HSU VASCULAR PLANT HERBARIUM - Humboldt State University

HSU VASCULAR PLANT HERBARIUM 

MISCELLANEOUS PUBLICATION NO. 2 

A CHECKLIST OF THE FERNS, CONIFERS, 

& FLOWERING PLANTS OF 

NORTHWESTERN CALIFORNIA 

by 

James P. Smith & John O. Sawyer 

Department of Biological Sciences 

Humboldt State University 

Arcata, California 

24 th Edition • 18 November 2010

TABLE OF CONTENTS 

Introduction .................................................................................................. 1 

List I: Plants by Family and Scientific Name 

1.1: Pteridophytes ........................................................................... 3 

1.2: Conifers ................................................................................... 6 

1.3: Flowering Plants ....................................................................... 8 

List 2: Plant Families: Common to Scientific Names ................................ 119 

List 3: Plants: Common to Generic and Family Names ............................ 121 

List 4: Endemic Plants ........................................................................... 134 

List 5: Rare, Endangered, and Threatened Plants ................................... 139 

List 6: Weeds ......................................................................................... 149 

List 7: Synonymy and Transfers .............................................................. 153 

Selected References .................................................................................. 167

Botanical Coverage. Our goal is to provide you 

with a checklist of the native and naturalized vascular 

plants that occur in northwestern California. Escaped 

ornamentals and crops are included if they have 

become established and persist without our 

assistance. The primary arrangement of plants is by 

the traditional major groups: ferns, fern allies 

(horsetails, quillworts, clubmosses, and spikemosses), 

conifers, and flowering plants. Within each 

group, the families, genera, species, subspecies, and 

varieties are arranged alphabetically. Cultivars 

(cultivated varieties) and forms are not included. 

This list is based primarily on specimens deposited in 

the Humboldt State University Herbarium (HSC) and 

those found at the University and the Jepson Herbaria 

of the University of California at Berkeley, and 

Herbarium of the California Academy of Sciences in 

San Francisco. It is also based on recent floras, 

monographs, and distribution information found in 

Munz (1959, 1968), Hickman (1993), Kartesz & 

Meacham (1999), and the Flora North America. The 

HSU Herbarium contains voucher specimens for a 

number of taxa that are not found in the region 

according to these standard floras. 

While we have not provided complete synonymy, we 

have attempted to account for the names used by 

Philip Munz in his A California Flora and Supplement, 

those in the Jepson Manual of Higher Plants, in the 

Flora North America, and those appearing in recent 

monographs and revisions. Names that we accept 

appear in bold type and include authors’ names. 

Geographic Coverage. By northwestern California, 

we mean the area bounded on the west by the Pacific 

Ocean, on the north by the Oregon border, on the 

east by a line that more or less follows Interstate 5, 

and on the south by the Mendocino-Sonoma county 

line, then east through Lake Co. to the Central Valley. 

The region includes all of Del Norte, Humboldt, 

Mendocino, and Trinity counties; central and western 

Siskiyou; western Shasta and Tehama counties; much 

of Lake Co., and the Coast Ranges of Glenn and 

Colusa counties. 

If we use the hierarchical geographic subdivisions that 

appear in the Jepson Manual (Hickman 1993), our 

area is called Northwestern California (NW), a portion 

of the much larger California Floristic Province (CA- 

FP). It is subdivided into the North Coast (NC), the 

Klamath Ranges (KR), and the North Coast Ranges 

(NCoR), which are further differentiated into the 

Outer (NCoRO), High (NCoRH), and Inner (NcoRI). 

Endemism. Our region is rich in plants of restricted 

distribution. Some are known from only a few 

I N T R O D U C T I O N 

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individuals at a single location. Others are found in 

only a few counties in northwestern California and in 

southwestern Oregon. See Smith & Sawyer (1988) 

and Sawyer (2006) for a discussion of the causes of 

endemism and its extent in our region. Plants that 

areendemic to this region constitute List 4. 

Rare, Endangered, and Threatened Plants. 

Northwestern California is also the home of almost 

450 vascular plants that have been recognized as 

rare, endangered, or threatened as determined by 

criteria developed by the California Native Plant 

Society, the California Department of Fish & Game, or 

the United States Fish & Wildlife Service. They appear 

as List 5. 

Weeds. A new feature of this edition is a list of what 

we consider the significant weedy plants of the 

region. It should be viewed as a first attempt. It 

includes both widespread taxa and those with more 

restricted ranges. Ralph Waldo Emerson suggested 

that weeds are plants whose virtues we have yet to 

discover. We are using criteria developed by the 

California Department of Food and Agriculture, the 

United States Department of Agriculture, and the 

California Invasive Plant Council. 

Family Names and Concepts. We follow the 

International Code of Botanical Nomenclature in using 

the family names Compositae, Cruciferae, Gramineae, 

Guttiferae, Labiatae, Leguminosae, and Umbelliferae, 

rather than the alternatives permitted by the Code. 

In most instances, there is little controversy regarding 

the placement of taxa in families. In some cases, the 

family concepts remain controversial, with significant 

differences existing among leading experts. Our roster 

of families is more closely aligned with those of 

Robert Thorne (2000), the Angiosperm Phylogeny 

Group (2009), and Takhtajan (2009) than they are 

with the circumscriptions found in Hickman (1993). 

The first section of List 7 is an accounting of changes 

in family definitions. Two of them are especially 

noteworthy. Recent studies have called into question 

the limits of Scrophulariaceae as they have been 

traditionally defined. The Angiosperm Phylogeny 

Group has proposed the transfer of hemi- and 

holoparasitic taxa to Orobanchaceae, Mimulus to 

Phrymaceae, and many other well known members of 

the family to Plantaginaceae. We have elected to 

follow Takhtajan (2010) in retaining a very broad, 

traditional circumscription of the scroph family. 

Even more perplexing is how to deal with Liliaceae. 

There is general agreement that the traditional family 

concept is unacceptable. We have followed Arthur 

Cronquist (1993), who said that he “... would be

happy to divide this group into several families, if I 

could find a reasonable way to do it, but I have not 

found the way.”More recent molecular data have 

provided some clarification and have resulted in a 

series of proposed new treatments of the lily family. 

from various standard floras and manuals (Abrams, 

1923-1951; Jepson 1925; Jepson, 1909-1923; Munz, 

1959; Munz, 1968; Peck, 1961; Hickman, 1993; 

CNPS, 2001, and the U. S. D. A. Plants Database). 

Many of the common names were contrived by 

translating the Greek or Latin roots into English. 

Lupinus densiflorus becomes the dense-flowered 

lupine; Phacelia ramosissima is the branching 

phacelia. Hundreds of such common names exist only 

in botanical texts and are not widely recognized, nor 

used by the general public. Others, such as redwood, 

tiger lily, rhododendron, and larkspur, enjoy wide 

usage. We have added a few common names that are 

used in this region. 

There is no official list of approved common names 

that can provide us with rules on their construction. Is 

it needleandthreadgrass or needle and thread grass 

or needle-and-thread-grass? Is it Pampas Grass or 

pampas grass? Sanford arrowhead or Sanford’s 

arrowhead? Marihuana or marijuana? You will detect 

NUMERICAL SUMMARY OF TAXA 

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Further explanation is provided at the beginning of 

the family entry. 

Common Names of Plants. Almost all of the 

common names appearing in this checklist are derived 

many inconsistencies among our standard references. 

Acknowledgments. It is a pleasure to acknowledge 

the contributions to this and previous editions made 

by John Bair (Salix), John Miller (Montia and 

Claytonia), John Sievert, who kindly shared new 

information regarding weedy taxa in our region; 

Margriet Wetherwax (Scrophulariaceae, in the 

traditional sense), and Gordon Leppig, former HSU 

Herbarium Botanist. 

We thank Veva Stansell, the late Vernon Oswald, and 

the late Scott Sundberg of the Oregon Flora Project 

for their assistance in the compilation of plants 

endemic to the region. 

Robin Bencie, Collections Manager, has been 

especially helpful in noting recent annotations and the 

addition of specimens to the Humboldt State 

University Herbarium. 

Families Genera Species Taxa 

Pteridophytes 14 27 75 76 

Gymnosperms 3 14 41 46 

Flowering Plants 134 871 3151 3582 

Totals 151 912 3267 3704 

LIST 1.1 • FERNS AND FERN ALLIES 

ASPLENIACEAE • Spleenwort Family 

Asplenium trichomanes Linnaeus ssp. trichomanes 

Maidenhair spleenwort. Native perennial. CNPS List 2.3 

AZOLLACEAE • Mosquito Fern Family 

Azolla filiculoides Lamarck 

Mosquito fern, duckweed fern. Native annual. 

Azolla mexicana Presl 

Mexican mosquito fern. Native annual. CNPS List 4.2 

BLECHNACEAE • Deer Fern Family 

Blechnum spicant (Linnaeus) J. E. Smith 

Deer fern, hard fern. Native perennial. 

Woodwardia fimbriata J. E. Smith

Western chain fern. Native perennial. 

DENNSTAEDTIACEAE • Bracken Fern Family 

Pteridium aquilinum (Linnaeus) Kuhn in von der Decken var. pubescens Underwood 

Bracken fern, brake fern. Native perennial. 

DRYOPTERIDACEAE • Holly Fern or Sword Fern Family 

Athyrium distentifolium Tausch ex Opiz 

Lady fern. Native perennial. 

Athyrium filix-femina (Linnaeus) Roth ssp. cyclosorum (Ruprecht) Christ 

Lady fern. Native perennial. 

Cystopteris fragilis (Linnaeus) Bernhardi 

Brittle fern, fragile fern. Native perennial. 

Dryopteris arguta (Kaulfuss) Maxon 

Western shield fern, coastal wood fern. Native perennial. 

Dryopteris expansa (Presl) Fraser-Jenkins & Jermy 

Spreading wood fern. Native perennial. 

Polystichum x californicum (D. C. Eaton) Diels [P. dudleyi x P. munitum or P. imbricans] 

California holly fern. Native perennial. 

Polystichum dudleyi Maxon 

Dudley's holly fern. Native perennial. 

Polystichum imbricans (D. C. Eaton) D. H. Wagner ssp. imbricans 

Narrow-leaved sword fern. Native perennial. 

Polystichum x kruckebergii Wagner [P. lemmonii x P. lonchitis] 

Kruckeberg's sword fern. Native perennial. CNPS List 4.3 

Polystichum lemmonii Underwood 

Shasta holly fern. Native perennial. 

Polystichum lonchitis (Linnaeus) Roth 

Northern holly fern. Native perennial. CNPS List 3 

Polystichum munitum (Kaulfuss) Presl 

Western sword fern. Native perennial. 

Polystichum x scopulinum (D. C. Eaton) Maxon [P. imbricans x P. lemmonii] 

Western sword fern, bristle fern, holly fern. Native perennial. 

Woodsia oregana D. C. Eaton ssp. oregana 

Oregon woodsia. Native perennial. 

Woodsia scopulina D. C. Eaton 

Rocky Mountain woodsia. Native perennial. 

EQUISETACEAE • Horsetail or Scouring-Rush Family 

Equisetum arvense Linnaeus 

Field horsetail. Native perennial. 

Equisetum x ferrisii Clute [E. hyemale x E. laevigatum] 

Hybrid horsetail. Native perennial. 

Equisetum hyemale Linnaeus ssp. affine (Engelmann) Calder & Taylor 

Tall scouring-rush. Native perennial. 

Equisetum laevigatum A. Braun 

Smooth scouring-rush. Native perennial. 

Equisetum palustre Linnaeus 

Marsh horsetail. Native perennial. CNPS List 3 

Equisetum telmateia Ehrhart ssp. braunii (Milde) Hauke 

Giant horsetail. Native perennial. 

ISOËTACEAE • Quillwort Family 

Isoëtes bolanderi Engelmann 

Bolander's quillwort. Native perennial. 

Isoëtes echinospora Durand 

Spiny-spored quillwort. Native perennial. 

Isoëtes howellii Engelmann 

Howell's quillwort, merlin-grass. Native perennial. 

Isoëtes nuttallii A. Braun ex Engelmann 

Nuttall's quillwort. Native perennial. 

Isoëtes occidentalis Henderson 

Western quillwort. Native perennial. 

Isoëtes tenella Léman 

Spiny-spore quillwort. Native perennial. 

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LYCOPODIACEAE • Clubmoss Family 

Lycopodiella inundata (Linnaeus) Holub 

Bog moss, bog clubmoss. Native perennial. CNPS List 2.2 

Lycopodium clavatum Linnaeus 

Ground-pine, running-pine. Native perennial. CNPS List 2.3 

MARSILEACEAE • Water-clover Fern Family 

Marsilea oligospora Goodding 

Water-clover. Native perennial. 

Marsilea vestita Hooker & Greville ssp. vestita 

Water-clover. Native perennial. 

Pilularia americana A. Braun 

American pillwort. Native perennial. 

OPHIOGLOSSACEAE • Moonwort Fern Family 

Botrychium crenulatum W. H. Wagner 

Scalloped moonwort. Native perennial. 

Botrychium lunaria (Linnaeus) Swartz 

Moonwort. Native perennial. 

Botrychium multifidum (Gmelin) Ruprecht 

Leathery grape fern. Native perennial. 

Botrychium pinnatum St. John 

Northwestern moonwort. Native perennial. CNPS List 2.3 

Botrychium pumicola Coville in Underwood 

Pumice moonwort. Native perennial. Historic collection (1941). Presumed extirpated. 

Botrychium simplex E. Hitchcock 

Least moonwort. Native perennial. 

Botrychium virginianum (Linnaeus) Swartz 

Rattlesnake fern. Native perennial. 

Ophioglossum pusillum Rafinesque 

Northern adder's tongue fern. Native perennial. 

POLYPODIACEAE • Polypody Fern Family 

Polypodium californicum Kaulfuss 

California polypody. Native perennial. 

Polypodium calirhiza S. Whitmore & A. R. Smith 

Nested polypody. Native perennial. 

Polypodium glycyrrhiza D. C. Eaton 

Licorice fern. Native perennial. 

Polypodium hesperium Maxon 

Western polypody. Native perennial. 

Polypodium scouleri Hooker & Greville 

Leathery polypody, coast polypody, leatherleaf fern. Native perennial. 

PTERIDACEAE • Cliff Brake Fern Family 

Adiantum aleuticum (Ruprecht) C. A. Paris 

Five-finger fern, western maidenhair. Native perennial. 

Adiantum capillus-veneris Linnaeus 

Southern maidenhair. Native perennial. 

Adiantum jordanii C. Mueller 

California maidenhair. Native perennial. 

Adiantum x tracyi C. C. Hall ex W. H. Wagner [A. jordanii x A. aleuticum] 

Tracy's maidenhair. Native perennial. 

Aspidotis californica (Hooker) Nuttall ex Copeland 

California lace fern. Native perennial. 

Aspidotis densa (Brackenridge in Wilkes) Lellinger 

Indian's dream. Native perennial. 

Cheilanthes cooperae D. C. Eaton 

Mrs. Cooper's lip fern. Native perennial. 

Cheilanthes covillei Maxon 

Coville's lip fern. Native perennial. 

Cheilanthes gracillima D. C. Eaton in Abrams 

Lace fern. Native perennial. 

Cheilanthes intertexta (Maxon) Maxon 

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Coastal lip fern. Native perennial. 

Cryptogramma acrostichoides R. Brown in Richardson 

Parsley fern, American rock-brake. Native perennial. 

Cryptogramma cascadensis Alverson 

Cascade rock-brake. Native perennial. 

Pellaea andromedifolia (Kaulfuss) Fée 

Coffee fern. Native perennial. 

Pellaea brachyptera (T. Moore) Baker 

Sierra cliff brake. Native perennial. 

Pellaea breweri D. C. Eaton 

Brewer's cliff brake. Native perennial. 

Pellaea mucronata (D. C. Eaton) D. C. Eaton ssp. mucronata 

Bird's-foot fern. Native perennial. 

Pentagramma triangularis (Kaulfuss) Yatskievych, Windham, & Wollenweber ssp. triangularis 

Goldback fern. Native perennial. 

SELAGINELLACEAE • Spikemoss Family 

Selaginella bigelovii Underwood 

Bigelow’s spikemoss, bushy spikemoss. Native perennial. 

Selaginella kraussiana (Kuntze) A. Braun 

Krauss’ spikemoss. Native perennial. 

Selaginella oregana D. C. Eaton in Watson 

Oregon spikemoss. Native perennial. 

Selaginella scopulorum Maxon 

Dense spikemoss. Native perennial. CNPS List 3 

Selaginella wallacei Hieronymous 

Wallace's spikemoss. Native perennial. 

Selaginella watsonii Underwood 

Alpine spikemoss. Native perennial. 

THELYPTERIDACEAE • Wood Fern Family 

Thelypteris nevadensis (Baker) Clute ex Morton 

Nevada wood fern. Native perennial. 

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L I S T 1. 2 • C O N I F E R S 

CUPRESSACEAE • Cedar or Cypress Family 

Callitropsis nootkatensis (D. Don in Lambert) D. P. Little 

Alaska-cedar, Alaska yellow-cedar. Native tree. CNPS List 4.3 

Calocedrus decurrens (Torrey) Florin 

Incense-cedar. Native tree. 

Chamaecyparis lawsoniana (A. Murray bis) Parlatore 

Port Orford-cedar, Lawson-cypress. Native tree. 

Cupressus bakeri Jepson 

Modoc cypress, Baker cypress. Native tree. CNPS List 4.2 

Cupressus macnabiana A. Murray bis 

McNab cypress. Native tree. 

Cupressus macrocarpa Hartweg ex Gordon 

Monterey cypress. Non-native tree. 

Cupressus pygmaea Lemmon 

Pygmy cypress. Native tree. CNPS List 1B.2 

Cupressus sargentii Jepson 

Sargent cypress. Native tree. 

Juniperus californica Carrière 

California juniper. Native tree. 

Juniperus communis Linnaeus var. jackii Rehder 

Common juniper, running juniper. Native shrub-tree. 

Juniperus occidentalis Hooker 

Western juniper. Native tree. 

Sequoia sempervirens (Lambert ex D. Don) Endlicher 

Redwood, coast redwood. Native tree. 

Sequoiadendron giganteum (Lindley) Buchholz 

Giant sequoia, Sierra redwood, big tree. Non-native tree. 

Thuja plicata Donn ex D. Don in Lambert 

Western red-cedar, red-cedar, canoe-cedar. Native tree. 

PINACEAE • Pine Family 

Abies amabilis (Douglas ex Loudon) Douglas ex Forbes 

Pacific silver fir. Native tree. CNPS List 2.3 

Abies concolor (Gordon & Glendinning) Lindley ex Hildebrand var. lowiana (Gordon & Glendinning) Lemmon 

California white fir. Native tree. 

Abies grandis (Douglas) Lindley 

Grand fir. Native tree. 

Abies lasiocarpa (Hooker) Nuttall var. lasiocarpa 

Subalpine fir. Native tree. CNPS List 2.3 

Abies magnifica A. Murray 

Red fir, California red fir. Native tree. 

Abies procera Rehder 

Noble fir. Native tree. 

Abies x shastensis (Lemmon) Lemmon [Abies magnifica x A. procera] 

Shasta fir, Shasta red fir. Native tree. 

Picea breweriana Watson 

Brewer spruce, weeping spruce. Native tree. 

Picea engelmannii Parry ex Engelmann var. engelmannii 

Engelmann spruce. Native tree. CNPS List 2.2 

Picea sitchensis (Bongard) Carrière 

Sitka spruce, tideland spruce. Native tree. 

Pinus albicaulis Engelmann 

Whitebark pine. Native tree. 

Pinus attenuata Lemmon 

Knobcone pine. Native tree. 

Pinus balfouriana Greville & Balfour in A. Murray ssp. balfouriana 

Foxtail pine. Native tree. 

Pinus contorta Douglas ex Loudon ssp. bolanderi (Parlatore) Critchfield 

Bolander pine. Native tree. CNPS List 1B.2 

Pinus contorta Douglas ex Loudon ssp. contorta 

Shore pine, beach pine. Native tree. 

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Pinus contorta Douglas ex Loudon ssp. murrayana (Greville & Balfour) Critchfield 

Lodgepole pine, tamarack pine. Native tree. 

Pinus coulteri D. Don 

Coulter pine. Non-native tree. 

Pinus jeffreyi Greville & Balfour in A. Murray 

Jeffrey pine. Native tree. 

Pinus lambertiana Douglas 

Sugar pine. Native tree. 

Pinus monticola Douglas 

Western white pine, silver pine. Native tree. 

Pinus muricata D. Don 

Bishop pine. Native tree. 

Pinus ponderosa Douglas ex P. & C. Lawson var. ponderosa 

Ponderosa pine, yellow pine. Native tree. 

Pinus radiata D. Don 

Monterey pine. Non-native tree. Hybridizes with knobcone pine to form P. x attenuiradiata Stockwell & Righter. 

Pinus sabineana Douglas 

Ghost pine, foothill pine, gray pine, digger pine (commonly used, but offensive name). Native tree. 

Pseudotsuga menziesii (Mirbel) Franco var. menziesii 

Douglas-fir, coast Douglas-fir. Native tree. 

Tsuga heterophylla (Rafinesque-Schmaltz) Sargent 

Western hemlock, coast hemlock. Native tree. 

Tsuga mertensiana (Bongard) Carrière 

Mountain hemlock, subalpine hemlock. Native tree. 

TAXACEAE • Yew Family 

Taxus baccata Linnaeus 

Yew, English yew. Non-native shrub/tree. 

Taxus brevifolia Nuttall var. brevifolia 

Pacific yew. Native shrub-tree. 

Taxus brevifolia Nuttall var. polychaeta Spjut 

Worm-cone yew. Native shrub-tree. 

Taxus brevifolia Nuttall var. reptaneta Spjut 

Thicket yew. Native shrub-tree. 

Torreya californica Torrey 

California-nutmeg, California torreya. Native shrub-tree. 

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L I S T 1.3 • F L O W E R I N G P L A N T S 

ACERACEAE • Maple Family 

Acer circinatum Pursh 

Vine maple. Native shrub-tree. 

Acer glabrum Torrey var. torreyi (Greene) Smiley 

Mountain maple. Native shrub-tree. 

Acer macrophyllum Pursh 

Bigleaf maple, canyon maple, Oregon maple. Native tree. 

Acer negundo Linnaeus var. californicum (Torrey & Gray) Sargent 

California box elder, ash-leaved maple. Native tree. 

ACORACEAE • Sweet Flag Family 

Acorus calamus Linnaeus 

Sweet flag. Non-native perennial. Historic collection; doubtfully persisting. 

AIZOACEAE • Ice Plant Family 

Aptenia cordifolia (Linnaeus f.) Schwantes 

Baby sun-rose. Non-native perennial. 

Carpobrotus chilensis (Molina) N. E. Brown 

Sea-fig. Non-native perennial. Non-native shrub. 

Carpobrotus edulis (Linnaeus) N. E. Brown 

Hottentot-fig. Non-native shrub. 

Cypselea humifusa Turpin 

Panal. Non-native annual. 

Drosanthemum floribundum (Haworth) Schwantes 

Rosea ice plant. Non-native shrub. 

Lampranthus coccineus (Haworth) N. E. Brown 

Red flush. Non-native shrub. Doubtfully persisting. 

Lampranthus multiradiatus (von Jacquin) N. E. Britton 

Creeping red flush. Non-native perennial. Doubtfully persisting. 

Mesembryanthemum crystallinum Linnaeus 

Crystalline ice plant. Non-native annual-perennial. 

Tetragonia tetragonioides (Pallas) Kuntze 

New Zealand-spinach, sea-spinach. Non-native annual. 

ALISMATACEAE • Arrowhead or Water-Plantain Family 

Alisma gramineum Gmelin 

Narrow-leaved water-plantain. Native perennial. CNPS List 2.2 

Alisma lanceolatum Withering 

Lance-leaved water-plantain. Non-native perennial. 

Alisma subcordatum Rafinesque 

Southern water-plantain. Non-native perennial. 

Alisma triviale Pursh 

Common water-plantain. Native perennial. 

Damasonium californicum Torrey ex Bentham 

Fringed water-plantain, star water-plantain. Native perennial. 

Echinodorus berteroi (Sprengel) Fassett 

Upright burhead. Native annual. 

Echinodorus cordifolius (Linnaeus) Grisebach 

Texas mud baby, creeping burhead. Non-native perennial. 

Sagittaria cuneata Sheldon 

Arum-leaved arrowhead. Native perennial. 

Sagittaria latifolia von Willdenow var. latifolia 

Wappato, tule-potato, common arrowhead. Native perennial. 

Sagittaria rigida Pursh 

Sessile-fruited arrowhead. Native perennial. 

Sagittaria sanfordii Greene 

Sanford's arrowhead. Native perennial. CNPS List 1B.2 

AMARANTHACEAE • Pigweed Family 

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Amaranthus albus Linnaeus 

Pigweed, tumbleweed. Non-native annual. 

Amaranthus blitoides Watson 

Prostrate pigweed. Native perennial. 

Amaranthus californicus (Moquin-Tandon) Watson 

California pigweed. Native annual. 

Amaranthus hybridus Linnaeus 

Green pigweed, green amaranth, spleen amaranth. Non-native annual. 

Amaranthus powellii Watson 

Powell's pigweed. Native annual. 

Amaranthus retroflexus Linnaeus 

Rough pigweed. Non-native annual. 

ANACARDIACEAE • Cashew, Poison-Oak, or Sumac Family 

Rhus aromatica Aiton var. trilobata (Nuttall) Gray ex Watson 

Skunkbush sumac. Native shrub. 

Rhus ovata Watson 

Sugar bush, sugar sumac. Non-native shrub. 

Toxicodendron diversilobum (Torrey & Gray) Greene 

Poison-oak, Pacific poison-oak. Native shrub-vine. 

APOCYNACEAE • Dogbane Family 

Apocynum androsaemifolium Linnaeus 

Mountain-hemp, spreading dogbane, bitter dogbane. Native perennial. 

Apocynum cannabinum Linnaeus 

Indian-hemp. Native perennial. 

Asclepias californica Greene ssp. greenei Woodson 

Greene's milkweed. Native perennial. 

Asclepias cordifolia (Bentham) Jepson 

Purple milkweed. Native perennial. 

Asclepias eriocarpa Bentham 

Indian milkweed, kotolo. Native perennial. 

Asclepias fascicularis Decaisne 

Mexican whorled milkweed. Native perennial. 

Asclepias solanoana Woodson 

Prostrate milkweed. Native perennial. CNPS List 4.2 

Asclepias speciosa Torrey 

Showy milkweed, creek milkweed. Native perennial. 

Cycladenia humilis Bentham var. humilis 

Waxy-dogbane. Native perennial. 

Nerium oleander Linnaeus 

Oleander. Non-native shrub. Persisting? 

Vinca major Linnaeus 

Periwinkle. Non-native vine-shrub. 

APONOGETONACEAE • Pondweed Family 

Aponogeton distachyus Linnaeus f. 

Cape pondweed, water-hawthorn. Non-native perennial. 

AQUIFOLIACEAE • Holly Family 

Ilex aquifolium Linnaeus 

English holly. Non-native tree. Escaped ornamental. 

ARACEAE • Philodendron or Aroid Family 

Arum italicum Miller 

Italian arum. Non-native perennial. 

Arum palaestinum Boisser 

Solomon’s-lily. Non-native perennial. 

Dracunculus vulgaris Schott 

Dragon-arum. Non-native perennial. 

Lysichiton americanum Hultén & St. John 

Yellow skunk-cabbage. Native perennial. 

Zantedeschia aethiopica (Linnaeus) Sprengel 

Calla-lily. Non-native perennial. Escaped ornamental. 

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ARALIACEAE • Aralia or Ginseng Family 

Aralia californica Watson 

Elk-clover, spikenard, spig nut. Native shrub. 

Hedera helix Linnaeus 

English ivy. Non-native vine. Escaped ornamental. 

ARISTOLOCHIACEAE • Birthwort Family 

Aristolochia californica Torrey 

Pipe vine, Dutchman's pipe, birthwort, California snakeroot. Native vine. 

Asarum caudatum Lindley 

Wild-ginger, long-tailed-ginger. Native perennial. 

Asarum hartwegii Watson 

Hartweg's wild-ginger. Native perennial. 

Asarum marmoratum Piper 

Marbled wild-ginger. Native perennial. CNPS List 2.3 

BALSAMINACEAE • Jewel Weed or Touch-Me-Not Family 

Impatiens balfourii Hooker f. 

Balfour's snapweed. Non-native annual. Escaped ornamental. 

Impatiens glandulifera Royle 

Glandular snapweed. Non-native annual. Escaped ornamental. 

Impatiens nolitangere Linnaeus 

Western jewel weed. Non-native annual. Escaped ornamental. 

BERBERIDACEAE • Barberry Family 

Achlys californica Fukuda & Baker 

Vanilla leaf, deer foot. Native perennial. 

Achlys triphylla (J. E. Smith) de Candolle 

Vanilla leaf, deer foot. Native perennial. 

Berberis darwinii Hooker 

Darwin’s barberry. Non-native shrub. Escaped ornamental. 

Mahonia aquifolium (Pursh) Nuttall 

Oregon-grape, holly-leaved mahonia, mountain-grape. Native shrub. 

Mahonia dictyota (Jepson) Fedde 

Jepson's mahonia, California barberry. Native shrub. 

Mahonia nervosa (Pursh) Nuttall var. mendocinensis (J. B. Roof) J. B. Roof 

Hardy Creek barberry. Endemic shrub. 

Mahonia nervosa (Pursh) Nuttall var. nervosa 

Oregon-grape, little Oregon-grape, long-leaved Oregon-grape, longleaf mahonia. Native shrub. 

Mahonia pinnata (Lagasca) Fedde ssp. pinnata 

California mahonia, California barberry, shiny mahonia. Native shrub. 

Mahonia piperiana Abrams 

Piper’s barberry. Native shrub. 

Mahonia pumila (Greene) Fedde 

Dwarf mahonia, dwarf barberry. Native shrub. 

Mahonia repens (Lindley) G. Don 

Creeping mahonia, creeping barberry. Native shrub. 

Vancouveria chrysantha Greene 

Siskiyou inside-out flower, yellow inside-out flower. Endemic perennial. CNPS List 4.3 

Vancouveria hexandra (Hooker) Morren & Decaisne 

Northern vancouveria. Native perennial. 

Vancouveria planipetala Calloni 

Inside-out flower, redwood-ivy. Native perennial. 

BETULACEAE • Alder or Birch Family 

Alnus incana (Linnaeus) Moench ssp. tenuifolia (Nuttall) Breitung 

Mountain alder. Native shrub. 

Alnus rhombifolia Nuttall 

White alder, California alder. Native tree. 

Alnus rubra Bongard 

Red alder, Oregon alder. Native tree. 

Alnus viridis (Chaix) de Candolle in Lamarck & A. P. de Candolle ssp. fruticosa (Ruprecht) Nyman 

Siberian alder. Native shrub. 

Alnus viridis (Chaix) de Candolle in Lamarck & A. P. de Candolle ssp. sinuata (Regel) Á. Löve & D. Löve 

-10-

Sitka alder, tag alder, thin-leaved alder. Native shrub. 

Betula occidentalis Hooker 

Water birch, western birch. Native shrub-tree. 

Corylus cornuta Marshall ssp. californica (A. de Candolle) E. Murray 

California hazel, hazelnut, filbert. Native shrub-tree. 

BIGNONIACEAE • Bignonia Family 

Catalpa bignonioides Walter 

Catalpa, Indian bean. Non-native tree. Sparingly escaped ornamental. 

BORAGINACEAE • Borage Family 

Amsinckia eastwoodiae Macbride 

Eastwood's fiddleneck. Native annual. 

Amsinckia intermedia Fischer & Meyer 

Common fiddleneck, rancher's fireweed. Native annual. 

Amsinckia lunaris Macbride 

Bent-flowered fiddleneck. Native annual. CNPS List 1B.2 

Amsinckia lycopsoides Lehman 

Bugloss fiddleneck. Native annual. 

Amsinckia menziesii (Lehman) Nelson & Macbride 

Menzies' fiddleneck. Native annual. 

Amsinckia retrorsa Suksdorf 

Harvest fireweed. Native annual. 

Amsinckia spectabilis Fischer & Meyer 

Seaside alkanet. Native annual. 

Amsinckia tessellata Gray var. gloriosa (Eastwood ex Suksdorf) Hoover 

Devil’s-lettuce. Native annual. 

Anchusa officinalis Linnaeus 

Alkanet, bugloss. Non-native annual. 

Borago officinalis Linnaeus 

Common borage. Non-native annual. 

Cryptantha affinis (Gray) Greene 

Common cryptantha. Native annual. 

Cryptantha ambigua (Gray) Greene 

Wilke's cryptantha. Native annual. 

Cryptantha clevelandii Greene var. dissita (Johnston) Jepson & Hoover 

Cleveland's cryptantha. Native annual. CNPS List 1B.1 

Cryptantha crinita Greene 

Sacramento cryptantha. Native annual. CNPS List 1B.2 

Cryptantha excavata Brandegee 

Deep-scarred cryptantha. Native annual. CNPS List 4.3 

Cryptantha flaccida (Douglas ex Lehman) Greene 

Flaccid cryptantha. Native annual. 

Cryptantha hispidula Greene ex Brand 

Napa cryptantha. Native annual. 

Cryptantha intermedia (Gray) Greene 

Clearwater cryptantha. Native annual. 

Cryptantha leiocarpa (Fischer & Meyer) Greene 

Coast cryptantha. Native annual. 

Cryptantha microstachys (Greene ex Gray) Greene 

Tejon cryptantha. Native annual. 

Cryptantha milobakeri Johnston 

Milo Baker's cryptantha. Native annual. 

Cryptantha muricata (Hooker & Arnott) Nelson & Macbride var. jonesii (Gray) Johnston 

Prickly cryptantha. Native annual. 

Cryptantha nemaclada Greene 

Colusa cryptantha. Native annual. 

Cryptantha rostellata (Greene) Greene var. rostellata 

Beaked cryptantha. Native annual. 

Cryptantha simulans Greene 

Pine cryptanthana. Native annual. 

Cryptantha sobolifera Payson 

Waterton Lakes cryptantha. Native perennial. 

Cryptantha torreyana (Gray) Greene 

Torrey's cryptantha, Torrey’s cat’s-eye. Native annual. 

Cynoglossum grande Douglas ex Lehman 

-11-

Hound's-tongue. Native perennial. 

Cynoglossum occidentale Gray 

Western hound's-tongue. Native perennial. 

Cynoglossum officinale Linnaeus 

Hound's tongue. Non-native perennial. 

Echium lusitanicum Linnaeus 

Violet-veined viper’s-bugloss. Non-native shrub. Escaped ornamental. 

Echium vulgare Linnaeus 

Blue weed, common viper’s-bugloss. Non-native shrub. Escaped ornamental. 

Emmenanthe penduliflora Bentham var. penduliflora 

Whispering bells. Native annual. 

Hackelia amethystina J. T. Howell in Eastwood 

Amethyst stickseed, Howell's stickseed. Native perennial. CNPS List 4.3 

Hackelia bella (Macbride) Johnston 

Showy stickseed. Endemic perennial. 

Hackelia californica (Gray) Johnston 

California stickseed. Native perennial. 

Hackelia cusickii (Piper) Brand 

Cusick’s stickseed. Native perennial. CNPS List 4.3 

Hackelia micrantha (Eastwood) J. L. Gentry 

Jessica's stickseed. Native perennial. 

Hackelia mundula (Jepson) Ferris 

Pink stickseed. Native perennial. 

Hackelia setosa (Piper) Johnston 

Bristly stickseed. Native perennial. 

Heliotropium curassavicum Linnaeus var. oculatum (Heller) Johnston 

Seaside heliotrope, quail plant. Native perennial. 

Lithospermum californicum Gray 

California gromwell, Shasta puccoon. Native perennial. 

Mertensia bella Piper 

Oregon lungwort. Native perennial. CNPS List 2.2 

Mertensia oblongifolia (Nuttall) G. Don var. amoena (A. Nelson) L. O. Williams 

Lungwort. Native perennial. 

Myosotis discolor Persoon 

Yellow-and-blue scorpion-grass, English scorpion-grass. Non-native annual-perennial. 

Myosotis latifolia Poiret 

Wood forget-me-not. Non-native perennial. 

Myosotis laxa Lehman 

Smaller forget-me-not. Native annual-perennial. 

Myosotis scorpioides Linnaeus 

Forget-me-not. Non-native perennial. 

Myosotis stricta Link ex Roemer & Schultes 

Forget-me-not. Non-native annual. 

Myosotis verna Nuttall 

Spring scorpion-grass. Native annual-perennial. 

Pectocarya penicillata (Hooker & Arnott) A. de Candolle 

Winged pectocarya. Native annual. 

Pectocarya pusilla (A. de Candolle) Gray 

Little pectocarya. Native annual. 

Plagiobothrys bracteatus (T. J. Howell) Johnston var. bracteatus 

Bracted popcorn flower. Native annual. 

Plagiobothrys collinus (Philbrick) Johnston var. californicus (Gray) Higgins 

Cooper’s popcorn flower. Native annual. 

Plagiobothrys fulvus (Hooker & Arnott) Johnston var. campestris (Greene) Johnston 

Fulvous popcorn flower. Native annual. 

Plagiobothrys glyptocarpus (Piper) Johnston var. glyptocarpus 

Sculptured allocarya. Native annual. 

Plagiobothrys greenei (Gray) Johnston 

Greene's allocarya. Native annual. 

Plagiobothrys lithocaryus (Greene ex Gray) Johnston 

Mayacamas popcorn flower. Endemic annual. CNPS List 1A 

Plagiobothrys nothofulvus (Gray) Gray 

Rusty popcorn flower, foothill snowdrops. Native perennial. 

Plagiobothrys reticulatus (Piper) Johnston var. reticulatus 

Netted popcorn flower. Native annual. 

Plagiobothrys reticulatus (Piper) Johnston var. rossianorum Johnston 

-12-

Netted popcorn flower. Native annual. 

Plagiobothrys scouleri (Hooker & Arnott) Johnston var. cusickii (Greene) Higgins 

Cusick’s popcorn flower. Native annual. 

Plagiobothrys scouleri (Hooker & Arnott) Johnston var. hispidulus (Greene) Dorn 

Meadow popcorn flower. Native annual. 

Plagiobothrys scouleri (Hooker & Arnott) Johnston var. scouleri 

Meadow popcorn flower. Native annual. 

Plagiobothrys shastensis Greene ex Gray 

Shasta popcorn flower. Native annual. 

Plagiobothrys stipitatus (Greene) Johnston var. micranthus (Piper) Johnston 

Popcorn flower. Native annual. 

Plagiobothrys stipitatus (Greene) Johnston var. stipitatus 

Stalked popcorn flower. Native annual. 

Plagiobothrys tenellus (Nuttall ex Hooker) Gray 

Slender popcorn flower. Native annual. 

Plagiobothrys tener (Greene) Johnston var. tener 

Slender allocarya. Native annual. 

Plagiobothrys tener (Greene) Johnston var. subglaber Johnston 

Slender allocarya. Endemic annual. 

Plagiobothrys undulatus (Piper) Johnston 

Popcorn flower. Native annual. 

Symphytum asperum Lepechin 

Comfrey. Non-native perennial. 

CACTACEAE • Cactus Family 

Opuntia fragilis (Nuttall) Haworth var. fragilis 

Pigmy tuna. Native shrub. CNPS List 2.1 

CALLITRICHACEAE • Water Starwort Family 

Callitriche heterophylla Pursh emend. Darby var. bolanderi (Hegelmaier) Fassett 

Bolander's starwort. Native annual. 

Callitriche marginata Torrey 

California water starwort, wallow starwort. Native annual. 

Callitriche palustris Linnaeus 

Starwort. Native perennial. 

Callitriche stagnalis Scopoli 

Pond starwort. Non-native annual. 

Callitriche trochlearis Fassett 

Effluent starwort. Native annual. 

CALYCANTHACEAE • Spice Bush Family 

Calycanthus occidentalis Hooker & Arnott 

California spice bush, sweet shrub, sweet bush. Native shrub. 

CAMPANULACEAE • Bellflower or Harebell Family 

Asyneuma prenanthoides (Durand) McVaugh 

California harebell. Native perennial. 

Campanula angustiflora Eastwood var. angustiflora 

Eastwood's harebell. Native annual. 

Campanula californica (Kellogg) Heller 

Swamp harebell. Native perennial. CNPS List 1B.2 

Campanula griffinii Morin 

Griffin's harebell. Native annual. 

Campanula rotundifolia Linnaeus 

Scotch harebell. Native perennial. 

Campanula scabrella Engelmann 

Rough harebell. Native perennial. CNPS List 4.3 

Campanula scouleri Hooker ex A. de Candolle 

Scouler's harebell. Native perennial. 

Campanula shetleri Heckard 

Castle Crags harebell. Endemic perennial. CNPS List 1B.3 

Campanula wilkinsiana Greene 

Wilkins’ harebell. Native perennial. CNPS List 1B.2 

Downingia bacigalupii Weiler 

Bacigalupi’s downingia. Native annual. 

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Downingia bicornuta Gray var. bicornuta 

Double-horned downingia, double-horned calico flower. Native annual. 

Downingia bicornuta Gray var. picta Hoover 

Double-horned downingia, double-horned calico flower. Native annual. 

Downingia concolor Greene var. concolor 

Maroon-spotted downingia, maroon-spotted calico flower. Native annual. 

Downingia cuspidata (Greene) Greene ex Jepson 

Cuspidate downingia, cuspidate calico flower. Native annual. 

Downingia elegans (Douglas ex Lindley) Torrey var. brachypetala (Gandoger) McVaugh 

Elegant downingia, elegant calico flower. Native annual. 

Downingia elegans (Douglas ex Lindley) Torrey var. elegans 

Common downingia, common calico flower. Native annual. 

Downingia insignis Greene 

Cupped downingia, cupped calico flower. Native annual. 

Downingia pusilla (Don) Torrey 

Dwarf downingia, dwarf calico flower. Native annual. 

Downingia yina Applegate 

Cascade downingia, Cascade calico flower. Native annual. 

ithopsis diffusa Gray ssp. robusta Morin 

Southern bluecups. Native annual. 

Githopsis pulchella Vatke ssp. campestris Morin 

Large-flowered bluecups. Native annual. 

Githopsis specularioides Nuttall ssp. specularioides 

Common bluecups. Native annual. 

Heterocodon rariflorum Nuttall 

Western pearl flower. Native annual. 

Howellia aquatilis Gray 

Water howellia. Native annual. CNPS List 2.2. Federal List: threatened 

Legenere limosa (Greene) McVaugh 

False Venus’ looking glass. Native annual. CNPS List 1B.1 

Nemacladus capillaris Greene 

Common nemacladus. Native annual. 

Nemacladus montanus Greene 

Mountain nemacladus. Native annual. 

Triodanis perfoliata (Linnaeus) Nieuwland var. biflora (Ruiz Lopez & Pavón) Bradley 

Venus' looking-glass. Native annual. 

Triodanis perfoliata (Linnaeus) Nieuwland var. perfoliata 

Venus' looking-glass. Native annual. 

CANNABACEAE • Hemp Family 

Cannabis sativa Linnaeus 

Marijuana, pot, grass, etc. Non-native annual. Escaped crop. 

Humulus lupulus Linnaeus var. lupulus 

Hops. Non-native annual-perennial. Escaped crop. 

CAPRIFOLIACEAE • Honeysuckle Family 

Lonicera ciliosa (Pursh) Poiret ex de Candolle 

Orange honeysuckle, Northwest honeysuckle. Native vine. 

Lonicera conjugialis Kellogg 

Double honeysuckle, purple-flowered honeysuckle. Native shrub. 

Lonicera etrusca Santi 

Etruscan honeysuckle. Non-native vine. 

Lonicera hispidula Douglas var. vacillans (Bentham) Gray 

Hairy honeysuckle, California honeysuckle. Native vine. 

Lonicera interrupta Bentham 

Chaparral honeysuckle. Native shrub. 

Lonicera involucrata (Richardson) Banks ex Sprengel var. involucrata 

Black twinberry, bearberry honeysuckle. Native shrub. 

Lonicera involucrata (Richardson) Banks ex Sprengel var. ledebourii (Eschscholtz) Zabel 

Twinberry. Native shrub. 

Lonicera tartarica Linnaeus 

Tatarian honeysuckle. Non-native shrub. 

Lonicera utahensis Watson 

Utah honeysuckle 

Sambucus nigra Linnaeus ssp. caerulea (Rafinesque-Schmaltz) R. Bolli 

Blue elderberry, blue elder. Native shrub. 

-14-

Sambucus racemosa Linnaeus var. melanocarpa 

Black elderberry. Native shrub. 

Sambucus racemosa Linnaeus var. racemosa 

Red elderberry, red elder. Native shrub. 

Symphoricarpos albus (Linnaeus) Blake var. laevigatus (Fernald) Blake 

Common snowberry. Native shrub. 

Symphoricarpos mollis Nuttall var. acutus Gray 

Spreading snowberry, creeping snowberry. Native shrub. 

Symphoricarpos mollis Nuttall var. hesperius (G. N. Jones) Cronquist 

Spreading snowberry. Native shrub. 

Symphoricarpos mollis Nuttall var. mollis 

Spreading snowberry, creeping snowberry. Native shrub. 

Symphoricarpos rotundifolius Gray var. rotundifolius 

Mountain snowberry. Native shrub. 

Viburnum ellipticum Hooker 

Western viburnum. Native shrub. CNPS List 2 

Viburnum tinus Linnaeus 

Laurustinus. Non-native shrub. 

CARYOPHYLLACEAE • Pink or Carnation Family 

Agrostemma githago Linnaeus var. githago 

Corn cockle. Non-native annual-perennial. 

Arenaria paludicola Robinson 

Sandwort. Native perennial. CNPS List 1B.1. Federal List: endangered. State List: endangered 

Arenaria serpyllifolia Linnaeus ssp. serpyllifolia 

Thyme-leaved sandwort. Non-native annual. 

Cardionema ramosissimum (Weinmann) Nelson & Macbride 

Sandmat. Native perennial. 

Cerastium arvense Linnaeus ssp. strictum (Linnaeus) Ugborogho 

Field chickweed, meadow chickweed. Non-native perennial. 

Cerastium dichotomum Linnaeus 

Chickweed. Non-native annual. 

Cerastium fontanum Baumgarten ssp. vulgare (Hartman) Greuter & Burdet 

Perennial mouse-ear chickweed. Non-native perennial. 

Cerastium glomeratum Thuillier 

Annual mouse-ear chickweed. Non-native annual. 

Cerastium viride Heller 

Western field mouse-ear chickweed. Native perennial. 

Dianthus armeria Linnaeus 

Deptford pink. Non-native annual. 

Dianthus barbatus Linnaeus ssp. barbatus 

Sweet William. Non-native perennial. 

Eremogone congesta (Nuttall ex Torrey & Gray) Ikonnikov var. congesta 

Capitate sandwort. Native perennial. 

Eremogone congesta (Nuttall ex Torrey & Gray) Ikonnikov var. crassula (Maguire) R. L. Hartman & Rabeler 

Sandwort. Native perennial. 

Eremogone congesta (Nuttall ex Torrey & Gray) Ikonnikov var. suffrutescens (Gray) R. L. Hartman & Rabeler 

Sandwort. Native perennial. 

Gypsophila paniculata Linnaeus var. paniculata 

Baby's breath. Non-native perennial. 

Herniaria hirsuta Linnaeus ssp. cinerea (de Candolle) Coutinho 

Hairy rupture wort. Non-native annual. 

Herniaria hirsuta Linnaeus ssp. hirsuta 

Hairy rupture wort. Non-native annual. 

Holosteum umbellatum Linnaeus 

Jagged chickweed. Non-native annual. 

Minuartia californica (Gray) Mattfeld 

California sandwort. Native annual. 

Minuartia cismontana Meinke & Zika 

Cismontane sandwort. Native annual-perennial. 

Minuartia decumbens T. W. Nelson & J. P. Nelson 

Lassics sandwort. Endemic perennial. CNPS List 1B.2 

Minuartia douglasii (Fenzl ex Torrey & Gray) Mattfeld var. douglasii 

Douglas' sandwort. Native annual. 

Minuartia howellii (Watson) Mattfeld 

Howell's sandwort. Endemic annual. CNPS List 1B.3 

-15-

Minuartia nuttallii (Pax) Briquet ssp. fragilis (Maguire & Holmgren) McNeill 

Nuttall’s sandwort. Native perennial. 

Minuartia nuttallii (Pax) Briquet ssp. gregaria (Heller) Maguire 

Nuttall’s sandwort. Native perennial. 

Minuartia pusilla (Watson) Mattfeld 

Dwarf sandwort. Native annual. 

Minuartia rosei (Maguire & Barneby) McNeill 

Peanut sandwort. Endemic perennial. CNPS List 4.2 

Minuartia rubella (Wahlenberg) Hieronymus 

Beautiful sandwort. Native perennial. 

Minuartia stolonifera T. W. Nelson & J. P. Nelson 

Nelsons' sandwort, Scott Mountain sandwort. Endemic annual. CNPS List 1B.3 

Moehringia macrophylla (Hooker) Fenzl 

Large-leaved sandwort. Native perennial. 

Petrorhagia dubia (Rafinesque) G. Lopéz & Romo 

Grass pink. Non-native annual. 

Petrorhagia prolifera (Gussone) Ball & Heywood 

Childing pink. Non-native annual. 

Polycarpon tetraphyllum (Linnaeus) Linnaeus ssp. tetraphyllum 

Four-leaved allseed. Non-native annual. 

Pseudostellaria jamesiana (Torrey) W. Weber & R. Hartman 

Sticky starwort. Native perennial. 

Sagina apetala Arduino 

Dwarf pearlwort, sticky pearlwort. Native annual. 

Sagina decumbens (Elliott) Torrey & Gray ssp. occidentalis (Watson) Crow 

Decumbent pearlwort. Native annual. 

Sagina maxima Gray ssp. crassicaulis (Watson) Crow 

Beach pearlwort. Native perennial. 

Sagina procumbens Linnaeus 

Procumbent pearlwort. Native perennial. 

Sagina saginoides (Linnaeus) Karsten 

Arctic pearlwort. Native perennial. 

Saponaria officinalis Linnaeus 

Bouncing bet, soapwort. Non-native perennial. 

Scleranthus annuus Linnaeus ssp. annuus 

Knawel, German knotgrass. Non-native annual. 

Silene antirrhina Linnaeus 

Sleepy catchfly. Native annual. 

Silene bernardina Watson 

Catchfly, campion. Native perennial. 

Silene bolanderi Gray 

Bolander’s campion. Endemic perennial. 

Silene bridgesii Rohrbach 

Bridges' campion. Native perennial. 

Silene campanulata Watson ssp. campanulata 

Red Mountain catchfly. Endemic perennial. CNPS List 4.2 

Silene campanulata Watson ssp. glandulosa C. L. Hitchcock & Maguire 

Red Mountain catchfly. Native perennial. 

Silene campanulata Watson ssp. greenei (Watson) C. L. Hitchcock & Maguire 

Red Mountain catchfly. Native perennial. 

Silene coronaria (Linnaeus) Clairville 

Mullein pink, rose campion. Non-native perennial. 

Silene douglasii Hooker var. douglasii 

Douglas' campion, seabluff campion. Native perennial. 

Silene gallica Linnaeus 

Windmill pink, common catchfly. Non-native annual. 

Silene grayi Watson 

Gray's campion. Native perennial. 

Silene hookeri Nuttall ex Torrey & Gray 

Oregon Indian pink, Hooker's Indian pink, string flower. Native perennial. 

Silene invisa C. L. Hitchcock & Maguire 

Short-petaled campion. Native perennial. 

Silene laciniata Cavanilles ssp. californica (Durand) J. K. Morton 

California Indian pink. Native perennial. 

Silene latifolia Poiret 

Bladder campion. Non-native perennial. 

-16-

Silene lemmonii Watson 

Lemmon's campion. Native perennial. 

Silene marmorensis Kruckeberg 

Marble Mtn. campion. Endemic perennial. CNPS List 1B.2 

Silene menziesii Hooker 

Menzies' campion. Native perennial. 

Silene salmonacea T. W. Nelson, J. P. Nelson, & S. A. Erwin 

Klamath Mountain catchfly. Endemic perennial. 

Silene scouleri Hooker ssp. grandis (Eastwood) C. L. Hitchcock & Maguire 

Simple catchfly. Native perennial. 

Silene scouleri Hooker ssp. scouleri 

Simple catchfly. Native perennial. 

Silene serpentinicola T. W. Nelson & J. P. Nelson 

Serpentine Indian pink. Endemic perennial. 

Silene verecunda Watson var. platyota (Watson) C. L. Hitchcock & Maguire 

Cuyamaca catchfly. Native perennial. 

Silene vulgaris (Moench) Garcke 

Bladder-campion, maiden’s tears. Non-native perennial. 

Spergula arvensis Linnaeus 

Corn spurrey, spurrey. Non-native annual. 

Spergularia bocconi (Scheele) Grabner in P. F. A. Ascherson et al. 

Boccone’s sand. Non-native annual. 

Spergularia canadensis (Persoon) G. Don var. occidentalis R. P. Rossbach 

Western sand spurrey. Native perennial. CNPS List 2.1 

Spergularia macrotheca (Hornemann ex von Chamisso & Schlechtendal) Heynhold 

var. longistyla R. P. Rossbach 

Large-flowered sand spurrey. Native perennial. 

Spergularia macrotheca (Hornemann ex von Chamisso & Schlechtendal) Heynhold var. macrotheca 

Sticky sand spurrey. Native perennial. 

Spergularia rubra (Linnaeus) J. Presl & C. Presl 

Sand spurrey, purple sand spurrey. Non-native annual-perennial. 

Spergularia salina J. Presl & C. Presl 

Salt sand spurrey. Native annual. 

Spergularia villosa (Persoon) Cambessèdes in A. St. Hilaire et al. 

Hairy sand spurrey. Non-native perennial. 

Stellaria borealis Bigelow ssp. sitchana (Steudel) Piper 

Boreal starwort. Native perennial. 

Stellaria calycantha (von Ledebour) Bongard 

Northern bog spurrey. Native perennial. 

Stellaria crispa von Chamisso & Schlechtendal 

Von Chamisso's starwort. Native perennial. 

Stellaria littoralis Torrey 

Beach starwort. Native perennial. CNPS List 4.2 

Stellaria longipes Goldie ssp. longipes 

Long-stalked chickweed. Native perennial. 

Stellaria media (Linnaeus) Villars 

Common chickweed. Non-native annual-perennial. 

Stellaria nitens Nuttall 

Shiny chickweed, shining chickweed. Native annual. 

Stellaria obtusa Engelmann 

Rocky Mtn. starwort, obtuse chickweed. Native perennial. CNPS List 4.3 

Stellaria umbellata Turczaninow ex Karelin & Kirilov 

Umbellate chickweed. Native perennial. 

Vaccaria hispanica (P. Miller) Rauschert 

Cow cockle, cow herb. Non-native annual. 

Velezia rigida Linnaeus 

Velezia. Non-native annual. 

CELASTRACEAE • Bittersweet or Staff Tree Family 

Euonymus occidentalis Nuttall ex Torrey var. occidentalis 

Western burning bush, heart's-bursting-with-love. Native shrub. 

Paxistima myrsinites (Pursh) Rafinesque 

Mountain lover, Oregon boxwood, boxwood, myrtle-boxwood. Native shrub. 

CERATOPHYLLACEAE • Hornwort Family 

Ceratophyllum demersum Linnaeus 

-17-

Hornwort, common coontail. Native annual-perennial. 

CHENOPODIACEAE • Goosefoot Family 

Atriplex californica Moquin-Tandon in de Candolle & de Candolle 

California saltbush, California orach. Native perennial. 

Atriplex gmelinii C. A. Meyer ex Bongard var. gmelinii 

Gmelin's saltweed, Gmelin's orache. Native annual. 

Atriplex heterosperma Bunge 

Russian atriplex. Non-native annual. 

Atriplex hortensis Linnaeus 

Garden orach. Non-native annual. 

Atriplex leucophylla (Moquin-Tandon) D. Dietrich 

Beach saltbush, sea scale. Native perennial. 

Atriplex micrantha C. A. Meyer 

Two-scale saltbush. Non-native annual. 

Atriplex patula Linnaeus 

Spear orache, spear saltbush. Native annual. 

Atriplex prostrata Bouchér ex de Candolle in Lamarck & A. P. de Candolle 

Fat-hen, spearscale. Native annual. 

Atriplex rosea Linnaeus 

Redscale, red orache, tumbling orach. Non-native annual. 

Atriplex semibaccata R. Brown 

Creeping saltbush. Non-native perennial. 

Bassia hyssopifolia (Pallas) Kuntze 

Five-hook bassia. Non-native annual. 

Chenopodium atrovirens Rydberg 

Piñon goosefoot. Native annual. 

Chenopodium berlandieri Moquin-Tandon var. sinuatum (J. Murr) H. A. Wahl 

Pit-seeded goosefoot. Native annual. 

Chenopodium berlandieri Moquin-Tandon var. zschackei (J. Murr) J. Murr in Urban & Graebner 

Pit-seeded goosefoot. Native annual. 

Chenopodium californicum (Watson) Watson in Brewer et al. 

Soap plant. Native perennial. 

Chenopodium capitatum (Linnaeus) Ambrosi var. capitatum 

Strawberry-blite. Non-native annual. 

Chenopodium chenopodioides (Linnaeus) Aellen in Osten et al. 

Low goosefoot. Non-native annual. 

Chenopodium desiccatum A. Nelson 

Arid land goosefoot. Non-native annual. 

Chenopodium hians Standley in Britton 

Hian’s goosefoot. Native annual. 

Chenopodium leptophyllum (Moquin-Tandon) Nuttall ex Watson 

Narrow-leaved goosefoot. Native annual. 

Chenopodium macrospermum Hooker f. var. halophilum (Philippi) Standley 

Large-seeded goosefoot. Non-native annual. 

Chenopodium murale Linnaeus 

Nettle-leaved goosefoot, wall goosefoot. Non-native annual. 

Chenopodium polyspermum Linnaeus var. acutifolium (J. E. Smith) Gaudin 

Many-seeded goosefoot. Non-native annual. 

Chenopodium rubrum Linnaeus var. rubrum 

Red goosefoot, red pigweed. Native annual. 

Dysphania ambrosioides (Linnaeus) Mosyakin & Clemants 

Mexican tea, wormseed. Non-native annual. 

Dysphania anthelmintica (Linnaeus) Mosyakin & Clemants 

Wormseed. Non-native annual-perennial. 

Dysphania botrys (Linnaeus) Mosyakin & Clemants 

Jerusalem-oak, feather-geranium. Non-native annual. 

Dysphania multifida (Linnaeus) Mosyakin & Clemants 

Tasmanian goosefoot, clammy goosefoot. Non-native annual. 

Dysphania pumilio (R. Brown) Mosyakin & Clemants 

Cut-leaved goosefoot, clammy goosefoot. Non-native annual. 

Salicornia bigelovii Torrey in W. H. Emory 

Dwarf saltwort. Native annual. 

Salicornia depressa Standley in N. L. Britton et al. 

Glasswort, pickle weed, samphire, woody saltwort. Native perennial-subshrub. 

Salsola tragus Linnaeus 

-18-

Russian thistle, tumble weed, prickly Russian thistle. Non-native annual. 

Sarcocornia pacifica (Standley) A. J. Scott 

Glasswort, pickle weed, samphire. Native perennial. 

Spinacia oleracea Linnaeus 

Spinach. Non-native annual. Escaped crop. 

CISTACEAE • Rock-rose Family 

Cistus ladanifer Linnaeus 

Crimson rock-rose, crimson spot rock-rose. Non-native shrub. 

Cistus monspeliensis Linnaeus 

Rock-rose. Non-native shrub. 

Helianthemum scoparium Nuttall 

Sun-rose, rush-rose, peak rush-rose. Native perennial. 

CLEOMACEAE ● Bee Plant Family 

Cleome platycarpa Torrey 

Golden bee plant. Native annual. 

Cleome serrulata Pursh 

Rocky Mountain bee plant. Native annual. 

Polanisia dodecandra (Linnaeus) de Candolle ssp. trachysperma (Torrey & Gray) Iltis 

Red-whiskered clammy weed. Native annual. 

COMANDRACEAE • Bastard Toadflax Family 

Comandra umbellata (Linnaeus) Nuttall ssp. californica (Eastwood ex Rydberg) Piehl 

Bastard toadflax. Native perennial. 

COMMELINACEAE • Spiderwort Family 

Tradescantia ohiensis Rafinesque-Schmaltz 

Bluejacket. Non-native perennial. Escaped ornamental. 

COMPOSITAE (ASTERACEAE) • Aster, Daisy or Sunflower Family 

Achillea filipendulina Lamarck 

Fern-leaved yarrow. Non-native perennial. 

Achillea millefolium Linnaeus 

Yarrow, milfoil. Native perennial. 

Achyrachaena mollis Schauer 

Blow-wives. Native annual. 

Acroptilon repens (Linnaeus) de Candolle 

Russian knapweed. Non-native perennial. 

Adenocaulon bicolor Hooker 

Trail plant, path finder. Native annual-perennial. 

Ageratina occidentalis (Hooker) R. King & H. Robinson 

Western eupatorium, western boneset. Native perennial. 

Ageratina shastensis (Taylor & Stebbins) R. King & H. Robinson 

Shasta eupatorium. Endemic perennial. CNPS List 4.2 

Ageratum conyzoides Linnaeus 

Tropical whiteweed. Non-native annual-perennial. 

Agnorhiza bolanderi (Gray) W. A. Weber 

Bolander’s false mule’s ear. Native perennial. 

Agoseris apargioides (Lessing) Greene ssp. apargioides 

Seaside agoseris, woolly agoseris. Native perennial. 

Agoseris apargioides (Lessing) Greene ssp. eastwoodiae (Fedde) Q. Jones 

Eastwood's agoseris. Native perennial. 

Agoseris apargioides (Lessing) Greene ssp. maritima (E. Sheldon) G. I. Baird 

Oregon agoseris. Native perennial. 

Agoseris aurantiaca (Hooker) Greene var. aurantiaca 

Orange-flowered agoseris. Native perennial. 

Agoseris glauca (Pursh) Rafinesque var. monticola (Greene) Q. Jones ex Cronquist 

Short-beaked agoseris. Native perennial. 

Agoseris grandiflora (Nuttall) Greene var. grandiflora 

Large-flowered agoseris. Native perennial. 

Agoseris grandiflora (Nuttall) Greene var. leptophylla G. I. Baird 

Large-flowered agoseris. Native annual. 

Agoseris heterophylla (Nuttall) Greene var. cryptopleura Greene 

California agoseris. Native annual. 

-19-

Agoseris heterophylla (Nuttall) Greene var. heterophylla 

Annual agoseris. Native annual. 

Agoseris hirsuta (Hooker) Greene 

Coast Range agoseris. Native perennial. 

Agoseris retrorsa (Bentham) Greene 

Spear-leaved agoseris. Native perennial. 

Ambrosia acanthicarpa Hooker 

Annual bur-sage, bur ragweed. Native perennial. 

Ambrosia artemisiifolia Linnaeus 

Common ragweed. Non-native annual. 

Ambrosia chamissonis (Lessing) Greene 

Bur weed, beach bur. Native perennial. 

Ambrosia psilostachya de Candolle 

Western ragweed. Native perennial. 

Anaphalis margaritacea (Linnaeus) Bentham & Hooker f. ex C. B. Clarke 

Pearly everlasting. Native perennial. 

Ancistrocarphus filagineus Gray 

Woolly fishhooks, woolly hookfruit. Native annual. 

Anisocarpus madioides Nuttall 

Woodland alpine tarplant. Native perennial. 

Anisocarpus scabridus (Eastwood) Baldwin 

scabrid raillardella, scabrid alpine tarplant. Native perennial. CNPS List 1B.3 

Antennaria argentea Bentham 

Silvery pussytoes. Native perennial. 

Antennaria corymbosa E. Nelson 

Meadow pussytoes, flat-topped pussytoes. Native perennial. 

Antennaria dimorpha (Nuttall) Torrey & Gray 

Low pussytoes. Native perennial. 

Antennaria geyeri Gray 

Geyer's pussytoes. Native perennial. 

Antennaria howellii Greene ssp. howellii 

Howell's pussytoes. Native perennial. 

Antennaria lanata (Hooker) Greene 

Woolly pussytoes. Native perennial. 

Antennaria luzuloides Torrey & Gray ssp. aberrans (E. E. Nelson) R. J. Bayer & Stebbins 

Woolly pussytoes. Native perennial. 

Antennaria luzuloides Torrey & Gray ssp. luzuloides 

Woodrush pussytoes. Native perennial. 

Antennaria media Greene 

Rocky Mountain pussytoes. Native perennial. 

Antennaria microphylla Rydberg 

Little-leaved pussytoes. Native perennial. 

Antennaria racemosa Hooker 

Slender everlasting. Native perennial. 

Antennaria rosea Greene ssp. confinis (Greene) R. J. Bayer 

Rosy pussytoes. Native perennial. 

Antennaria rosea Greene ssp. rosea 

Rosy pussytoes. Native perennial. 

Antennaria suffrutescens Greene 

Evergreen pussytoes, Siskiyou pussytoes. Endemic perennial. CNPS List 4.3 

Antennaria umbrinella Rydberg 

Brown pussytoes. Native perennial. 

Anthemis arvensis Linnaeus 

Field chamomile, corn chamomile. Native perennial. 

Anthemis cotula Linnaeus 

Mayweed, dog-fennel, stinkweed. Native perennial. 

Anthemis tinctoria Linnaeus 

Golden marguerite. Non-native perennial. 

Arctium lappa Linnaeus 

Great burdock. Non-native perennial. 

Arctium minus Bernhardi 

Common burdock. Non-native perennial. 

Arctotheca calendula (Linnaeus) Levyns 

Cape weed. Non-native annual-perennial. 

Arnica amplexicaulis Nuttall 

Streambank arnica. Native perennial. 

-20-

Arnica cernua T. J. Howell 

Serpentine arnica, nodding arnica. Endemic perennial. 

Arnica chamissonis Lessing 

Narrow-leaved arnica, leafy arnica, Chamisso’s arnica. Native perennial. 

Arnica cordifolia Hooker 

Heart-leaved arnica. Native perennial. 

Arnica dealbata (Gray) Baldwin 

Little leopard bane. Native perennial. 

Arnica discoidea Bentham 

Rayless arnica. Native perennial. 

Arnica latifolia Bongard 

Mountain arnica. Native perennial. 

Arnica longifolia D. C. Eaton 

Seep-spring arnica. Native perennial. 

Arnica mollis Hooker 

Cordilleran arnica, hairy arnica. Native perennial. 

Arnica nevadensis Gray 

Sierra arnica, Nevada arnica. Native perennial. 

Arnica ovata Greene 

Sticky-leaved arnica. Native perennial. 

Arnica parryi Gray 

Nodding arnica. Native perennial. 

Arnica spathulata Greene 

Klamath arnica. Native perennial. 

Arnica venosa Hall 

Shasta Co. arnica. Endemic perennial. CNPS List 4.2 

Arnica viscosa Gray 

Mt. Shasta arnica. Native perennial. CNPS List 4.3 

Artemisia arbuscula Nuttall ssp. arbuscula 

Dwarf sagebrush. Native shrub. 

Artemisia arbuscula Nuttall ssp. thermopola Beetle 

Cleft-leaved sagebrush. Native shrub. 

Artemisia biennis von Willdenow 

Biennial wormwood. Non-native annual-perennial. 

Artemisia borealis Pallas ssp. borealis 

Boreal sage. Native perennial. 

Artemisia californica Lessing 

Coastal sagewort. Native shrub. 

Artemisia campestris Linnaeus ssp. pacifica (Nuttall) Hall & Clements 

Western sagewort. Native perennial. 

Artemisia douglasiana Besser in Hooker 

Douglas' mugwort, Douglas’ sagewort. Native perennial. 

Artemisia dracunculus Linnaeus 

Tarragon, dragon wormwood. Native perennial. 

Artemisia furcata Bieberstein var. furcata 

Three-forked wormwood. Native perennial. 

Artemisia ludoviciana Nuttall ssp. ludoviciana 

Western mugwort. Native perennial. 

Artemisia norvegica Fries var. saxatilis (Besser) Hall & Clements 

Boreal sagebrush. Native perennial. 

Artemisia pycnocephala (Lessing) de Candolle 

Beach sage, beach wormwood, coastal sagewort. Native perennial. 

Artemisia suksdorfii Piper 

Coastal mugwort, Suksdorf’s sagewort. Native perennial. 

Artemisia tridentata Nuttall ssp. tridentata 

Common sagebrush. Native shrub. 

Baccharis douglasii de Candolle 

Coyote bush, salt marsh baccharis, Douglas' baccharis. Native perennial. 

Baccharis pilularis de Candolle var. consanguinea (de Candolle) C. B. Wolf 

Chaparral broom. Native shrub. 

Baccharis pilularis de Candolle var. pilularis 

Dwarf baccharis, dwarf chaparral broom. Native shrub. 

Baccharis salicifolia (Ruiz Lopez & Pavón) Persoon 

Mule fat. Native shrub. 

Balsamorhiza deltoidea Nuttall 

Deltoid balsamroot. Native perennial. 

-21-

Balsamorhiza lanata (W. M. Sharp) W. A. Weber 

Yreka balsamroot. Native perennial. CNPS List 1B.2 

Balsamorhiza macrolepis Sharp ssp. macrolepis 

California balsamroot. Native perennial. 

Balsamorhiza sericea Weber 

Silky balsamroot. Native perennial. CNPS List 1B.3 

Bellis perennis Linnaeus 

English daisy, lawn-daisy. Non-native perennial. 

Bidens cernua Linnaeus 

Nodding bur-marigold, beggar-ticks. Native annual. 

Bidens frondosa Linnaeus 

Beggar-ticks, stick-tight. Native annual. 

Bidens laevis (Linnaeus) Britton, Sterns, & Poggenburg 

Bur-marigold, beggar-ticks. Native annual. 

Bidens tripartita Linnaeus 

Three-lobed beggar-ticks. Native annual. 

Bidens vulgata Greene 

Tall bidens, western stick-tight. Non-native annual. 

Blennosperma bakeri Heiser 

Baker's blennosperma. Native annual. 

Blennosperma nanum (Hooker) Blake var. nanum 

Common sticky seed. Native annual. 

Blennosperma nanum (Hooker) Blake var. robustum J. T. Howell 

Pt. Reyes blennosperma. Native annual. CNPS List 1B.2 • State: rare. 

Blepharipappus scaber Hooker 

Rough eyelash weed. Native annual. 

Brickellia californica (Torrey & Gray) Gray 

California brickellia, California brickell bush. Native shrub. 

Brickellia grandiflora (Hooker) Nuttall 

Large-flowered brickellia, tassel flower. Native shrub. 

Brickellia greenei Gray 

Greene's brickellia, Greene’s tassel flower. Native shrub. 

Cacaliopsis nardosmia (Gray) Gray 

Silver crown. Native perennial. 

Calendula arvensis Linnaeus 

Field-marigold. Non-native annual. 

Calycadenia fremontii Gray 

Klamath calycadenia, Klamath rosin weed. Native annual. 

Calycadenia micrantha R. L. Carr & G. D. Carr 

Western rosin weed. Native annual. 

Calycadenia multiglandulosa de Candolle in A. p. de Candolle & A. L. P. P. de Candolle 

Sticky western rosin weed. Native annual. 

Calycadenia pauciflora Gray 

Small-flowered calycadenia. Native annual. 

Calycadenia truncata de Candolle 

Oregon western rosin weed. Native annual. 

Carduus acanthoides Linnaeus ssp. acanthoides 

Plumeless thistle. Non-native perennial. 

Carduus nutans Linnaeus 

Musk thistle. Non-native perennial. 

Carduus pycnocephalus Linnaeus ssp. pycnocephalus 

Italian thistle. Non-native annual-perennial. 

Carduus tenuiflorus Curtis 

Italian thistle, slender-flowered thistle. Non-native annual-perennial. 

Carthamus creticus Linnaeus 

Woolly distaff thistle. Non-native annual. 

Carthamus lanatus Linnaeus 

Distaff thistle, woolly distaff thistle. Non-native annual. 

Centaurea benedicta (Linnaeus) Linnaeus 

Blessed thistle. Non-native annual. 

Centaurea calcitrapa Linnaeus 

Purple star thistle. Non-native annual-perennial. 

Centaurea cyanus Linnaeus 

Corn flower, bachelor's button. Non-native annual. 

Centaurea diffusa Lamarck 

Diffuse knapweed, tumble knapweed. Non-native annual-perennial. 

-22-

Centaurea jacea Linnaeus 

Brown knapweed, brown-rayed knapweed. Non-native perennial. 

Centaurea melitensis Linnaeus 

Tocalote, Napa thistle. Non-native annual. 

Centaurea nigra Linnaeus 

Black knapweed, hardheads. Non-native perennial. 

Centaurea solstitialis Linnaeus 

Yellow star thistle, St. Barnaby's thistle. Non-native annual. 

Centaurea stroebe Linnaeus ssp. micranthos (Gmelin ex Gugler) Hayek 

Spotted knapweed. Non-native perennial. 

Centaurea virgata Lamarck in J. Lamarck et al. ssp. squarrosa (Boissier) Gugler 

Squarrose knapweed. Non-native perennial. 

Centromadia fitchii (Gray) Greene 

Fitch's tarweed, Fitch's spikeweed. Native annual. 

Centromadia parryi (Greene) Greene ssp. rudis (Greene) Baldwin 

Parry’s false tarplant. Native annual. 

Centromadia pungens (Hooker & Arnott) Greene ssp. pungens 

Common spineweed. Native annual. 

Chaenactis douglasii (Hooker) Hooker & Arnott var. alpina Gray 

Alpine dusty maidens. Native perennial. 

Chaenactis douglasii (Hooker) Hooker & Arnott var. douglasii 

Hoary chaenactis. Native perennial. 

Chaenactis glabriuscula de Candolle var. heterocarpha (Gray) Hall 

Yellow chaenactis, yellow pin-cushion. Native annual. 

Chaenactis glabriuscula de Candolle var. lanosa (de Candolle) Hall 

Yellow pin-cushion. Native annual. 

Chaenactis suffrutescens Gray 

Shasta chaenactis. Endemic perennial. CNPS List 1B.3 

Chamaemulum fuscatum (Brotero) Vasconcellos 

Dusky dog fennel. Non-native annual. 

Chamaemulum nobile (Linnaeus) Allioni 

Chamomile, Russian chamomile. Non-native annual. 

Chondrilla juncea Linnaeus 

Skeleton weed, gum succory. Non-native perennial. 

Chrysothamnus viscidiflorus (Hooker) Nuttall ssp. viscidiflorus 

Yellow rabbit brush. Native shrub. 

Cichorium intybus Linnaeus 

Chicory, wild succory. Non-native annual-perennial. 

Cirsium andersonii (Gray) Petrak 

Anderson's thistle. Native perennial. 

Cirsium arvense (Linnaeus) Scopoli 

Canada thistle, creeping thistle. Non-native perennial. 

Cirsium brevistylum Cronquist 

Indian thistle. Native annual-perennial. 

Cirsium ciliolatum (Henderson) J. T. Howell 

Ashland thistle. Endemic perennial. CNPS List 2.1 • State: rare. 

Cirsium cymosum (Greene) J. T. Howell var. cymosum 

Peregrine thistle, Greene’s thistle. Native perennial. 

Cirsium douglasii de Candolle var. breweri (Gray) D. J. Keil & C. Turner 

Douglas’ thistle. Native perennial. 

Cirsium douglasii de Candolle var. douglasii 

Douglas’ thistle, swamp thistle. Native perennial. 

Cirsium ochrocentrum (Gray) Gray var. ochrocentrum 

Yellow-spine thistle. Native perennial. 

Cirsium occidentale (Nuttall) Jepson var. californicum (Gray) D. Keil & C. Turner 

Cobwebby thistle. Native perennial. 

Cirsium occidentale (Nuttall) Jepson var. candidissimum (Greene) J. F. Macbride 

Snowy thistle. Native perennial. 

Cirsium occidentale (Nuttall) Jepson var. occidentale 

Cobwebby thistle. Native perennial. 

Cirsium occidentale (Nuttall) Jepson var. venustum (Greene) Jepson 

Venus thistle. Native perennial. 

Cirsium quercetorum (Gray) Jepson 

Brownie thistle. Native perennial. 

Cirsium remotifolium (Hooker) de Candolle var. odontolepis Petrak 

Pacific fringe-scaled thistle. Native perennial. 

-23-

Cirsium remotifolium (Hooker) de Candolle var. remotifolium 

Remote-leaved thistle. Native perennial. 

Cirsium remotifolium (Hooker) de Candolle var. rivulare Jepson 

Klamath thistle. Native perennial. 

Cirsium scariosum Nuttall var. robustum D. J. Keil 

Elk thistle. Native perennial. 

Cirsium scariosum Nuttall var. scariosum 

Elk thistle. Native perennial. 

Cirsium vulgare (Savi) Tenore 

Bull thistle, common thistle. Non-native perennial. 

Conyza canadensis (Linnaeus) Cronquist 

Horseweed. Native annual. 

Conyza floribunda Kunth in von Humboldt et al. 

Asthma weed. Non-native annual. 

Coreopsis lanceolata Linnaeus 

Garden coreopsis. Non-native perennial. 

Coreopsis stillmanii (Gray) S. F. Blake 

Stillman’s tickseed. Native annual. 

Coreopsis tinctoria Nuttall var. tinctoria 

Calliopsis, golden tickseed. Non-native annual. 

Corethrogyne filaginifolia (Hooker & Arnott) Nuttall 

California-aster. Native perennial. 

Cosmos bipinnatus Cavanilles 

Garden cosmos. Non-native annual. Escaped ornamental. 

Cosmos sulphureus Cavanilles 

Sulfur cosmos. Non-native annual. 

Cotula australis (Sieber ex Sprengel) Hooker f. 

Australian brass buttons. Non-native annual. 

Cotula coronopifolia Linnaeus 

Common brass buttons. Non-native perennial. 

Crepis acuminata Nuttall 

Long-leaved hawksbeard. Native perennial. 

Crepis bakeri Greene ssp. bakeri 

Baker's hawksbeard. Native perennial. 

Crepis bakeri Greene ssp. cusickii (Eastwood) Babcock & Stebbins 

Cusick’s hawksbeard. Native perennial. 

Crepis capillaris (Linnaeus) Wallroth 

Smooth hawksbeard. Non-native annual-perennial. 

Crepis intermedia Gray 

Intermediate hawksbeard. Native perennial. 

Crepis monticola Coville 

Mountain hawksbeard, Siskiyou hawksbeard. Native perennial. 

Crepis occidentalis Nuttall ssp. conjuncta Babcock & Stebbins 

Gray hawksbeard, western hawksbeard. Native perennial. 

Crepis occidentalis Nuttall ssp. costata (Gray) Babcock & Stebbins 


Crepis occidentalis Nuttall ssp. pumila (Rydberg) Babcock & Stebbins 


Crepis pleurocarpa Gray 

Naked-stemmed hawksbeard. Native perennial. 

Crepis setosa Haller f. 

Rough hawksbeard. Non-native annual. 

Crepis vesicaria Linnaeus 

Rough hawksbeard. Non-native annual-perennial. 

Crocidium multicaule Hooker 

Spring gold, gold star. Native annual. 

Cynara cardunculus Linnaeus ssp. cardunculus 

Artichoke, cardoon. Non-native perennial. 

Cynara cardunculus Linnaeus ssp. flavescens Wiklund 

Artichoke thistle. Non-native perennial. 

Deinandra corymbosa (de Candolle) Baldwin ssp. corymbosa 

Coast tarweed. Native annual. 

Deinandra kelloggii (Greene) Greene 

Kellogg’s tarweed. Native annual. Historic collection; doubtfully pesisting. 

Delairea odorata Lemaire 

German-ivy, parlor-ivy, cape-ivy. Non-native perennial. 

-24-

Dieteria canescens (Pursh) Nuttall var. canescens 

Hoary-aster. Native annual-perennial. 

Dieteria canescens (Pursh) Nuttall var. incana (Lindley) Morgan & Hartman 

Tall hoary-aster. Native annual-perennial. 

Dieteria canescens (Pursh) Nuttall var. shastensis (Gray) Morgan & Hartman 

Shasta-aster. Native annual-perennial. 

Erechtites glomeratus (Poiret) de Candolle 

Fireweed, Australian fireweed. Non-native annual-perennial. 

Erechtites hieracifolius (Linnaeus) Rafinesque ex de Candolle in A. P. & A. L. P. P. de Candolle var. h. 

American fireweed. Native annual. 

Erechtites minimus (Poiret) de Candolle 

Australian fireweed. Non-native annual-perennial. 

Ericameria arborescens (Gray) Greene 

Golden fleece. Native shrub. 

Ericameria bloomeri (Gray) Macbride 

Bloomer's macronema, rabbitbrush golden weed. Native shrub. 

Ericameria ericoides (Lessing) Jepson 

Golden fleece. Native shrub. 

Ericameria greenei (Gray) G. L. Nesom 

Greene's macronema. Native shrub. 

Ericameria linearifolia (de Candolle) Urbatsch & Wussow 

Narrowleaf golden bush, interior golden bush. Native shrub. 

Ericameria nauseosa (Pallas & Pursh) G. L. Nesom & Baird var. speciosa (Nuttall) G. L. Nesom & Baird 

Common rabbit bush, rubber rabbit brush. Native shrub. 

Ericameria ophitidis (J. T. Howell) G. L. Nesom 

Serpentine haplopappus. Endemic shrub. CNPS List 4.3 

Ericameria parryi (Gray) G. L. Nesom & Baird var. latior (Hall & Clements) G. L. Nesom & Baird 

Parry's rabbit brush. Native shrub. 

Erigeron aliceae T. J. Howell 

Eastwood's daisy, Alice’s fleabane. Native perennial. 

Erigeron annuus (Linnaeus) Persoon 

Annual daisy. Non-native annual. 

Erigeron biolettii Greene 

Biolett’s daisy. Native perennial. CNPS List 3 

Erigeron bloomeri Gray var. bloomeri 

Bloomer's daisy. Native perennial. 

Erigeron bloomeri Gray var. nudatus (Gray) Cronquist 

Waldo daisy. Endemic perennial. CNPS List 2.3 

Erigeron cervinus Greene 

Siskiyou daisy, Siskiyou fleabane. Endemic perennial. CNPS List 4.3 

Erigeron compositus Pursh 

Cut-leaved daisy, dwarf mountain fleabane. Native perennial. 

Erigeron concinnus (Hooker & Arnott) Torrey & Gray 

Navajo fleabane. Native perennial. 

Erigeron divergens Torrey & Gray 

Diffuse daisy. Native annual. 

Erigeron eatonii Gray var. plantagineus (Greene) Cronquist in C. L. Hitchcock et al. 

Plantain-leaved daisy. Native perennial. 

Erigeron elegantulus Greene 

Volcanic daisy, blue dwarf fleabane. Native perennial. CNPS List 4.3 

Erigeron filifolius (Hooker) Nuttall 

Thread-leaved fleabane. Native perennial. 

Erigeron foliosus Nuttall var. confinis (T. J. Howell) Jepson 

Leafy fleabane. Native perennial. 

Erigeron foliosus Nuttall var. mendocinus (Greene) G. L. Nesom 

Leafy fleabane. Endemic perennial. 

Erigeron glacialis (Nuttall) A. Nelson var. glacialis 

Subalpine fleabane. Native perennial. 

Erigeron glacialis (Nuttall) A. Nelson var. hirsutus (Cronquist) G. L. Nesom 

Subalpine fleabane. Native perennial. 

Erigeron glaucus Ker-Gawler 

Seaside daisy, beach fleabane. Native perennial. 

Erigeron greenei G. L. Nesom 

Serpentine fleabane. Native perennial. 

Erigeron inornatus Gray var. inornatus 

California rayless daisy. Native perennial. 

-25-

Erigeron klamathensis (G. L. Nesom) G. L. Nesom 

Klamath fleabane. Endemic perennial. 

Erigeron lassenianus Greene var. lassenianus 

Mt. Lassen fleabane. Native perennial. 

Erigeron maniopotamicus G. L. Nesom & T. W. Nelson 

Mad River fleabane. Endemic perennial. 

Erigeron nivalis Nuttall 

Snow fleabane. Native perennial. 

Erigeron petrophilus Greene var. petrophilus 

Rock daisy. Native perennial. 

Erigeron petrophilus Greene var. viscidulus (Gray) G. L. Nesom 

Rayless daisy. Endemic perennial. CNPS List 4.3 

Erigeron philadelphicus Linnaeus var. philadelphicus 

Philadelphia daisy. Native perennial. 

Erigeron pumilus Nuttall ssp. intermedius Cronquist 

Hairy daisy. Native perennial. 

Erigeron reductus (Cronquist) G. L. Nesom var. angustatus (Gray) G. L. Nesom 

California rayless fleabane. Native perennial. 

Erigeron robustior (Cronquist) G. L. Nesom 

Serpentine fleabane, robust daisy, Willamette daisy. Native perennial. CNPS List 4.3 

Erigeron strigosus Muhlenberg ex von Willdenow 

Branching daisy. Non-native annual-perennial. 

Erigeron supplex Gray 

Supple daisy. Native perennial. CNPS List 1B.2 

Erigeron tener (Gray) Gray 

Slender daisy. Native perennial. 

Eriophyllum confertiflorum (de Candolle) Gray var. confertiflorum 

Yellow-yarrow, golden-yarrow 

Eriophyllum lanatum (Pursh) Forbes var. achillaeoides (de Candolle) Jepson 

Common woolly-sunflower. Native annual-perennial. 

Eriophyllum lanatum (Pursh) Forbes var. arachnoideum (Fischer & Avé-Lallemant) Jepson 

Common woolly-sunflower. Native perennial. 

Eriophyllum lanatum (Pursh) Forbes var. grandiflorum (Gray) Jepson 


Eriophyllum lanatum (Pursh) Forbes var. integrifolium (Hooker) Smiley 


Eriophyllum lanatum (Pursh) Forbes var. lanceolatum (T. J. Howell) Jepson 

Common woolly-sunflower. Endemic perennial. 

Eriophyllum staechadifolium Lagasca 

Seaside woolly-sunflower, lizard tail. Native perennial. 

Eucephalus breweri (Gray) G. L. Nesom 

Brewer's aster. Native perennial. 

Eucephalus glabratus (Greene) Greene 

Smooth wayside aster. Native perennial. 

Eucephalus ledophyllus (Gray) Greene var. covillei (Greene) G. L. Nesom 

Cascade aster. Native perennial. 

Eucephalus tomentellus (Greene) Greene 

Brickell-bush aster, rayless leafy aster. Native subshrub. 

Eucephalus vialis Bradshaw 

Wayside aster. Native perennial. 

Euchiton gymnocephalus (de Candolle) Holub 

Creeping cudweed. Non-native perennial. 

Euchiton involucratus (G. Forster) Holub 

Common cudweed. Non-native perennial. 

Euchiton japonicus (Thunberg) A. Anderberg 

Father-and-child plant. Non-native annual. 

Euchiton sphaericus (von Willdenow) Holub 

Japanese cudweed, star cudweed. Non-native annual. 

Eurybia merita (A. Nelson) G. L. Nesom 

Subalpine-aster. Native perennial. 

Eurybia radulina (Gray) G. L. Nesom 

Rough-leaf wood-aster. Native perennial. 

Euthamia occidentalis Nuttall 

Western goldenrod. Native perennial. 

Filago pyramidata Linnaeus var. pyramidata 

Broad-leaved cotton-rose. Non-native annual. 

-26-

Gamochaeta coarctata (von Willdenow) Kerguélen 

Gray everlasting. Non-native perennial. 

Gamochaeta pensylvanica (von Willdenow) Cabrera 

Pennsylvania everlasting. Native perennial. 

Gamochaeta ustulata (Nuttall) G. L. Nesom 

Feather weed. Native perennial. 

Glebionis coronaria (Linnaeus) Cassini ex Spach 

Crown daisy, garland chrysanthemum. Non-native annual. 

Glebionis segetum (Linnaeus) Fourreau 

Corn chrysanthemum, corn-marigold, corn daisy. Non-native annual. 

Gnaphalium palustre Nuttall 

Lowland cudweed, western marsh cudweed. Native annual. 

Grindelia hirsutula Hooker & Arnott 

Hairy gumweed. Native perennial. 

Gutierrezia californica (de Candolle) Torrey & Gray 

California matchweed. Native perennial. 

Harmonia doris-nilesiae (T. W. Nelson & J. P. Nelson) Baldwin 

Niles’ tarweed. Endemic annual. CNPS List 1B.1 

Harmonia hallii (Keck) Baldwin 

Hall’s tarweed. Endemic annual. CNPS List 1B.2 

Harmonia stebbinsii (T. W. Nelson & J. P. Nelson) Baldwin 

Stebbins' tarweed. Native annual. CNPS List 1B.2 

Hazardia whitneyi (Gray) Greene var. discoidea (J. T. Howell) Clark 

Whitney's goldenbush. Native perennial. 

Hedypnois cretica (Linnaeus) Dumont de Courset 

Cretan weed. Non-native annual. 

Helenium autumnale Linnaeus 

Common sneezeweed. Native perennial. 

Helenium bigelovii Gray 

Bigelow's sneezeweed. Native perennial. 

Helenium bolanderi Gray 

Coast sneezeweed. Native perennial. 

Helenium puberulum de Candolle 

Rosilla. Native annual. 

Helianthella californica Gray ssp. californica 

California dwarf-sunflower. Native shrub. 

Helianthella californica Gray ssp. nevadensis (Greene) W. A. Weber 

California dwarf-sunflower. Native shrub. 

Helianthella californica Gray ssp. shastensis (W. A. Weber) W. A. Weber 

Mt. Eddy dwarf-sunflower. Native shrub. 

Helianthus annuus Linnaeus 

Common sunflower. Native perennial. 

Helianthus bolanderi Gray 

Bolander's sunflower. Native annual. 

Helianthus exilis Gray 

Slender sunflower. Native annual. CNPS List 4.2 

Helichrysum petiolare Hilliard & Burtt 

Licorice plant. Non-native perennial. 

Helminthotheca echioides (Linnaeus) Holub 

Bristly oxtongue. Non-native annual-perennial. 

Hemizonella minima (Gray) Gray 

Opposite-leaved tarweed. Native annual. 

Hemizonia congesta de Candolle ssp. calyculata Babcock & Hall 

Mendocino tarplant. Endemic annual. CNPS List 4.3 

Hemizonia congesta de Candolle ssp. clevelandii (Greene) Babcock & Hall 

Cleveland's tarweed. Native annual. CNPS List 

Hemizonia congesta de Candolle ssp. congesta 

Hayfield tarplant. Native annual. 

Hemizonia congesta de Candolle ssp. luzulifolia (de Candolle) Babcock & Hall 

Hayfield tarweed. Native annual. 

Hemizonia congesta de Candolle ssp. tracyi Babcock & Hall 

Tracy's tarweed. Endemic annual. CNPS List 4.3 

Hesperevax acaulis (Kellogg) Greene var. robustior J. Morefield 

Stemless hesperevax. Native annual. 

Hesperevax sparsiflora (Gray) Greene var. brevifolia (Gray) J. Morefield 

Short-leaved evax. Native annual. CNPS List 2.2 

-27-

Heterotheca oregona (Nuttall) Shinners var. compacta (Keck) Semple 

Oregon golden-aster. Native perennial. 

Heterotheca oregona (Nuttall) Shinners var. oregona 

Oregon golden-aster. Native perennial. 

Heterotheca oregona (Nuttall) Shinners var. rudis (Greene) Jepson 

Oregon false golden-aster. Native perennial. 

Heterotheca sessiliflora (Nuttall) Shinners ssp. bolanderi (Gray) Semple 

Bolander's golden-aster. Native perennial. 

Heterotheca villosa (Pursh) Shinners var. minor (Hooker) Semple 

Golden-aster. Native perennial. 

Hieracium albiflorum Hooker 

White-flowered hawkweed. Native perennial. 

Hieracium bolanderi Gray 

Bolander's hawkweed. Native perennial. 

Hieracium greenei Gray 

Greene's hawkweed. Native perennial. 

Hieracium horridum Fries 

Shaggy hawkweed. Native perennial. 

Hieracium nudicaule (Gray) Heller 

Naked-stemmed hawkweed. Native perennial. 

Hieracium scouleri Hooker 

Scouler's hawkweed. Native perennial. 

Hieracium triste Willdenow ex Sprengel 

Woolly hawkweed. Native perennial. 

Holocarpha heermannii (Greene) Keck 

Heermann’s tarweed. Native annual. 

Holocarpha virgata (Gray) Keck ssp. virgata 

Yellow-flowered tarweed. Native annual. 

Holozonia filipes (Hooker & Arnott) Greene 

White crown. Native perennial. 

Hulsea nana Gray 

Dwarf hulsea. Native annual. CNPS List 2.3 

Hymenoxys hoopesii (Gray) Bierner 

Owl’s-claws, orange sneezeweed. Native perennial. 

Hymenoxys lemmonii (Greene) Cockerell 

Lemmon's goldflower. Native perennial. 

Hypochaeris glabra Linnaeus 

Smooth cat's-ear. Non-native annual. 

Hypochaeris radicata Linnaeus 

Hairy cat's-ear. Non-native perennial. 

Inula helenium Linnaeus 

Elecampane. Non-native perennial. 

Iva axillaris Pursh 

Poverty weed. Native perennial. 

Jaumea carnosa (Lessing) Gray in C. Wilkes et al. 

Fleshy jaumea. Native perennial. 

Kyhosia bolanderi (Gray) Baldwin 

Bolander’s tarweed. Native perennial. 

Lactuca biennis (Moench) Fernald 

Tall blue lettuce. Non-native perennial. 

Lactuca canadensis Linnaeus 

Tall lettuce, Canadian wild lettuce. Non-native perennial. 

Lactuca ludoviciana (Nuttall) Riddell 

Western lettuce. Non-native perennial. 

Lactuca saligna Linnaeus 

Willow lettuce. Non-native annual. 

Lactuca sativa Linnaeus 

Lettuce. Non-native annual-perennial. 

Lactuca serriola Linnaeus 

Prickly lettuce. Non-native annual. 

Lagophylla glandulosa Gray 

Glandular hareleaf. Native annual. 

Lagophylla minor (Keck) Keck 

Lesser hareleaf. Native annual. 

Lagophylla ramosissima Nuttall 

Common hareleaf. Native annual. 

-28-

Lapsana communis Linnaeus 

Nipplewort. Non-native annual. 

Lasthenia burkei (Greene) Greene 

Burke's goldfields. Native annual. CNPS List 1B.1 • Federal: endangered • State: endangered. 

Lasthenia californica de Candolle ex Lindley ssp. bakeri (J. T. Howell) R. Chan 

Baker’s goldfields. Native annual. CNPS List 1B.2 

Lasthenia californica de Candolle ex Lindley ssp. californica 

Coast goldfields. Native annual. 

Lasthenia californica de Candolle ex Lindley ssp. macrantha 

Perennial goldfields. Native annual. CNPS List 1B.2 

Lasthenia conjugens Greene 

Contra Costa goldfields. Native annual. Historic collection. CNPS List 1B.1 • Federal: endangered. 

Lasthenia fremontii (Torrey & Gray) Greene 

Fremont's goldfields. Native annual. 

Lasthenia glaberrima de Candolle 

Smooth goldfields. Native annual. 

Lasthenia glabrata Lindley ssp. glabrata 

Yellow-rayed goldfields. Native annual. 

Lasthenia gracilis (de Candolle) Greene 

California goldfields. Native annual. 

Lasthenia maritima (Gray) M. Vasey 

Woolly goldfields. Native annual. 

Lasthenia microglossa (de Candolle) Greene 

Small-rayed goldfields. Native annual. 

Lasthenia minor (de Candolle) Ornduff 

Goldfields. Native annual. 

Layia carnosa (Nuttall) Torrey & Gray 

Beach layia. Native annual. CNPS List 1B.1 • Federal: endangered • State: endangered. 

Layia chrysanthemoides (de Candolle) Gray ssp. chrysanthemoides 

Smooth layia. Native annual. 

Layia gaillardioides (Hooker & Arnott) de Candolle 

Woodland layia. Native annual. 

Layia platyglossa (Fischer & Meyer) Gray 

Tidy tips. Native annual. 

Layia septentrionalis Keck 

Colusa layia. Native annual. CNPS List 1B.2 

Leontodon saxatilis Lamarck ssp. longirostris (Finch & P. D. Sell) P. Silva 

Hairy hawkbit. Non-native perennial. 

Leontodon saxatilis Lamarck ssp. saxatilis 

Hairy hawkbit. Non-native perennial. 

Lessingia leptoclada Gray 

Sierra lessingia. Native annual. 

Lessingia nemaclada Greene 

Greene’s slender-stemmed lessingia. Native annual. 

Lessingia ramulosa Gray 

Sonoma lessingia. Native annual. 

Leucanthemum maximum (Ramond) de Candolle in A. P. de Candolle & A. L. P. P. de Candolle 

Shasta daisy. Non-native perennial. Escaped ornamental. 

Leucanthemum vulgare Lamarck 

Ox-eye daisy. Non-native perennial. Escaped ornamental. 

Logfia filaginoides (Hooker & Arnott) Morefield 

California cotton-rose. Native annual. 

Logfia gallica (Linnaeus) Cosson & Germain de Saint-Pierre 

Narrow-leaved cotton-rose. Non-native annual. 

Luina hypoleuca Bentham 

Little-leaf luina, silverback luina. Native perennial. 

Madia anomala Greene 

Plump-seeded tarweed. Native annual. 

Madia citrigracilis Keck 

Shasta tarweed. Native annual. 

Madia citriodora Greene 

Lemon-scented tarweed. Native annual. 

Madia elegans D. Don ex Lindley 

Common madia. Native annual. 

Madia exigua (Smith) Gray 

Small tarweed, thread-stemmed tarweed. Native annual. 

-29-

Madia glomerata Hooker 

Tarweed, mountain tarweed. Native annual. 

Madia gracilis (Smith) Keck 

Gumweed, slender tarweed. Native annual. 

Madia sativa Molina 

Chilean tarweed, coast tarweed. Native annual. 

Malacothrix clevelandii Gray 

Cleveland's malacothrix. Native annual. 

Malacothrix floccifera (de Candolle) Blake 

Woolly malacothrix. Native annual. 

Matricaria discoidea de Candolle 

Pineapple weed. Non-native annual. 

Matricaria occidentalis Greene 

Western pineapple weed. Native annual. 

Micropus amphibolus Gray 

Mt. Diablo cottonweed. Native annual. CNPS List 3.2 

Micropus californicus Fischer & Meyer var. californicus 

Slender cottonweed. Native annual. 

Microseris acuminata Greene 

Sierra foothills microseris. Native annual. 

Microseris bigelovii (Gray) Schultz-Bipontinus 

Coast silverpuffs. Native annual. 

Microseris borealis (Bongard) Schultz-Bipontinus 

Bog silverpuffs. Native perennial. CNPS List 2.1 

Microseris douglasii (de Candolle) Schultz-Bipontinus ssp. douglasii 

Douglas' silverpuffs. Native annual. 

Microseris elegans Greene ex Gray 

Elegant silverpuffs. Native annual. 

Microseris laciniata (Hooker) Schultz-Bipontinus ssp. detlingii Chambers 

Detling’s silverpuffs. Native perennial. 

Microseris laciniata (Hooker) Schultz-Bipontinus ssp. laciniata 

Cut-leaved scorzonella, cut-leaved silverpuffs. Native perennial. 

Microseris laciniata (Hooker) Schultz-Bipontinus ssp. leptosepala (Nuttall) Chambers 

Slender silverpuffs. Native perennial. 

Microseris laciniata (Hooker) Schultz-Bipontinus ssp. siskiyouensis Chambers 

Siskiyou silverpuffs. Endemic perennial. 

Microseris nutans (Hooker) Schultz-Bipontinus 

Nodding scorzonella, silverpuffs. Native perennial. 

Microseris paludosa (Greene) T. J. Howell 

Marsh silverpuffs. Native perennial. CNPS List 1B.2 

Microseris sylvatica (Bentham) Gray 

Sylvan scorzonella, silverpuffs. Native perennial. 

Monolopia major de Candolle 

Cupped monolopia. Native annual. 

Nothocalaïs alpestris (Gray) Chambers 

Alpine lake agoseris. Native perennial. 

Nothocalaïs troximoides (Gray) Greene 

False agoseris. Native perennial. 

Onopordum acanthium Linnaeus ssp. acanthium 

Scots thistle, Scotch thistle, cotton thistle. Non-native perennial. 

Onopordum tauricum von Willdenow 

Scots thistle. Non-native perennial. 

Oreostemma alpigenum (Torrey & Gray) Greene var. andersonii (Gray) G. L. Nesom 

Tundra mountain crown. Native perennial. 

Packera bolanderi (Gray) W. A. Weber & Á. Löve var. bolanderi 

Bolander’s groundsel. Native perennial. CNPS List 2.2 

Packera cana (Hooker) W. A. Weber & Á. Löve 

Silver-woolly groundsel. Native perennial. 

Packera clevelandii (Greene) W. A. Weber & Á. Löve 

Cleveland’s groundsel. Native perennial. CNPS List 4.3 

Packera eurycephala (Torrey & Gray ex Gray) W. A. Weber & Á. Löve var. eurycephala 

Siskiyou groundsel. Native perennial. 

Packera greenei (Gray) W. A. Weber & Á. Löve 

Flame groundsel. Native perennial. 

Packera hesperia (Greene) W. A. Weber & Á. Löve 

Western ragwort, western groundsel. Native perennial. 

-30-

Packera macounii (Greene) W. A. Weber & Á. Löve 

Siskiyou Mtn. groundsel. Native perennial. CNPS List 4.3 

Packera streptanthifolia (Greene) W. A. Weber & Á. Löve 

Rocky Mountain groundsel. Native perennial. 

Packera subnuda (de Candolle) Trock & T. M. Barkley var. subnuda 

Buek’s groundsel. Native perennial. 

Pentachaeta alsinoides Greene 

Tiny pigmy-daisy. Native annual. 

Pentachaeta exilis Gray ssp. exilis 

Meager pigmy-daisy. Native annual. 

Petasites frigidus (Linnaeus) Fries var. palmatus (Aiton) Cronquist 

Coltsfoot. Non-native annual-perennial. 

Pseudognaphalium beneolens (Davidson) A. Anderberg 

Fragrant rabbit-tobacco. Native annual-perennial. 

Pseudognaphalium californicum (de Candolle) A. Anderberg 

Ladies-tobacco. Native annual-perennial. 

Pseudognaphalium canescens (de Candolle) W. A. Weber 

Wright’s rabbit-tobacco. Native perennial. 

Pseudognaphalium luteoalbum (Linnaeus) Hilliard & Burtt 

Jersey cudweed, weedy cudweed. Non-native annual. 

Pseudognaphalium macounii (Greene) Kartesz 

Macoun’s rabbit-tobacco. Native annual-perennial. 

Pseudognaphalium microcephalum (Nuttall) Anderberg 

San Diego rabbit-tobacco. Native perennial. 

Pseudognaphalium ramosissimum (Nuttall) A. Anderberg 

Pink rabbit-tobacco. Native perennial. 

Pseudognaphalium stramineum (Kunth) W. A. Weber 

Cotton batting plant. Native annual-perennial. 

Pseudognaphalium thermale (E. E. Nelson) G. L. Nesom 

Northwestern rabbit-tobacco. Native perennial. 

Psilocarphus brevissimus Nuttall var. brevissimus 

Round woolly-heads, dwarf woolly-heads. Native annual. 

Psilocarphus brevissimus Nuttall var. multiflorus Cronquist 

Round woolly-heads. Native annual. 

Psilocarphus elatior (Gray) Gray in Gray et al. 

Tall woolly-heads, meadow woolly-heads. Native annual. 

Psilocarphus oregonus Nuttall 

Oregon woolly-heads. Native annual. 

Psilocarphus tenellus Nuttall 

Slender woolly-heads. Native annual. 

Pyrrocoma lanceolata (Hooker) Greene var. lanceolata 

Lance-leaved golden weed. Native perennial. 

Pyrrocoma racemosa (Nuttall) Torrey & Gray var. congesta (Greene) G. Brown & D. Keil 

Clustered golden weed. Endemic perennial. CNPS List 2.1 

Pyrrocoma racemosa (Nuttall) Torrey & Gray var. pinetorum (Keck) Kartesz & Gandhi 

Clustered golden weed. Endemic perennial. 

Pyrrocoma racemosa (Nuttall) Torrey & Gray var. racemosa 

Racemed golden weed. Native perennial. 

Rafinesquia californica Nuttall 

California-chicory. Native annual. 

Raillardella pringlei Greene 

Showy raillardella. Endemic perennial. CNPS List 1B.2 

Rigiopappus leptocladus Gray 

Bristlehead. Native annual. 

Rudbeckia californica Gray 

California coneflower. Native perennial. 

Rudbeckia glaucescens Eastwood 

Waxy coneflower. Native perennial. 

Rudbeckia hirta Linnaeus var. pulcherrima Farwell 

Black-eyed Susan. Native annual-perennial. 

Rudbeckia klamathensis P. B. Cox & Urbatsch 

California coneflower. Endemic perennial. 

Rudbeckia occidentalis Nuttall 

Western coneflower. Native perennial. 

Saussurea americana D. C. Eaton 

American sawwort. Native perennial. CNPS List 2.2 

-31-

Scorzonera hispanica Linnaeus 

Black salsify, viper's-grass. Non-native perennial. 

Senecio aronicoides de Candolle 

California groundsel, California butterweed. Native perennial. 

Senecio elegans Linnaeus 

Red-purple ragwort, purple ragwort. Non-native annual. 

Senecio flaccidus Lessing var. douglasii (de Candolle) B. L. Turner & T. M. Barkley 

Thread-leaved ragwort. Native perennial. 

Senecio fremontii Torrey & Gray var. fremontii 

Dwarf mountain groundsel. Native perennial. 

Senecio hydrophiloides Rydberg 

Stout meadow ragwort. Native perennial. 

Senecio hydrophilus Nuttall 

Water ragwort. Native perennial. 

Senecio integerrimus Nuttall var. exaltatus (Nuttall) Cronquist 

Tall western groundsel, Columbia River groundsel. Native perennial. 

Senecio integerrimus Nuttall var. major (Gray) Cronquist 

Bigheaded groundsel. Native perennial. 

Senecio integerrimus Nuttall var. ochroleucus (Gray) Cronquist 

Pale-yellow ragwort. Native perennial. 

Senecio jacobaea Linnaeus 

Tansy ragwort, stinking willie. Non-native perennial. 

Senecio sylvaticus Linnaeus 

Wood groundsel. Non-native annual. 

Senecio triangularis Hooker 

Arrowhead butterweed. Native perennial. 

Senecio vulgaris Linnaeus 

Common groundsel, old-man-in-the-spring. Non-native annual. 

Sericocarpus oregonensis Nuttall var. oregonensis 

White-top-aster. Native perennial. 

Silybum marianum (Linnaeus) Gaertner 

Milk thistle. Non-native annual-perennial. 

Solidago altissima Linnaeus var. altissima 

Late goldenrod. Non-native perennial. 

Solidago lepida de Candolle ssp. fallax (Fernald) Semple 

Meadow groundsel, mountain goldenrod. Native perennial. 

Solidago lepida de Candolle ssp. salebrosa (Piper) Semple 

Meadow groundsel, mountain goldenrod. Native perennial. 

Solidago multiradiata Aiton 

Alpine groundsel, alpine goldenrod. Native perennial. 

Solidago spathulata de Candolle in A. P. de Candolle & A. L. P. P. de Candolle 

Dune goldenrod, coast goldenrod. Native perennial. 

Solidago velutina de Candolle ssp. californica (Nuttall) Semple 

California goldenrod, common goldenrod. Native perennial. 

Soliva sessilis Ruiz & Pavón 

Prickly soliva. Non-native annual. 

Sonchus arvensis Linnaeus ssp. arvensis 

Perennial sow-thistle. Non-native perennial. 

Sonchus asper (Linnaeus) Hill 

Prickly sow thistle, spiny-leaved sow-thistle. Non-native annual. 

Sonchus oleraceus Linnaeus 

Common sow-thistle. Non-native annual. 

Stebbinsoseris heterocarpa (Nuttall) Chambers 

Stebbins' microseris. Native annual. 

Stephanomeria elata Nuttall 

Nuttall’s wire-lettuce. Native annual. 

Stephanomeria exigua Nuttall ssp. coronaria (Greene) Gottlieb 

Small wire-lettuce. Native annual. 

Stephanomeria lactucina Gray 

Large-flowered wire-lettuce. Native perennial. 

Stephanomeria virgata Bentham ssp. pleurocarpa (Greene) Gottlieb 

Tall wire-lettuce. Native annual. 

Stephanomeria virgata Bentham ssp. virgata 

Rod wire-lettuce. Native annual. 

Symphyotrichum ascendens (Lindley) G. L. Nesom 

Western American-aster. Native perennial. 

-32-

Symphyotrichum chilense (Nees) G. L. Nesom 

Pacific-aster. Native perennial. 

Symphyotrichum eatonii (Gray) G. L. Nesom 

Bracted American-aster, Oregon-aster. Native perennial. 

Symphyotrichum foliaceum (de Candolle) G. L. Nesom var. apricum (Gray) G. L. Nesom 

Alpine leafy-bracted-aster. Native perennial. 

Symphyotrichum foliaceum (de Candolle) G. L. Nesom var. parryi (D. C. Eaton) G. L. Nesom 

Parry's leafy-bracted-aster. Native perennial. 

Symphyotrichum frondosum (Nuttall) G. L. Nesom 

Short-rayed alkalai-aster. Native annual. 

Symphyotrichum hendersonii (Fernald) G. L. Nesom 

Lyall’s-aster. Native perennial. 

Symphyotrichum laeve (Linnaeus) Á. Löve & D. Löve var. geyeri (Gray) G. L. Nesom 

Smooth blue American-aster. Native perennial. 

Symphyotrichum lentum (Greene) G. L. Nesom 

Suisun Marsh aster. Native perennial. 

Symphyotrichum novae-angliae (Linnaeus) G. L. Nesom 

New England daisy, Michaelmas-daisy. Native perennial. 

Symphyotrichum spathulatum (Lindley) G. L. Nesom var. intermedium (Gray) G. L. Nesom 

Western mountain-aster. Native perennial. 

Symphyotrichum spathulatum (Lindley) G. L. Nesom var. spathulatum 

Western mountain-aster. Native perennial. 

Symphyotrichum subspicatum (Nees von Esenbeck) G. L. Nesom var. subspicatum 

Leafy-bracted American-aster. Native perennial. 

Tagetes minuta Linnaeus 

Wild marigold, Mexican marigold, Muster-John-Henry. Non-native annual. 

Tanacetum balsamita Linnaeus 

Costmary. Non-native perennial. 

Tanacetum bipinnatum (Linnaeus) Schultz-Bipontinus 

Dune tansy. Native perennial. 

Tanacetum parthenium (Linnaeus) Schultz-Bipontinus 

Feverfew. Non-native perennial. 

Tanacetum vulgare Linnaeus 

Common tansy. Non-native perennial. 

Taraxacum erythrospermum Andrzejowski ex Besser 

Red-seeded dandelion. Non-native perennial. 

Taraxacum officinale Weber ex F. H. Wiggins 

Common dandelion. Non-native perennial. 

Tetradymia canescens de Candolle 

Spineless horsebrush, gray horsebrush. Native shrub. 

Tolpis barbata (Linnaeus) Gaertner 

Umbrella milkwort. Non-native annual. 

Tonestus lyallii (Gray) Nelson 

Lyall's haplopappus. Native perennial. CNPS List 2.3 

Tracyina rostrata Blake 

Beaked tracyina, Indian headdress. Native annual. CNPS List 1B.2 

Tragopogon dubius Scopoli 

Yellow salsify, goat's beard. Non-native annual-perennial. 

Tragopogon porrifolius Linnaeus 

Purple salsify, oyster plant, goat's beard. Non-native perennial. 

Tragopogon pratensis Linnaeus 

Jack-go-to-bed-at-noon, meadow salsify, goat’s beard. Non-native perennial. 

Tripleurospermum perforatum (Merat) M. Lainz 

Scentless false mayweed. Non-native annual. 

Tripleurospermum maritimum (Linnaeus) W. D. J. Koch ssp. maritimum 

Surfing-daisy, false chamomile. Non-native annual-perennial. 

Uropappus lindleyi (de Candolle) Nuttall 

Silver puffs. Native annual. 

Wyethia angustifolia (de Candolle) Nuttall 

Narrow-leaved mule’s ear. Native perennial. 

Wyethia glabra Gray 

Mule’s ear. Native perennial. 

Wyethia helenioides (de Candolle) Nuttall 

Gray mule’s ear. Native perennial. 

Wyethia longicaulis Gray 

Humboldt County wyethia, Humboldt County mule’s ear. Endemic perennial. CNPS List 4.3 

-33-

Wyethia mollis Gray 

Mountain mule’s ear. Native perennial. 

Xanthisma texanum de Candolle in A. P. & A. L. P. P. de Candolle var. drummondii (Torrey & Gray) Semple 

Texas sleepy daisy. Native annual. 

Xanthium spinosum Linnaeus 

Cocklebur, spiny clotbur, Spanish-thistle. Non-native annual. 

Xanthium strumarium Linnaeus 

Cocklebur. Non-native annual. 

CONVOLVULACEAE • Morning-Glory or Bindweed Family 

Calystegia atriplicifolia Hallier f. ssp. buttensis Brummitt 

Butte County morning-glory. Native vine. 

Calystegia collina (Greene) Brummitt ssp. collina 

Coast range bindweed. Native vine. 

Calystegia collina (Greene) Brummitt ssp. oxyphylla Brummitt 

Mt. Saint Helena morning-glory, coast range bindweed. Native vine. CNPS List 4.2 

Calystegia collina (Greene) Brummitt ssp. tridactylosa (Eastwood) Brummitt 

Coast Range bindweed. Endemic vine. 

Calystegia malacophylla (Greene) Munz ssp. malacophylla 

Sierra bindweed. Native vine. 

Calystegia occidentalis (Gray) Brummitt ssp. occidentalis 

Western morning-glory. Native vine. 

Calystegia purpurata (Greene) Brummitt ssp. purpurata 

Bush morning-glory. Native vine. 

Calystegia purpurata (Greene) Brummitt ssp. saxicola (Eastwood) Brummitt 

Bush morning-glory. Native vine. CNPS List 1B.2 

Calystegia sepium (Linnaeus) R. Brown ssp. limnophila (Greene) Brummitt 

Hedge bindweed. Non-native vine. 

Calystegia soldanella (Linnaeus) R. Brown ex Roemer & Schultes 

Beach morning-glory. Native vine. 

Calystegia silvatica (Kitaibel) Grisebach ssp. disjuncta Brummitt 

Short-stalked bindweed. Non-native vine. 

Calystegia subacaulis Hooker & Arnott 

Hillside bindweed. Native vine. 

Convolvulus arvensis Linnaeus 

Wild morning-glory, field bindweed, possession vine. Non-native vine. 

Cressa truxillensis Kunth 

Alkali weed. Native perennial. 

Cuscuta approximata Babington 

Alfalfa dodder. Non-native vine. 

Cuscuta brachycalyx (Yuncker) Yuncker ssp. brachycalyx 

San Joaquin dodder. Native vine. Historic collection. 

Cuscuta californica Hooker & Arnott var. breviflora Engelmann 

Chaparral dodder. Native vine. 

Cuscuta californica Hooker & Arnott var. californica 

California dodder, chaparral dodder. Native vine. 

Cuscuta ceanothii Behr 

Canyon dodder. Native vine. 

Cuscuta cephalanthi Engelmann 

Buttonbush dodder. Native vine. 

Cuscuta howelliana Rubtzoff 

Boggs’ Lake dodder. Native vine. 

Cuscuta indecora Choisy var. indecora 

Big-seed alfalfa dodder, lucerne dodder. Native vine. 

Cuscuta jepsonii Yuncker 

Jepson’s dodder. Endemic vine. 

Cuscuta pentagona Engelmann var. pentagona 

Field dodder. Native vine. 

Cuscuta salina Engelmann var. major Yuncker 

Golden thread. Native vine. 

Cuscuta salina Engelmann var. papillata Yuncker 

Golden thread. Native vine. 

Cuscuta salina Engelmann var. salina 

Marsh dodder, alkali dodder. Native vine. 

Dichondra donnelliana Tharp & Johnston 

Dichondra, California ponys-foot. Native perennial. 

-34-

CORNACEAE • Dogwood Family 

Cornus canadensis Linnaeus 

Bunchberry. Native shrub. 

Cornus glabrata Bentham 

Smooth dogwood, brown dogwood. Native shrub. 

Cornus nuttallii Audubon ex Torrey & Gray 

Pacific dogwood, Nuttall's dogwood, mountain dogwood. Native shrub-tree. 

Cornus sericea Linnaeus ssp. occidentalis (Torrey & Gray) Fosberg 

Western dogwood. Native shrub. 

Cornus sericea Linnaeus ssp. sericea 

Red osier, American dogwood, American dog-berry. Native shrub. 

Cornus sessilis Torrey ex Durand 

Black-fruited dogwood, miner's dogwood. Native shrub. 

CRASSULACEAE • Stonecrop or Orpine Family 

Crassula aquatica (Linnaeus) Schoenlein 

Water pigmy. Native annual. 

Crassula connata (Ruiz Lopez & Pavón) Berger in Engler & Prantl 

var. connata 

Sand pigmy weed. Native annual. 


var. eremica (Jepson) Bywater & Wickens 



var. erectoides Bywater & Wickens 



var. subsimplex (Watson) Bywater & Wickens 


Crassula saginoides (Maximowicz) Bywater & Wickens 

Wrinkled sand pigmy weed. Native annual. 

Crassula solieri (C. Gay) F. Meigen 

Smooth-seeded pigmy weed. Native annual. 

Crassula tillaea Lester-Garland 

Moss pigmy weed. Non-native annual. 

Dudleya caespitosa (Haworth) Britton & Rose 

Sea-lettuce. Native perennial. 

Dudleya cymosa (Lemaire) Britton & Rose ssp. cymosa 

Dudleya, live-forever, hens-and-chickens, sea-lettuce. Native perennial. 

Dudleya farinosa (Lindley) Britton & Rose 

Powdery dudleya, bluff-lettuce. Native perennial. 

Rhodiola integrifolia Rafinesque -Schmaltz ssp. integrifolia 

Ledge stonecrop. Native perennial. 

Sedella leiocarpa H. K. Sharsmith 

Lake Co. mock stonecrop. Endemic annual. CNPS List 1B.1 • Federal: endangered • State: endangered. 

Sedella pentandra H. K. Sharsmith 

Mt. Hamilton mock stonecrop. Native annual. 

Sedella pumila (Bentham) Britton & Rose 

Sierra mock stonecrop. Native annual. 

Sedum divergens Watson 

Cascade stonecrop. Native perennial. CNPS List 2.3 

Sedum lanceolatum Torrey ssp. lanceolatum 

Spear-leaved stonecrop. Native perennial. 

Sedum laxum (Britton) Berger ssp. eastwoodiae (Britton) H. Ohba 

Red Mountain stonecrop. Endemic perennial. CNPS List 1B.2 

Sedum laxum (Britton) Berger ssp. flavidum Denton 

Pale-yellow stonecrop. Endemic perennial. CNPS List 4.3 

Sedum laxum (Britton) Berger ssp. heckneri (Peck) Clausen 

Heckner's stonecrop. Endemic perennial. CNPS List 4.3 

Sedum laxum (Britton) Berger ssp. laxum 

Rose-flowered stonecrop. Endemic perennial. 

Sedum oblanceolatum Clausen 

Applegate's stonecrop. Endemic perennial. CNPS List 1B.1 

Sedum obtusatum Gray ssp. obtusatum 

Sierran stonecrop. Native perennial. 

-35-

Sedum obtusatum Gray ssp. retusum (Rose) Clausen 

Sierran stonecrop. Endemic perennial. 

Sedum oreganum Nuttall 

Oregon stonecrop. Native perennial. 

Sedum oregonense (Watson) Peck 

Oregon stonecrop. Native perennial. 

Sedum paradisum (Denton) Denton 

Canyon Creek stonecrop. Endemic perennial. 1B.3 

Sedum radiatum Watson ssp. radiatum 

Star-fruited stonecrop, coast range stonecrop. Native annual-perennial. 

Sedum spathulifolium Hooker 

Broad-leaved stonecrop. Native perennial. 

Sedum stenopetalum Pursh ssp. stenopetalum 

Explorer's sedum, worm-leaved stonecrop. Native perennial. 

CROSSOSOMATACEAE • Crossosoma Family 

Glossopetalon spinescens Gray var. aridum M. E. Jones 

Nevada greasewood. Native shrub. 

CRUCIFERAE (BRASSICACEAE) • Mustard Family 

Alyssum alyssoides (Linnaeus) Linnaeus 

Sweet alyssum, yellow alyssum. Non-native annual-perennial. 

Arabidopsis thaliana (Linnaeus) Heynhold in F. Holl & G. Heynold 

Thale cress, mouse ear cress. Non-native annual-perennial. 

Arabis aculeolata Greene 

Waldo rock cress. Endemic perennial. CNPS List 2.2 

Arabis blepharophylla Hooker & Arnott 

Coast rock cress. Native perennial. 

Arabis breweri Watson var. austinae (Greene) Rollins 

Brewer’s rock cress. Native perennial. 

Arabis breweri Watson var. breweri 

Brewer's rock cress. Native perennial. 

Arabis x divaricarpa A. Nelson [A. drummondii x A. holboellii] 

Rock cress. Native perennial. 

Arabis hirsuta (Linnaeus) Scopoli var. glabrata Torrey & Gray 

Rock cress. Native perennial. 

Arabis hirsuta (Linnaeus) Scopoli var. pycnocarpa (Hopkins) Rollins 

Cream-flowered rock cress. Native perennial. 

Arabis holboellii Hornemann var. pinetorum Tidestrom 

Holbell’s rock cress. Native perennial. 

Arabis holboellii Hornemann var. retrofracta (Graham) Rydberg 

Holbell’s rock cress. Native perennial. 

Arabis koehleri T. J. Howell var. stipitata Rollins 

Koehler’s rock cress. Endemic perennial. 

Arabis lyallii Watson 

Lyall’s rock cress. Native perennial. 

Arabis macdonaldiana Eastwood 

McDonald's rock cress. Endemic perennial. CNPS List 1B.1 • Federal: endangered • State: endangered. 

Arabis modesta Rollins 

Modest rock cress. Native perennial. CNPS List 4.3 

Arabis oregana Rollins 

Oregon rock cress. Native perennial. CNPS List 4.3 

Arabis platysperma Gray var. howellii (Watson) Jepson 

Howell's rock cress. Native perennial. 

Arabis platysperma Gray var. platysperma 

Broad-seeded rock cress, pioneer rock cress. Native perennial. 

Arabis puberula Nuttall 

Blue Mtn. rock cress. Native perennial. 

Arabis repanda Watson 

Repand rock cress. Native perennial. 

Arabis rigidissima Rollins 

Trinity Mtns. rock cress. Endemic perennial. CNPS List 4.3 

Arabis rollei Rollins 

Klamath River rock cress. Endemic perennial. 

Arabis sparsiflora Nuttall var. arcuata (Nuttall) Rollins 

Elegant rock cress. Native perennial. 

-36-

Arabis sparsiflora Nuttall var. sparsiflora 


Arabis sparsiflora Nuttall var. subvillosa Watson 


Arabis subpinnatifida Watson 

Klamath rock cress, two-way rock cress. Endemic perennial. 

Arabis suffrutescens Watson var. horizontalis (Greene) Rollins 

Woody rock cress, purple rock cress. Native perennial. 

Arabis suffrutescens Watson var. suffrutescens 

Woody rock cress, purple rock cress. Native perennial. 

Armoracia rusticana Gaertner, Meyer, & Schreber 

Horseradish. Non-native perennial. Escaped crop. Doubtfully persisting. 

Athysanus pusillus (Hooker) Greene 

Common sand weed. Native annual. 

Aubrieta deltoidea (Linnaeus) de Candolle 

Lilac bush. Non-native perennial. Doubtfully persisting. 

Barbarea orthoceras von Ledebour 

Winter cress. Native perennial. 

Barbarea verna (P. Miller) Ascherson 

Winter cress, scurvy-grass. Non-native perennial. 

Barbarea vulgaris R. Brown 

Winter cress. Non-native perennial. 

Boechera breweri (Watson) Al-Shehbaz ssp. shastensis Windham & Al-Shehbaz 

Brewer’s rockcress. Native perennial. More appropriate combination in Arabis not yet published. 

Boechera serpenticola Windham & Al-Shehbaz 

Endemic perennial. Combination under Arabis not yet published. 

Brassica juncea (Linnaeus) Czernajew 

Indian mustard, Chinese mustard. Non-native annual. 

Brassica nigra (Linnaeus) Koch 

Black mustard. Non-native annual. 

Brassica rapa Linnaeus 

Black mustard. Non-native annual-perennial. 

Cakile edentula (Bigelow) Hooker 

California sea rocket. Non-native annual. 

Cakile maritima Scopoli 

Sea rocket. Non-native annual. 

Camelina microcarpa Andrzejowski 

False flax, Dutch false flax. Non-native annual. 

Capsella bursa-pastoris (Linnaeus) Medikus 

Shepherd's purse. Non-native annual. 

Cardamine angulata Hooker 

Seaside bitter-cress, wood-cress. Native perennial. 

Cardamine bellidifolia Linnaeus var. pachyphylla Coville & Leiberg 

Alpine bitter-cress. Native perennial. 

Cardamine breweri Watson var. breweri 

Brewer's bitter-cress, Sierra-cress. Native perennial. 

Cardamine breweri Watson var. orbicularis (Greene) Detling 

Brewer's bitter-cress. Native perennial. 

Cardamine californica (Nuttall) Greene 

Milk maids. Native perennial. 

Cardamine californica (Nuttall) Greene var. californica 

California toothwort. Native perennial. 

Cardamine californica (Nuttall) Greene var. cardiophylla (Greene) Rollins 


Cardamine californica (Nuttall) Greene var. integrifolia (Torrey & Gray) Rollins 


Cardamine californica (Nuttall) Greene var. sinuata (Greene) O. E. Schulz 


Cardamine cordifolia Gray var. lyallii (Watson) Nelson & Macbride 

Lyall's bitter-cress. Native perennial. 

Cardamine hirsuta Linnaeus 

Hairy bitter-cress. Non-native annual. 

Cardamine nuttallii Greene var. covilleana (O. E. Schulz) Rollins 

Nuttall’s toothwort. Native perennial. 

Cardamine nuttallii Greene var. dissecta (O. E. Schulz) Rollins 

Nuttall’s toothwort. Native perennial. 

-37-

Cardamine nuttallii Greene var. gemmata (Greene) Rollins 

Yellow-tubered toothwort. Endemic perennial. CNPS List 1B.3 

Cardamine nuttallii Greene var. nuttallii 

Nuttall's toothwort. Native perennial. 

Cardamine occidentalis (Robinson) Howell var. occidentalis 

Big western bitter-cress. Native perennial. 

Cardamine oligosperma Nuttall in Torrey & Gray 

Few-seeded bitter-cress, hill cress. Native annual-perennial. 

Cardamine pachystigma (Watson) Rollins var. dissectifolia (Detling) Rollins 

Dissected-leaved toothwort. Native perennial. CNPS List 3 

Cardamine pachystigma (Watson) Rollins var. pachystigma 

Stout-beaked toothwort. Native perennial. 

Cardaria chalapensis (Linnaeus) Handel-Mazzetti 

White top, lens-podded hoary-cress. Non-native perennial. 

Cardaria draba (Linnaeus) Desvaux 

Heart-podded hoary-cress. Non-native perennial. 

Cardaria pubescens (C. A. Meyer) Jarmolenko 

Hairy white top, hoary-cress. Non-native perennial. 

Cochlearia officinalis Linnaeus var. arctica (Schlectendal ex de Candolle) Gelert ex Anderson & Hesselman 

Spoon wort. Native perennial. CNPS List 2.3 

Coincya monensis (Linneaus) Greuter & Burdet var. recurvata (Allioni) Leadley 

Star mustard, wallflower-cabbage. Non-native annual. Persisting? 

Coronopus didymus (Linnaeus) J. E. Smith 

Wart cress, lesser wart cress. Non-native annual. 

Cusickiella douglasii (Gray) Rollins 

Alkali cusickiella. Native perennial. 

Descurainia californica (Gray) O. E. Schulz in Engler 

Sierra tansy mustard. Native annual-perennial. 

Descurainia incana (Bernhardi ex Fischer & C. A. Meyer) Dorn 

Mountain tansy mustard. Native annual-perennial. 

Descurainia incisa (Gray) Britton ssp. filipes (Gray) Rollins 

Mountain tansy mustard. Native annual. 

Descurainia incisa (Gray) Britton ssp. incisa 

Mountain tansy mustard. Native annual. 

Descurainia sophia (Linnaeus) Webb ex Prantl 

Flix weed. Non-native annual-perennial. 

Diplotaxis muralis (Linnaeus) de Candolle 

Wall rocket. Non-native annual-perennial. 

Draba albertina Greene 

Alaska whitlow-grass. Native perennial. 

Draba aureola Watson 

Golden draba, Mt. Lassen draba, vulcan draba. Native perennial. CNPS List 1B.3 

Draba carnosula O. E. Schulz in Engler 

Mt. Eddy draba. Endemic perennial. CNPS List 1B.3 

Draba howellii Watson 

Howell's draba, rosette draba. Endemic perennial. CNPS List 4.3 

Draba nemorosa Linnaeus 

Wood whitlow-grass. Non-native annual. 

Draba pterosperma Payson 

Wing-seeded draba. Endemic perennial. 

Draba verna Linnaeus 

Shad flower, vernal whitlow-grass, whitlow-grass. Non-native annual. 

Erysimum capitatum (Douglas ex Hooker) Greene ssp. capitatum 

Douglas' wallflower, western wallflower. Native perennial. 

Erysimum capitatum (Douglas) Greene ssp. perenne (Coville) R. A. Price 

Sierra wallflower. Native perennial. 

Erysimum concinnum Eastwood 

Coast wallflower. Native perennial. 

Erysimum franciscanum Rossbach 

San Francisco wallflower. Native perennial. 

Erysimum menziesii (Hooker) Wettstein 

Menzies' wallflower. Native perennial. CNPS List 1B.1 • Federal: endangered • State: endangered. 

Guillenia flavescens (Hooker) Greene 

Yellow mustard. Native annual. 

Guillenia lasiophylla (Hooker & Arnott) Greene 

California mustard. Native annual. 

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Hesperis matronalis Linnaeus 

Dame's rocket. Non-native perennial. 

Heterodraba unilateralis (Jones) Greene 

Ladies’ tongue mustard. Native annual. 

Hirschfeldia incana (Linnaeus) Lagreze-Fossat 

Hoary mustard. Non-native annual-perennial. 

Hornungia procumbens (Linnaeus) Hayek 

Prostrate hutchinsia, oval purse. Native annual. 

Idahoa scapigera (Hooker) Nelson & Macbride 

Flat pod. Native annual. 

Ionopsidium acaule (Desfontaines) Reichenbach 

Violet cress. Non-native annual. Doubtfully persisting. 

Isatis tinctoria Linnaeus 

Woad, dyer's woad. Non-native annual-perennial. 

Lepidium campestre (Linnaeus) R. Brown 

Poor man's pepper, English pepper-grass, cow cress. Non-native annual. 

Lepidium densiflorum Schrader var. macrocarpum G. Mulligan 

Big-seeded pepper weed. Native perennial. 

Lepidium densiflorum Schrader var. pubicarpum (Nelson) Thellung 

Baby-seeded pepper weed. Native annual. 

Lepidium didymum Linnaeus 

Wart cress, swine cress. Non-native annual. 

Lepidium dictyotum Gray var. acutidens Gray 

Alkali pepper weed. Native annual. 

Lepidium dictyotum Gray var. dictyotum 

Alkali pepper weed. Native annual. 

Lepidium draba Linnaeus 

Heart-podded hoary cress. Non-native perennial. 

Lepidium lasiocarpum Nuttall 

Sand pepper-grass, hairy-pod pepper-grass. Native annual. 

Lepidium latifolium Linnaeus var. latifolium 

Broad-leaved pepper weed. Non-native perennial. 

Lepidium latipes Hooker var. latipes 

Dwarf pepper-grass. Native annual. 

Lepidium montanum Nuttall 

Mountain pepper-grass. Native perennial. 

Lepidium nitidum Nuttall 

Common pepper-grass, shining pepper-grass. Native annual. 

Lepidium oblongum Small var. oblongum 

Veiny pepper wort. Native annual-perennial. 

Lepidium oxycarpum Torrey & Gray 

Sharp-podded pepper-grass. Native annual. 

Lepidium perfoliatum Linnaeus 

Shield cress, round-leaved pepper-grass. Non-native annual-perennial. 

Lepidium strictum (Watson) Rattan 

Pepper-grass. Native annual. 

Lepidium virginicum Linnaeus var. menziesii (de Candolle) Thellung 


Lepidium virginicum Linnaeus var. pubescens (Greene) C. L. Hitchcock 


Lobularia maritima (Linnaeus) Desvaux 

Sweet-alyssum. Non-native annual-perennial. 

Lunaria annua Linnaeus 

Moneywort. Non-native annual-perennial. 

Mathiola incana (Linnaeus) R. Brown 

Stock. Non-native perennial. 

Nasturtium officinale W. T. Aiton 

Water cress. Native perennial. 

Noccaea fendleri (Gray) Holub ssp. californica (Watson) Al-Shehbaz & M. Koch 

Kneeland pennycress. Endemic perennial. CNPS List 1B.1 • Federal: endangered. 

Noccaea montana (Linnaeus) F. K. Meyer var. montana 

Alpine pennycress. Native perennial. 

Phoenicaulis cheiranthoides Nuttall in Torrey & Gray 

Dagger pod. Native perennial. 

Physaria occidentalis (Watson) O’Kane & Al-Shehbaz ssp. occidentalis 

Western bladderpod. Native annual-perennial. 

-39-

Planodes virginica (Linnaeus) Greene 

Virginica rock cress, winged rock cress. Native annual-perennial. 

Raphanus raphanistrum Linnaeus 

Jointed wild radish, jointed charlock. Non-native annual-perennial. 

Raphanus sativus Linnaeus 

Wild radish. Non-native annual-perennial. 

Rorippa columbiae (Robinson) Suksdorf ex T. J. Howell 

Columbia yellow cress. Native perennial. CNPS List 1B.2 

Rorippa curvipes Greene var. curvipes 

Blunt-leaved Columbia yellow cress. Native annual-perennial. 

Rorippa curvipes Greene var. truncata (Jepson) Rollins 

Yellow cress. Native annual-perennial. 

Rorippa curvisiliqua (Hooker) Bessey ex Britton 

Western yellow cress. Native annual-perennial. 

Rorippa palustris (Linnaeus) Besser 

Marsh cress, yellow cress. Native annual-perennial. 

Sinapis alba Linnaeus 

White charlock. Non-native annual. 

Sinapis arvensis Linnaeus 

Field charlock. Non-native annual. 

Sisymbrium altissimum Linnaeus 

Tumble mustard, Jim Hill mustard. Non-native annual. 

Sisymbrium officinale (Linnaeus) Scopoli 

Hedge mustard. Non-native annual. 

Sisymbrium orientale Linnaeus 

Indian hedge mustard. Non-native annual. 

Streptanthus barbatus Watson 

Bearded jewel flower. Endemic perennial. 

Streptanthus barbiger Greene 

Bearded jewel flower. Native annual. CNPS List 4.2 

Streptanthus batrachopus J. Morrison 

Tamalpais jewelweed. Native annual. 

Streptanthus brachiatus F. W. Hoffman ssp. brachiatus 

Socrates Mine jewel flower. Native perennial. 

Streptanthus brachiatus F. W. Hoffman ssp. hoffmanii Dolan & LaPre 

Hoffman's jewel flower, Socrates Mine jewel flower. Native perennial. CNPS List 1B.2 

Streptanthus breweri Gray 

Brewer's jewel flower. Native annual. 

Streptanthus drepanoides Kruckeberg & Morrison 

Sickle-fruited jewel flower. Native annual. CNPS List 4.3 

Streptanthus glandulosus Hooker ssp. glandulosus 

Bristly jewel flower. Native annual. 

Streptanthus glandulosus Hooker ssp. secundus (Greene) Kruckeberg 

Secund jewel flower. Native annual. 

Streptanthus hesperidus Jepson 

Serpentine jewel flower. Native annual. 

Streptanthus howellii Watson 

Howell's jewel flower. Native perennial. CNPS List 1B.2 

Streptanthus morrisonii F. W. Hoffman ssp. elatus F. W. Hoffman 

Three peaks jewel flower. Native perennial. CNPS List 1B.2 

Streptanthus morrisonii F. W. Hoffman ssp. kruckebergii Dolan & LaPre 

Kruckeberg's jewel flower. Native perennial. CNPS List 1B.2 

Streptanthus oblanceolatum T. W. Nelson & J. P. Nelson 

Endemic perennial. 

Streptanthus tortuosus Kellogg 

Mountain jewel flower. Native annual-perennial. 

Streptanthus vernalis O’Donnell & Dolan 

Three Peak’s jewel flower. Endemic annual. 

Streptanthus vimineus (Greene) Al-Shehbaz & D. W. Taylor 

Greene’s jewel flower. Native annual. 

Thelypodium brachycarpum Torrey 

Short-podded thelypodium. Native perennial. CNPS List 4.2 

Thelypodium flexuosum Robinson 

Perennial thelypodium. Native perennial. 

Thlaspi arvense Linnaeus 

Penny cress, field penny cress, fan weed. Non-native annual. 

-40-

Thysanocarpus curvipes Hooker var. curvipes 

Fringe pod, hairy fringe pod. Native annual. 

Thysanocarpus elegans Fischer & Meyer 

Fringe pod. Native annual. 

Thysanocarpus laciniatus Nuttall ex Torrey & Gray var. laciniatus 

Southern lace pod. Native annual. 

Thysanocarpus radians Bentham 

Spoke pod, ribbed fringe pod. Native annual. 

Tropidocarpum gracile Hooker var. gracile 

Dobie pod. Native annual. 

Turritis glabra Linnaeus 

Tower mustard. Native annual-perennial. Better placed in to Arabis? 

CUCURBITACEAE • Gourd, Pumpkin, or Squash Family 

Marah fabaceus (Naudin) Greene var. agrestis (Greene) Stocking 

California manroot, valley man root. Native vine. 

Marah fabaceus (Naudin) Greene var. fabaceus 

California manroot, valley man root. Native vine. 

Marah oreganus (Torrey & Gray) T. J. Howell 

Wild-cucumber, coast or hill man root, big root. Native vine. 

Marah watsonii (Cogniaux) Greene 

Taw man root. Native vine. 

CYPERACEAE • Sedge Family 

Bolboschoenus fluviatilis (Torrey) Soják 

River bulrush. Native perennial. 

Bolboschoenus maritimus (Linnaeus) Palla in W. D. J. Koch et al. ssp. paludosus (A. Nelson) T. Koyama 

Salt-marsh bulrush, alkali bulrush, bayonet-grass. Native perennial. 

Bolboschoenus robustus (Pursh) Soják 

Seacoast bulrush, seaside club-rush. Native perennial. 

Bulbostylis capillaris (Linnaeus) C. B. Clarke 

Dense-tufted hair sedge. Native perennial. 

Carex abrupta Mackenzie 

Abruptly-beaked sedge. Native perennial. 

Carex amplifolia Boott 

Ample-leaved sedge. Native perennial. 

Carex angustata Boott 

Wide-fruited sedge. Native perennial. 

Carex aquatilis Wahlenberg var. aquatilis 

Water sedge. Native perennial. 

Carex aquatilis Wahlenberg var. dives (Holm) L. Standley 

Water sedge. Native perennial. 

Carex arcta Boott 

Northern clustered sedge. Native perennial. CNPS List 2.2 

Carex athrostachya Olney 

Slender-beaked sedge. Native perennial. 

Carex aurea Nuttall 

Golden-fruited sedge. Native perennial. 

Carex barbarae Dewey 

Santa Barbara sedge. Native perennial. 

Carex bolanderi Olney 

Bolander's sedge. Native perennial. 

Carex brainerdii Mackenzie 

Brainerd's sedge. Native perennial. 

Carex brevicaulis Mackenzie 

Short-stemmed sedge. Native perennial. 

Carex breweri Boott var. breweri 

Brewer's sedge. Native perennial. 

Carex buxbaumii Wahlenberg 

Buxbaum's sedge. Native perennial. CNPS List 4.2 

Carex californica Bailey 

California sedge. Native perennial. CNPS List 2.3 

Carex canescens Linnaeus 

Silvery sedge, hoary sedge. Native perennial. 

Carex comosa Boott 

Bristly sedge. Native perennial. CNPS List 2.1 

-41-

Carex concinnoides Mackenzie 

Northwestern sedge. Native perennial. 

Carex cusickii Mackenzie 

Cusick's sedge. Native perennial. 

Carex densa Bailey 

Dense sedge. Native perennial. 

Carex deweyana Schweinfurth ssp. leptopoda (Mackenzie) Calder & Taylor 

Dewey’s sedge. Native perennial. 

Carex diandra Schrank 

Lesser-panicled sedge. Native perennial. 

Carex douglasii Boott 

Douglas' sedge. Native perennial. 

Carex dudleyi Mackenzie 

Dudley's sedge. Native perennial. 

Carex echinata Murray ssp. echinata 

Star sedge. Native perennial. 

Carex echinata Murray ssp. phyllomanica (W. Boott) A. A. Reznicek 

Star sedge. Native perennial. 

Carex feta Bailey 

Green-sheathed sedge. Native perennial. 

Carex fissuricola Mackenzie 

Canyon sedge. Native perennial. 

Carex fracta Mackenzie 

Fragile-sheathed sedge. Native perennial. 

Carex garberi Fernald 

Elk sedge. Native perennial. 

Carex geyeri Boott 

Geyer's sedge, elk sedge. Native perennial. CNPS List 4.2 

Carex globosa Boott 

Round-fruited sedge. Native perennial. 

Carex gracilior Mackenzie 

Slender sedge. Native perennial. 

Carex gynodynama Olney 

Olney's hairy sedge. Native perennial. 

Carex halliana Bailey 

Hall's sedge. Native perennial. CNPS List 2.3 

Carex harfordii Mackenzie 

Harford's sedge. Native perennial. 

Carex hassei Bailey 

Hasse's sedge. Native perennial. 

Carex hendersonii Bailey 

Henderson's sedge. Native perennial. 

Carex heteroneura W. Boott 

Various-nerved sedge. Native perennial. 

Carex hirtissima W. Boott 

Hairy Sierra sedge. Native perennial. 

Carex hoodii Boott 

Hood's sedge. Native perennial. 

Carex hystricina Muhlenberg ex von Willdenow 

Porcupine sedge, bottlebrush sedge. Native perennial. CNPS List 2.1 

Carex inops Bailey ssp. inops 

Long-stoloned sedge. Native perennial. CNPS List 3.3 

Carex integra Mackenzie 

Smooth-beaked sedge. Native perennial. 

Carex interior Bailey 

Inland sedge. Native perennial. 

Carex jonesii Bailey 

Jones' sedge. Native perennial. 

Carex klamathensis B. L. Wilson & L. P. Janeway 

Klamath sedge. Endemic perennial. 

Carex laeviculmis Meinshausen 

Smooth-stemmed sedge. Native perennial. 

Carex lanuginosa Michaux 

Woolly sedge. Native perennial. 

Carex lemmonii W. Boott 

Lemmon's sedge. Native perennial. 

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Carex lenticularis Michaux var. impressa (Bailey) L. Standley 

Lake shore sedge. Native perennial. 

Carex lenticularis Michaux var. limnophila (Holm) Cronquist 


Carex lenticularis Michaux var. lipocarpa (Holm) L. Standley 


Carex leporinella Mackenzie 

Sierra hare. Native perennial. 

Carex leptalea Wahlenberg 

Bristle-stalked sedge. Native perennial. CNPS List 2.2 

Carex livida (Wahlenberg) von Willdenow 

Livid sedge, pale sedge. Native perennial. CNPS List 1A 

Carex luzulifolia W. Boott 

Luzula-leaved sedge. Native perennial. 

Carex luzulina Olney var. ablata (Bailey) F. J. Hermann 

Luzula-like sedge. Native perennial. 

Carex luzulina Olney var. luzulina 

Luzula-like sedge. Native perennial. 

Carex lyngbyei Horneman 

Lyngby's sedge. Native perennial. CNPS List 2.2 

Carex mariposana Bailey ex Mackenzie 

Mariposa sedge. Native perennial. 

Carex mendocinensis Olney 

Mendocino sedge. Native perennial. 

Carex mertensii Prescott 

Merten's sedge. Native perennial. 

Carex microptera Mackenzie 

Small-winged sedge. Native perennial. 

Carex multicaulis Bailey 

Many-stemmed sedge. Native perennial. 

Carex multicostata Mackenzie 

Many-ribbed sedge. Native perennial. 

Carex nebrascensis Dewey 

Nebraska sedge. Native perennial. 

Carex nervina Bailey 

Sierra nerved sedge. Native perennial. 

Carex neurophora Mackenzie 

Alpine nerved sedge. Native perennial. 

Carex nigricans C. A. Meyer 

Blackish sedge. Native perennial. 

Carex nudata W. Boott 

Torrent sedge. Native perennial. 

Carex obnupta Bailey 

Slough sedge. Native perennial. 

Carex ovalis Goodding 

Egg-bracted sedge. Native perennial. 

Carex pachystachya von Chamisso ex Steudel 

Thick-headed sedge. Native perennial. 

Carex pansa Bailey 

Sand dune sedge. Native perennial. 

Carex petasata Dewey 

Liddon's sedge. Native perennial. 

Carex polystachya Swartz ex Wahlenberg 

Caribbean sedge. Native perennial. 

Carex praegracilis W. Boott 

Clustered field sedge. Native perennial. 

Carex praticola Rydberg 

Meadow sedge. Native perennial. CNPS List 2.2 

Carex preslii Steudel 

Presl's sedge. Native perennial. 

Carex raynoldsii Dewey 

Raynold's sedge. Native perennial. 

Carex rossii Boott ex Hooker 

Ross' sedge. Native perennial. 

Carex rostrata Stokes ex Withering 

Beaked sedge. Native perennial. 

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Carex saliniformis Mackenzie 

Deceiving sedge. Native perennial. CNPS List 1B.2 

Carex scabriuscula Mackenzie 

Siskiyou sedge. Native perennial. 

Carex schottii Dewey 

Schott’s sedge. Native perennial. 

Carex scopulorum Holm var. bracteosa (Bailey) F. J. Hermann 

Holm's Rocky Mtn. sedge. Native perennial. 

Carex serpenticola P. F. Zika 

Serpentine sedge. Endemic perennial. 

Carex serratodens W. Boott 

Two-toothed sedge. Native perennial. 

Carex simulata Mackenzie 

Short-beaked sedge, analogue sedge. Native perennial. 

Carex specifica Bailey 

Narrow-fruited sedge. Native perennial. 

Carex spectabilis Dewey 

Showy sedge. Native perennial. 

Carex stipata Muhlenberg ex von Willdenow var. stipata 

Awl-fruited sedge. Native perennial. 

Carex straminiformis Bailey 

Mt. Shasta sedge. Native perennial. 

Carex subbracteata Mackenzie 

Small-bracted sedge. Native perennial. 

Carex subfusca W. Boott 

Rusty sedge. Native perennial. 

Carex tumulicola Mackenzie 

Foothill sedge. Native perennial. 

Carex unilateralis Mackenzie 

One-sided sedge. Native perennial. 

Carex utriculata W. Boott 

Northwest Territory sedge. Native perennial. 

Carex vernacula Bailey 

Vernacular sedge. Native perennial. 

Carex vesicaria Linnaeus var. major Boott 

Lesser bladder sedge, blister sedge. Native perennial. 

Carex vesicaria Linnaeus var. vesicaria 

Lesser bladder sedge, blister sedge. Native perennial. 

Carex viridula Michaux ssp. viridula 

Green sedge. Native perennial. CNPS List 2.3 

Carex vulpinoidea Michaux 

Fox sedge. Native perennial. CNPS List 2.2 

Carex whitneyi Olney 

Whitney's sedge. Native perennial. 

Cyperus acuminatus Torrey & Hooker 

Short-pointed flat sedge. Native annual. 

Cyperus bipartitus Torrey 

Slender flat sedge. Native annual. 

Cyperus eragrostis Lamarck 

Umbrella sedge, flat sedge. Native perennial. 

Cyperus erythrorhizos Muhlenberg 

Red-rooted flat sedge. Native annual. 

Cyperus esculentus Linnaeus 

Yellow nutgrass, yellow nutsedge, chufa. Native perennial. 

Cyperus niger Ruiz López & Pavón 

Black flat sedge. Native perennial. 

Cyperus squarrosus Linnaeus 

Flat sedge. Native annual. 

Cyperus strigosus Linnaeus 

Straw-colored flat sedge. Native perennial. 

Dulichium arundinaceum (Linnaeus) Britton var. arundinaceum 

Three-way sedge. Native perennial. 

Eleocharis acicularis (Linnaeus) Roemer & Schultes var. acicularis 

Needle spike-rush. Native perennial. 

Eleocharis bella (Piper) Svenson 

Pretty spike-rush. Native annual. 

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Eleocharis bolanderi Gray 

Bolander's spike-rush. Native perennial. 

Eleocharis decumbens C. B. Clarke 

Decumbent spike-rush. Native perennial. 

Eleocharis englemannii Steudel 

Englemann’s spike-rush. Native perennial. 

Eleocharis macrostachya Britton in Small 

Pale spike-rush. Native perennial. 

Eleocharis montevidensis Kunth 

Spike-rush. Native perennial. 

Eleocharis obtusa (von Willdenow) Schultes 

Blunt spike-rush. Native annual. 

Eleocharis pachycarpa Desvaux in C. Gay 

Black sand spike-rush. Non-native perennial. 

Eleocharis palustris (Linnaeus) Roemer & Schultes in J. J. Roemer et al. var. palustris 

Common spike-rush. Native perennial. 

Eleocharis parishii Britton 

Parish's spike-rush. Native perennial. 

Eleocharis parvula (Roemer & Schultes) Link ex Buffon & Fingerhuth 

Small spike-rush. Native perennial. CNPS List 4.3 

Eleocharis quinqueflora (Hartmann) O. Schwartz 

Few-flowered spike-rush. Native perennial. 

Eleocharis radicans (Poiret) Kunth 

Rooted spike-rush. Native perennial. 

Eleocharis suksdorfiana Beauverd 

Suksdorf’s spike-rush. Native perennial. 

Eriophorum crinigerum (Gray) Beetle 

Fringed cotton-grass. Native perennial. 

Eriophorum gracile Koch 

Slender cotton-grass, cotton sedge. Native perennial. 

Isolepis carinata Hooker & Arnott ex Torrey 

Keeled lateral bulrush. Native annual. 

Isolepis cernua (Vahl) Roemer & Schultes in J. J. Roemer et al. 

Low lateral bulrush. Native annual. 

Isolepis setacea (Linnaeus) R. Brown 

Bristle-leaf lateral bulrush. Native perennial. 

Lipocarpha aristulata (Coville) G. C. Tucker 

Awned half-chaff sedge. Native annual. 

Lipocarpha micrantha (M. Vahl) G. C. Tucker 

Small-flowered half-chaff sedge. Native annual. 

Lipocarpha occidentalis (Gray) G. C. Tucker 

Western small-flowered half-chaff sedge. Native annual. 

Rhynchospora alba (Linnaeus) Vahl 

White beaked-rush. Native perennial. CNPS List 2.2 

Rhynchospora capitellata (Michaux) M. Vahl 

Brownish beaked-rush. Native perennial. CNPS List 2.2 

Rhynchospora globularis (Chapman) Small var. globularis 

Round-headed beaked-rush. Native perennial. 

Schoenoplectus acutus (Muhlenberg ex Bigelow) A. & D. Löve var. occidentalis (Watson) S. G. Smith 

Common tule, hardstem bulrush. Native perennial. 

Schoenoplectus americanus (Persoon) Volkart ex Schinz & R. Keller 

Three-square, common three-square. Native perennial. 

Schoenoplectus californicus (C. A. Meyer) Soják 

California bulrush, California tule, California club-rush. Native perennial. 

Schoenoplectus mucronatus (Linnaeus) Palla 

Bog club-rush. Non-native perennial. 

Schoenoplectus pungens (Vahl) Palla 

Three-square. Native perennial. 

Schoenoplectus subterminalis (Torrey) Soják 

Water bulrush. Native perennial. 

Schoenoplectus tabernaemontani (K. C. Gmelin) Palla 

Soft-stemmed bulrush. Native perennial. 

Scirpus congdonii Britton 

Congdon's bulrush. Native perennial. 

Scirpus diffusus Schuyler 

Diffuse bulrush, umbrella bulrush. Native perennial. 

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Scirpus microcarpus J. Presl & C. Presl in C. Presl 

Small-fruited bulrush, panicled sedge, red-tinged bulrush. Native perennial. 

Scirpus pendulous Muhlenberg 

Rufous bulrush. Native perennial. 

DATISCACEAE • Datisca Family 

Datisca glomerata (Presl) Baillon 

Durango root. Native perennial. 

DIPSACACEAE • Teasel Family 

Dipsacus fullonum Linnaeus 

Fuller's teasel. Non-native annual-perennial. 

Dipsacus sativus (Linnaeus) Honckeny 

Common teasel, Indian teasel. Non-native annual-perennial. 

Scabiosa atropurpurea Linnaeus 

Mourning bride. Non-native annual-perennial. 

DROSERACEAE • Sundew Family 

Drosera aliciae Raymond & Hamet 

South African sundew. Non-native perennial. 

Drosera anglica Hudson 

English sundew. Native perennial. CNPS List 2.3 

Drosera capensis Linnaeus 

Cape sundew. Non-native perennial. 

Drosera rotundifolia Linnaeus 

Round-leaved sundew. Native perennial. 

EBENACEAE • Ebony Family 

Diospyros virginiana Linnaeus var. virginiana 

American persimmon. Non-native tree. Doubtfully spontaneous. 

ELAEAGNACEAE • Oleaster Family 

Shepherdia canadensis (Linnaeus) Nuttall 

Canadian buffalo berry. Native shrub. 

ELATINACEAE • Waterwort Family 

Elatine brachysperma Gray 

Short-seeded waterwort, yerba fango. Native annual-perennial. 

Elatine californica Gray 

California waterwort, yerba estera. Native annual-perennial. 

Elatine heterandra Mason 

Mosquito waterwort. Native annual-perennial. 

Elatine rubella Rydberg 

Southwestern waterwort. Native annual-perennial. 

ERICACEAE • Heath Family 

Allotropa virgata Torrey & Gray ex Gray 

Sugar stick. Native perennial. 

Arbutus menziesii Pursh 

Madrone, Pacific madrone, madroño. Native shrub-tree. 

Arctostaphylos canescens Eastwood ssp. canescens 

Hoary manzanita. Native shrub. 

Arctostaphylos canescens Eastwood ssp. sonomensis (Eastwood) P. V. Wells 

Sonoma manzanita. Native shrub. CNPS List 1B.2 

Arctostaphylos x cinerea T. J. Howell [A. canescens x A. viscida] 

Waldo manzanita, Del Norte manzanita. Endemic shrub. 

Arctostaphylos columbiana Piper 

Columbia manzanita, hairy manzanita. Native shrub. 

Arctostaphylos densiflora M. S. Baker 

Sonoma manzanita. Non-native shrub. Naturalized ornamental. 

Arctostaphylos glandulosa Eastwood ssp. glandulosa 

Eastwood's manzanita, crown manzanita. Native shrub. 

Arctostaphylos hispidula T. J. Howell 

Gasquet manzanita, Howell's manzanita. Native shrub. CNPS List 4.2 

Arctostaphylos hookeri G. Don var. hookeri 

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Hooker’s manzanita. Native shrub. 

Arctostaphylos x jepsonii Eastwood [A. patula x A. viscida] 

Jepson’s manzanita. Native shrub. 

Arctostaphylos klamathensis Edwards, Keeler-Wolf, & Knight 

Klamath manzanita. Endemic shrub. CNPS List 1B.2 

Arctostaphylos malloryi (Knight & Gankin) P. V. Wells 

Mallory's manzanita. Native shrub. CNPS List 4.3 

Arctostaphylos manzanita Parry ssp. elegans (Eastwood) P. V. Wells 

Konacti manzanita. Native shrub. CNPS List 1B.3 

Arctostaphylos manzanita Parry ssp. glaucescens P. V. Wells 

White-leaved manzanita. Native shrub. 

Arctostaphylos manzanita Parry ssp. manzanita 

Common manzanita. Native shrub. 

Arctostaphylos manzanita Parry ssp. roofii (Gankin) P. V. Wells 

Roof's manzanita. Endemic shrub. 

Arctostaphylos manzanita Parry ssp. wieslanderi P. V. Wells 

Wieslander’s manzanita. Native shrub. 

Arctostaphylos x media Greene [A. columbiana x A. uva-ursi] 

Native shrub. 

Arctostaphylos nevadensis Gray ssp. knightii (Gankin) P. V. Wells 

Knight’s manzanita. Native shrub. 

Arctostaphylos nevadensis Gray ssp. nevadensis 

Pinemat, pinemat manzanita. Native shrub. 

Arctostaphylos nortensis (P. V. Wells) P. V. Wells 

Del Norte manzanita. Endemic shrub. CNPS List 4.3 

Arctostaphylos nummularia Gray ssp. mendocinoensis (P. V. Wells) Parker, Vasey, & Keeley 

Fort Bragg manzanita. Native shrub. 

Arctostaphylos nummularia Gray ssp. nummularia 

Fort Bragg manzanita, fire manzanita, glossy-leaf manzanita 

Arctostaphylos x parvifolia T. J. Howell [A. glandulosa x A. nevadensis] 

Native shrub. 

Arctostaphylos patula Greene 

Greenleaf manzanita, Greene's manzanita, snowbrush. Native shrub. 

Arctostaphylos stanfordiana Parry ssp. raichei Knight 

Hopland manzanita, Raichei’s manzanita. Endemic shrub. CNPS List 1B.1 

Arctostaphylos stanfordiana Parry ssp. stanfordiana 

Stanford's manzanita, Myacoma manzanita. Native shrub. 

Arctostaphylos uva-ursi (Linnaeus) Sprengle 

Bearberry, kinnikinnick, sand berry. Native shrub. 

Arctostaphylos viscida Parry ssp. pulchella (T. J. Howell) P. V. Wells 

Coast range whiteleaf manzanita. Native shrub. 

Arctostaphylos viscida Parry ssp. viscida 

Sierran whiteleaf manzanita. Native shrub. 

Cassiope mertensiana (Bongard) D. Don ssp. mertensiana 

Western mountain-heather, love heather, white heather. Native shrub. 

Chimaphila menziesii (R. Brown ex D. Don) Sprengel 

Pipsissiwa, little prince's-pine. Native perennial. 

Chimaphila umbellata (Linnaeus) Barton ssp. occidentalis (Rydberg) Hultén 

Western prince's-pine, pipsissiwa. Native perennial. 

Empetrum nigrum Linnaeus ssp. hermaphroditum (Lange ex Hagerup) Böcher 

Black crowberry. Native shrub. CNPS List 2.2 

Erica lusitanica Rudolphi 

Spanish or Portuguese heath, heather. Non-native shrub. 

Gaultheria humifusa (Graham) Rydberg 

Alpine spicy wintergreen, western wintergreen, alpine wintergreen. Native perennial. 

Gaultheria ovatifolia Gray 

Oregon spicy wintergreen, oval-leaved gaultheria. Native perennial. 

Gaultheria shallon Pursh 

Salal. Native shrub. 

Hemitomes congestum Gray 

Coneflower, gnome plant. Native perennial. 

Kalmia microphylla (Hooker) Heller var. microphylla 

Small-leaved kalmia, swamp-laurel. Native shrub. 

Leucothoë davisiae Torrey ex Gray 

Black-laurel, western-laurel, Sierra-laurel. Native shrub. 

Menziesia ferruginea Smith 

-47-

Pacific menziesia, mock-azalea, rusty-leaf. Native shrub. 

Moneses uniflora (Linnaeus) Gray ssp. reticulata (Nuttall) Calder & Taylor 

Forest wintergreen, wood nymph, wax flower, single delight. Native perennial. CNPS List 4.3 

Monotropa hypopithys Linnaeus 

Pinesap. Native perennial. 

Monotropa uniflora Linnaeus 

Indian-pipe. Native perennial. CNPS List 2.2 

Orthilia secunda (Linnaeus) House ssp. secunda 

One-sided wintergreen, side bells. Native perennial. 

Phyllodoce empetriformis (J. E. Smith) D. Don 

Pink mountain heather, Cascade heather, red heather. Native shrub. 

Pityopus californica (Eastwood) Copel f. 

California pinefoot. Native perennial. CNPS List 4.2 

Pleuricospora fimbriolata Gray 

Fringed-pinesap, Sierra sap. Native perennial. 

Pterospora andromedea Nuttall 

Pinedrops. Native perennial. 

Pyrola asarifolia Michaux ssp. asarifolia 

Wintergreen. Native perennial. 

Pyrola asarifolia Michaux ssp. bracteata (Hooker) E. Haber 

Oregon wintergreen. Native perennial. 

Pyrola minor Linnaeus 

Lesser wintergreen. Native perennial. 

Pyrola picta J. E. Smith in Rees 

White-veined shinleaf, red canker. Native perennial. 

Rhododendron columbianum (Piper) Harmaja 

Western Labrador tea, trapper's tea. Native shrub. 

Rhododendron macrophyllum D. Don ex G. Don 

California rose-bay, Pacific rhododendron, California rhododendron. Native shrub. 

Rhododendron occidentale (Torrey & Gray) Gray var. occidentale 

Western azalea. Native shrub. 

Rhododendron occidentale (Torrey & Gray) Gray var. paludosum Jepson 

Western azalea. Endemic shrub. 

Sarcodes sanguinea Torrey 

Snow plant. Native perennial. 

Vaccinium caespitosum Michaux var. caespitosum 

Dwarf huckleberry, dwarf bilberry. Native shrub. 

Vaccinium deliciosum Piper 

Cascade bilberry. Native shrub. 

Vaccinium membranaceum Douglas ex Torrey 

Blue huckleberry, thin-leaved huckleberry, mountain bilberry. Native shrub. 

Vaccinium ovatum Pursh 

Evergreen huckleberry, California huckleberry. Native shrub. 

Vaccinium parvifolium J. E. Smith ex Coville 

Red huckleberry, red bilberry. Native shrub. 

Vaccinium scoparium Leiberg ex Coville 

Grouseberry, dwarf red whortleberry, little leaf huckleberry. Native shrub. CNPS List 2.2 

Vaccinium uliginosum Linnaeus ssp. occidentale (Gray) Hultén 

Western blueberry, bog bilberry. Native shrub. 

EUPHORBIACEAE • Spurge or Euphorb Family 

Croton setigerus Hooker 

Turkey mullein, dove weed. Native annual.Also weedy along roadsides. 

Euphorbia crenulata Engelmann 

Chinese caps. Native annual-perennial. 

Euphorbia esula Linnaeus 

Leafy spurge. Non-native perennial. 

Euphorbia glyptosperma (Engelmann) J. K. Small 

Engraved spurge, engraved sandmat. Native annual. 

Euphorbia helioscopia Linnaeus 

Wartweed. Non-native annual. 

Euphorbia lathyris Linnaeus 

Caper spurge, gopher plant, gopher spurge. Non-native perennial. 

Euphorbia maculata (Linnaeus) J. K. Small 

Spotted or nodding spurge, spotted sandmat. Non-native annual. 

Euphorbia marginata Pursh 

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Snow-on-the-mountain. Non-native annual. 

Euphorbia nutans (Lagasca) J. K. Small 

Eyebane. Non-native annual. 

Euphorbia oblongata Grisebach 

Oblong spurge. Non-native perennial. 

Euphorbia ocellata (Durand & Hilgard) Millspaugh ssp. ocellata 

Ocellated spurge, ocellated sandmat. Native annual. 

Euphorbia ocellata (Durand & Hilgard) Millspaugh ssp. rattanii (Watson) Koutnik 

Ocellated spurge, Stony Creek spurge. Endemic annual. CNPS List 1B.2 

Euphorbia peplus Linnaeus 

Petty spurge. Non-native annual. 

Euphorbia serpyllifolia (Persoon) ssp. serpyllifolia J. K. Small 

Thyme-leaved spurge, gulf sandmat. Native annual. 

Euphorbia spathulata Lamarck 

Reticulate-seeded spurge. Native annual. 

FAGACEAE • Beech or Oak Family 

Castanea dentata (Marshall) Borkhausen 

Chestnut, American chestnut. Non-native tree. Escaped ornamental. 

Chrysolepis chrysophylla (Douglas ex Hooker) Hjelmquist var. chrysophylla 

Golden chinquapin, giant chinquapin. Native tree. 

Chrysolepis chrysophylla (Douglas ex Hooker) Hjelmquist var. minor (Bentham) Munz 

Golden chinquapin. Native tree. 

Chrysolepis sempervirens (Kellogg) Hjelmquist 

Sierra chinquapin, bush chinquapin. Native shrub. 

Lithocarpus densiflorus (Hooker & Arnott) Rehder in Bailey var. densiflorus 

Tanoak. Native tree. 

Lithocarpus densiflorus (Hooker & Arnott) Rehder in Bailey var. echinoides (R. Brown of Campster) Abrams 

Tanoak, shrub tanoak, dwarf tanoak. Native shrub. 

Quercus agrifolia Neé var. agrifolia 

Coast live oak. Native tree. 

Quercus agrifolia Neé var. frutescens Engelmann 

Dwarf coast live oak. Native shrub. 

Quercus x alvordiana Eastwood [Q. douglasii x Q. john-tuckeri] 

Alvord oak. Native tree. 

Quercus berberidifolia Liebmann 

Scrub oak. Native shrub. 

Quercus chrysolepis Liebmann var. chrysolepis 

Canyon live oak, maul oak. Native tree. 

Quercus chrysolepis Liebmann var. nana (Jepson) Jepson 

Dwarf canyon live oak. Native shrub. 

Quercus douglasii Hooker & Arnott 

Blue oak. Native tree. 

Quercus durata Jepson var. durata 

Leather oak. Native shrub. 

Quercus x eplingii C. H. Muller [Q. douglasii x Q. garryana] 

Epling oak. Native tree. 

Quercus x ganderi C. B. Wolf[Q. agrifolia x Q. kelloggii] 

Gander oak. Native tree. 

Quercus garryana Douglas ex Hooker var. fruticosa (Engelmann) Govaerts in Govaerts & Frodin 

Brewer oak. Native shrub. 

Quercus garryana Douglas ex Hooker var. garryana 

Oregon white oak, Garry oak, Oregon oak. Native tree. 

Quercus john-tuckeri Nixon & C. H. Muller 

Tucker oak. Native shrub. 

Quercus x jolonensis Sargent [Q. douglasii x Q. lobata] 

Jolon’s oak. Native tree. 

Quercus kelloggii Newberry 

California black oak. Native shrub-tree. 

Quercus lobata Née 

Valley oak, roble, California white oak. Native tree. 

Quercus x macdonaldii Greene in Kellogg [Q. berberidifolia x Q. lobata] 

MacDonald oak. Native shrub-tree. 

Quercus x morehus Kellogg [Q. kelloggii x Q. wizlizeni] 

Oracle oak. Native tree. 

Quercus palmeri Engelmann 

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Dunn’s oak. Native shrub-tree. 

Quercus sadleriana R. Brown of Campster 

Sadler oak, deer oak. Endemic shrub. 

Quercus x subconvexa Tucker [Q. durata x Q. garryana] 

Native shrub-tree. 

Quercus vacciniifolia Kellogg ex Curran 

Huckleberry oak. Native shrub. 

Quercus wislizeni A. de Candolle in A. P. de Candolle var. frutescens Engelmann 

Dwarf interior live oak. Native shrub. 

Quercus wislizeni A. de Candolle in A. P. de Candolle var. wislizeni 

Interior live oak, Sierra live oak. Native tree. 

FRANKENIACEAE • Frankenia Family 

Frankenia salina (Molina) I. M. Johnston 

Alkali-heath, yerba reuma. Native perennial. 

GARRYACEAE • Silktassel Family 

Garrya buxifolia Gray 

Dwarf silktassel, dwarf tassel bush, boxleaf silktassel. Native shrub. 

Garrya congdonii Eastwood 

Interior silktassel. Native shrub. 

Garrya elliptica Douglas ex Lindley var. elliptica 

Wavyleaf silktassel, coast silktassel. Native shrub-tree. 

Garrya flavescens Watson 

Ashy silktassel. Native shrub. 

Garrya fremontii Torrey 

Fremont's silktassel, bear brush. Native shrub. 

GENTIANACEAE • Gentian Family 

Centaurium erythraea Rafinesque-Schmaltz 

European centaury. Non-native annual. 

Centaurium tenuiflorum (Hoffmannsegg & Link) Fritsch 

Slender centaury. Non-native annual. 

Cicendia quadrangularis (Lamarck) Grisebach 

American microcala, tim-wort. Native annual. 

Gentiana affinis Grisebach ex Hooker 

Prairie gentian, trapper's gentian. Native perennial. 

Gentiana calycosa Grisebach 

Explorer's gentian. Native perennial. 

Gentiana newberryi Gray ssp. newberryi 

Alpine gentian. Native perennial. 

Gentiana plurisetosa C. Mason 

Klamath gentian. Native perennial. CNPS List 1B.3 

Gentiana sceptrum Grisebach 

King's gentian. Native perennial. 

Gentiana setigera Gray 

Mendocino gentian. Endemic perennial. CNPS List 1B.2 

Gentianella amarella (Linnaeus) Boerner ssp. acuta (Michaux) J. Gillette 

Northern gentian, felwort. Native annual. 

Gentianopsis simplex (Gray) Iltis 

Hiker's gentian. Native annual. 

Swertia albicaulis (Douglas ex Grisebach) Kuntze var. albicaulis 

White-stemmed swertia, Modoc frasera. Native perennial. 

Swertia albicaulis (Douglas ex Grisebach) Kuntze var. nitida (Bentham) Jepson 

Shining swertia. Native perennial. 

Swertia fastigiata Pursh 

Umpqua green gentian, clustered green gentian. Native perennial. 

Swertia radiata (Kellogg) Kuntze 

Giant deer tongue, monument plant, deer’s ears. Native perennial. 

Swertia umpquaensis (Peck & Applegate) H. St. John 

Umpqua green-gentian. Native perennial. CNPS List 2.2 

Zeltnera abramsii (Munz) Mansion 

Charming centaury. Native annual. 

Zeltnera davyi (Jepson) Mansion 

Davy’s centaury. Native annual. 

-50-

Zeltnera muehlenbergii (Grisebach) Mansion 

Monterey centaury. Native annual. 

Zeltnera trichantha (Grisebach) Mansion 

Alkali centaury. Native annual. 

GERANIACEAE • Geranium Family 

Erodium botrys (Cavanilles) Bertolini 

Broad-leaved filaree. Non-native annual. 

Erodium brachycarpum (Godron) Thellung 

Short-fruited stork’s bill. Non-native annual. 

Erodium cicutarium (Linnaeus) L'Héritier ex Aiton 

Red-stemmed filaree. Non-native annual. 

Erodium macrophylla Hooker & Arnott 

Round-leaved stork’s bill. Native annual-perennial. 

Erodium moschatum (Linnaeus) L'Héritier 

White-stemmed filaree, musk-clover. Non-native annual-perennial. 

Geranium bicknellii Britton 

Bicknell's geranium. Native annual-perennial. 

Geranium carolinianum Linnaeus 

Carolina geranium. Native annual. 

Geranium columbinum Linnaeus 

Long-stalked geranium. Non-native annual. 

Geranium dissectum Linnaeus 

Cut-leaved geranium. Non-native annual. 

Geranium molle Linnaeus 

Dove's-foot geranium. Non-native annual-perennial. 

Geranium oreganum T. J. Howell 

Oregon geranium. Native perennial. 

Geranium potentilloides de Candolle 

Cinquefoil geranium. Non-native perennial. 

Geranium pusillum Burman f. 

Small-flowered geranium. Non-native annual. 

Geranium retrorsum L'Héritier ex de Candolle 

New Zealand geranium. Non-native perennial. 

Geranium robertianum Linnaeus 

Herb robert, robert geranium. Non-native perennial. 

Geranium viscosissimum Fischer & Meyer 

Sticky geranium. Native perennial. 

Geranium yeoi Aedo & Muñoz Garmendia 

Greater herb robert. Non-native biennial. 

Pelargonium capitatum (Linnaeus) L'Héritier 

Herb-scented-geranium, rose-scented-geranium. Non-native shrub-vine. 

Pelargonium grossularioides (Linnaeus) L'Héritier 

Gooseberry-geranium. Non-native perennial. 

Pelargonium vitifolium (Linnaeus) L'Héritier ex Aiton 

Grape-leaved-geranium. Non-native shrub. 

GRAMINEAE (POACEAE) • Grass Family 

Aegilops cylindrica Host 

Jointed goat grass. Non-native annual. 

Aegilops geniculata Roth 

Ovate goat grass. Non-native annual. 

Aegilops neglecta Requien ex Bertoloni 

Three-awned goat grass. Non-native annual. 

Aegilops triuncialis Linnaeus 

Barbed goat grass. Non-native annual 

Agropyron cristatum (Linnaeus) Gaertner ssp. desertorum (Fischer ex Link) Á. Löve 

Crested wheatgrass. Non-native annual. 

Agrostis blasdalei Hitchcock var. blasdalei 

Blasdale's bent grass. Native perennial. CNPS List 1B.2 

Agrostis capillaris Linnaeus 

Colonial bent grass. Non-native perennial. 

Agrostis clivicola Crampton var. clivicola 

Coastal bluff bent grass. Native perennial. 

Agrostis densiflora Vasey 

California bent grass. Native perennial. 

-51-

Agrostis elliottiana Schultes 

Elliott's bent grass, Sierra bent grass. Native annual. 

Agrostis exarata Trinius 

Spike bent grass. Native perennial. 

Agrostis gigantea Roth 

Redtop. Non-native perennial. 

Agrostis hallii Vasey 

Hall's bent grass. Native perennial. 

Agrostis hendersonii Hitchcock 

Henderson’s bent grass. Native annual. 

Agrostis humilis Vasey 

Mountain bent grass, alpine bent grass. Native perennial. 

Agrostis hyemalis (Walter) Britton, Sterns, & Poggenburg 

Tickle grass. Native perennial. 

Agrostis idahoensis Nash 

Idaho bent grass. Native perennial. 

Agrostis microphylla Steudel 

Bent grass. Native annual. 

Agrostis oregonensis Vasey 

Oregon redtop. Native perennial. 

Agrostis pallens Trinius 

Dune bent grass, seashore bent grass. Native perennial. 

Agrostis scabra von Willdenow 

Rough bent grass. Native perennial. 

Agrostis stolonifera Linnaeus 

Creeping bent grass. Non-native perennial. 

Agrostis variabilis Rydberg 

Mountain bent grass. Native perennial. 

Aira caryophyllea Linnaeus var. capillaris (Mertens & W. D. J. Koch) Mutel 

Delicate hair grass. Non-native annual. 

Aira caryophyllea Linnaeus var. caryophyllea 

Silver hair grass. Non-native annual. 

Aira praecox Linnaeus 

Little hair grass, early hair grass. Non-native annual. 

Alopecurus aequalis Sobolewski var. aequalis 

Little meadow foxtail. Native perennial. 

Alopecurus carolinianus Walter 

Carolina foxtail. Native annual. 

Alopecurus geniculatus Linnaeus var. geniculatus 

Water foxtail. Native perennial. 

Alopecurus pratensis Linnaeus ssp. pratensis 

Foxtail. Non-native annual. 

Alopecurus saccatus Vasey 

Pacific meadow foxtail. Native annual. 

Ammophila arenaria (Linnaeus) Link ssp. arenaria 

European beach grass, maram. Non-native perennial. 

Ammophila breviligulata Fernald ssp. breviligulata 

American beach grass. Non-native perennial. 

Andropogon glomeratus (Walter) Britton, Sterns, & Poggenburg var. scabriglumis C. S. Campbell 

Bushy bluestem. Native perennial. 

Andropogon virginicus Linnaeus var. virginicus 

Broomsedge bluestem. Non-native perennial. 

Anthoxanthum aristatum Boissière ssp. aristatum 

Vernal grass. Non-native annual. 

Anthoxanthum nitens (Weber) Y. Schouten & Veldkamp ssp. nitens 

Holy grass, vanilla grass. Native perennial. CNPS List 2 

Anthoxanthum occidentale (Buckley) Veldkamp in Y. Schouten & Veldkamp 

California sweet grass. Native perennial. 

Anthoxanthum odoratum Linnaeus var. odoratum 

Sweet vernal grass. Non-native perennial. 

Aristida oligantha Michaux 

Prairie three-awn, oldfield three-awn. Native annual. 

Aristida ternipes Cavanilles var. gentilis (Henrard) Allred 

Hook three-awn. Native perennial. 

Arrhenatherum elatius (Linnaeus) P. de Beauvois ex J. & C. Presl 

Tall oat grass. Non-native perennial. 

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Arundo donax Linnaeus 

Giant reed. Non-native perennial. 

Avena barbata Pott ex Link in Schrader 

Slender oat. Non-native annual. 

Avena fatua Linnaeus var. fatua 

Wild oat. Non-native annual. 

Avena sativa Linnaeus 

Oat, common oat. Non-native annual. Escaped crop plant. 

Beckmannia syzigachne (Steudel) Fernald 

American slough grass. Native perennial. 

Bothriochloa ischaemum (Linnaeus) Keng var. songarica (Ruprecht ex Fischer & Meyer) Celarier & Harlan 

King’s Ranch bluestem. Non-native perennial. 

Brachypodium distachyon (Linnaeus) P. de Beauvois 

Purple false brome. Non-native annual. 

Briza maxima Linnaeus 

Large quaking grass, rattlesnake grass. Non-native annual. 

Briza minor Linnaeus 

Small quaking grass. Non-native annual. 

Bromus arenarius Labillardière 

Australian chess. Non-native annual. 

Bromus arizonicus (Shear) Stebbins 

Arizona brome. Native annual. 

Bromus arvensis Linnaeus ssp. arvensis 

Field brome. Non-native annual. 

Bromus berteroanus Colla 

Chilean chess. Non-native annual. 

Bromus briziformis Fischer & von Meyer in Fischer, von Meyer, & Trautvetter 

Rattlesnake grass. Non-native annual. 

Bromus carinatus Hooker & Arnott var. carinatus 

California brome, large-flowered brome. Native perennial. 

Bromus carinatus Hooker & Arnott var. marginatus (Nees von Esenbeck ex Steudel) Barkworth & Anderton 

Mountain brome. Native perennial. 

Bromus catharticus Vahl var. catharticus 

Rescue grass. Non-native annual-perennial. 

Bromus catharticus Vahl var. elatus (E. Desvaux) Planchuelo 

Chilean brome. Non-native annual. 

Bromus ciliatus Linnaeus 

Fringed brome. Native perennial. 

Bromus commutatus Schrader 

Hairy chess, meadow brome. Non-native annual. 

Bromus diandrus Roth 

Ripgut brome, needle brome. Non-native annual. 

Bromus erectus Hudson 

English brome. Non-native perennial. 

Bromus hordeaceus Linnaeus ssp. hordeaceus 

Soft brome, soft chess, soft cheat. Non-native annual. 

Bromus hordeaceus Linnaeus ssp. molliformis (J. Lloyd ex Billot) Maire & Weiller 

Soft brome. Non-native annual. 

Bromus inermis Leysser ssp. inermis 

Smooth brome. Non-native perennial. 

Bromus japonicus Thunberg ex Murray ssp. japonicus 

Japanese brome. Non-native annual. 

Bromus laevipes Shear 

Chinook brome or woodland brome. Native perennial. 

Bromus madritensis Linnaeus ssp. madritensis 

Spanish brome. Non-native annual. 

Bromus madritensis Linnaeus ssp. rubens (Linnaeus) Husnot 

Foxtail brome, red brome. Non-native annual. 

Bromus maritimus (Piper) Hitchcock 

Maritime brome. Native perennial. 

Bromus orcuttianus Vasey 

Orcutt's brome. Native perennial. 

Bromus polyanthus Scribner 

Great Basin brome. Native perennial. 

Bromus racemosus Linnaeus 

Smooth brome. Non-native annual. 

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Bromus secalinus Linnaeus var. secalinus 

Chess, cheat grass. Non-native annual. 

Bromus sterilis Linnaeus 

Poverty brome, sterile brome. Non-native annual. 

Bromus suksdorfii Vasey 

Suksdorf's brome. Native perennial. 

Bromus tectorum Linnaeus 

Downy brome, cheat grass. Non-native annual. 

Bromus vulgaris (Hooker) Shear 

Narrow-leaved brome. Native perennial. 

Calamagrostis bolanderi Thurber in Watson 

Bolander's reed grass. Native perennial. CNPS List 4.2 

Calamagrostis breweri Thurber in Watson 

Brewer's reed grass. Native perennial. 

Calamagrostis canadensis (Michaux) P. de Beauvois var. canadensis 

Bluejoint. Native perennial. 

Calamagrostis foliosa Kearney 

Leafy reed grass. Endemic perennial. CNPS List 4.2 • State: rare. 

Calamagrostis koelerioides Vasey 

Tufted pine grass. Native perennial. 

Calamagrostis x lactea Suksdorf ex Beal [C. canadensis x C. nutkaensis] 

Bluejoint. Native perennial. 

Calamagrostis nutkaensis (Presl) J. Presl ex Steudel 

Pacific reed grass. Native perennial. 

Calamagrostis ophitidis (J. T. Howell) Nygren 

Serpentine reed grass. Native perennial. CNPS List 4.3 

Calamagrostis purpurascens R. Brown in Richardson var. purpurascens 

Purple reed grass. Native perennial. 

Calamagrostis rubescens Buckley 

Pine grass, pine reed grass. Native perennial. 

Calamagrostis stricta (Timm) Koeler var. inexpansa (Gray) C. W. Greene 

Northern reed grass. Native perennial. CNPS List 2.1 

Chloris virgata Swartz 

Feather finger grass. Native annual. 

Cinna latifolia (Treviranus ex Göppert) Grisebach in von Ledebour 

Wood reed grass, drooping wood reed. Native perennial. 

Cortaderia jubata (Lemoine ex Carriére) Stapf 

Jubata grass, Uruguyan pampas grass, purple pampas grass. Non-native perennial. 

Cortaderia selloana (Schultes & Schultes f.) Ascherson & Graebner 

Uruguayan pampas grass. Non-native perennial. 

Crypsis alopecuroides (Pillans & Mitterpacher von Mitterburg) Schrader 

Prickle grass. Non-native annual. 

Crypsis schoenoides (Linnaeus) Lamarck 

Prickle grass, swamp-timothy, swamp grass. Non-native annual. 

Crypsis vaginiflora (Forsskal) Opiz 

Sharp-leaved crypsis. Non-native annual. 

Cynodon dactylon (Linnaeus) Persoon var. dactylon 

Bermuda grass. Non-native perennial. 

Cynosurus cristatus Linnaeus 

Crested dogtail. Non-native perennial. 

Cynosurus echinatus Linnaeus 

Dogtail, hedgehog dogtail. Non-native annual. 

Dactylis glomerata Linnaeus var. glomerata 

Orchard grass. Non-native perennial. 

Danthonia californica Bolander 

California oat grass. Native perennial. 

Danthonia decumbens (Linnaeus) de Candolle in de Candolle & Lamarck 

Common heath grass. Non-native perennial. 

Danthonia intermedia Vasey 

Timber oat grass, wild mountain oat grass. Native perennial. 

Danthonia unispicata (Thurber) Munro ex Vasey 

One-spike oat grass, few-flowered wild oat grass. Native perennial. 

Deschampsia atropurpurea (Wahlenberg) Scheele 

Mountain hair grass. Native perennial. CNPS List 4.3 

Deschampsia caespitosa (Linnaeus) P. de Beauvois ssp. beringensis (Hultén) W. E. Lawrence 

Tufted hair grass, coastal hair grass. Native perennial. 

-54-

Deschampsia caespitosa (Linnaeus) P. de Beauvois ssp. caespitosa 

Tufted hairgrass, mountain hair grass. Native perennial. 

Deschampsia caespitosa (Linnaeus) P. de Beauvois ssp. holciformis (J. Presl) W. E. Lawrence 

Pacific hair grass. Native perennial. 

Deschampsia danthonioides (Trinius) Munro ex Bentham 

Annual hair grass. Native annual. 

Deschampsia elongata (Hooker) Munro ex Bentham 

Slender hair grass. Native perennial. 

Digitaria ischaemum (Schreber ex Schweigger) Schreber ex Muhlenberg var. ischaemum 

Smooth crab grass. Non-native annual. 

Digitaria sanguinalis (Linnaeus) Scopoli 

Hairy crab grass. Non-native annual. 

Distichlis spicata (Linnaeus) Greene 

Salt grass. Native perennial. 

Echinochloa colonum (Linnaeus) Link 

Awnless barnyard grass, jungle-rice. Non-native annual. 

Echinochloa crus-galli (Linnaeus) P. de Beauvois var. crus-galli 

Barnyard grass, water grass. Non-native annual. 

Echinochloa crus-pavonis (von Humboldt, Bonpland, & Kunth) Schultes var. crus-pavonis 

Gulf cockspur. Non-native annual. 

Echinochloa esculenta (A. Braun) H. Scholz 

Japanese water grass, Japanese millet. Non-native annual. 

Echinochloa muricata (P. de Beauvois) Fernald var. microstachya Wiegand 

American barnyard grass. Non-native annual. 

Echinochloa muricata (P. de Beauvois) Fernald var. muricata 

Cockspur. Non-native annual. 

Ehrharta erecta Lamarck 

Upright veldt grass, panic veldt grass. Non-native perennial. 

x Elyhordeum macounii (Vasey) Barkworth & Dewey [Hordeum jubatum x Elymus trachycaulus] 

Macoun's wild-rye. Native perennial. 

Elymus x aristatus Merrill [E. cinereus x E. multisetus] 

Purple wheat grass. Native perennial. 

Elymus arizonicus (Scribner & J. G. Smith) Gould 

Arizona wild-rye. Non-native perennial. 

Elymus californicus (Bolander ex Thurber) Gould 

California bottlebrush grass. Native perennial. 

Elymus caput-medusae Linnaeus ssp. caput-medusae 

Medusa head. Non-native annual. 

Elymus condensatus J. Presl 

Giant rye grass. Native perennial. Historic collection; doubtfully persisting. 

Elymus elongatus (Host) Runemark var. elongatus 

Tall wheat grass. Non-native perennial. 

Elymus elymoides (Rafinesque) Swezey ssp. californicus (J. G. Smith) Barkworth 

California squirreltail. Native perennial. 

Elymus elymoides (Rafinesque) Swezey ssp. elymoides 

Common squirreltail. Native perennial. 

Elymus elymoides (Rafinesque) Swezey ssp. hordeoides (Suksdorf) Barkworth 

Western squirreltail. Native perennial. 

Elymus glaucus Buckley ssp. glaucus 

Blue wild-rye, western wild-rye. Native perennial. 

Elymus glaucus Buckley ssp. jepsonii (Davy) Gould 

Jepson's wild-rye. Native perennial. 

Elymus glaucus Buckley ssp. virescens (Piper) Gould 

Virginia wild-rye. Native perennial. 

Elymus x hansenii Scribner [E. glaucus x E. elymoides] 

Squirreltail. Native perennial. 

Elymus hispidus (Opiz) Melderis 

Wild-rye. Non-native perennial. 

Elymus lanceolatus (Scribner & J. G. Smith) Gould ssp. lanceolatus 

Thick-spike wild rye. Native perennial. 

Elymus mollis Trinius ssp. mollis 

American dunegrass, sea lyme grass. Native perennial. 

Elymus multisetus (J. G. Smith) Burtt-Davy 

Squirreltail. Native perennial. 

Elymus pacificus Gould 

Pacific wild-rye. Native perennial. 

-55-

Elymus repens (Linnaeus) Gould ssp. repens 

Quack grass. Non-native perennial. 

Elymus smithii (Rydberg) Gould [possibly E. lanceolatus x E. triticoides] 

Western wheat grass. Native perennial. 

Elymus spicatus (Pursh) Gould 

Bluebunch wheat grass. Native perennial. 

Elymus stebbinsii Gould ssp. septentrionalis Barkworth 

Stebbins' wheat grass. Native perennial. 

Elymus trachycaulus (Link) Gould ex Shinners ssp. subsecundus (Link) Á. Löve & D. Löve 

Slender wheat grass. Native perennial. 

Elymus trachycaulus (Link) Gould ex Shinners ssp. trachycaulus 

Slender wheat grass. Native perennial. 

Elymus triticoides Buckley ssp. triticoides 

Creeping wild-rye. Native perennial. 

Elymus x vancouverensis Vasey [E. mollis x E. triticoides] 

Vancouver wild-rye. Native perennial. 

Eragrostis cilianensis (Allioni) Vignolo-Lutati ex Janchen 

Stink grass, candy grass. Non-native annual. 

Eragrostis hypnoides (Lamarck) Britton, Sterns, & Poggenburg 

Teal love grass, creeping love grass. Native annual. 

Eragrostis mexicana (Hornemann) Link ssp. virescens (J. Presl) Koch & Sánchez 

Chilean love grass. Native annual. 

Eragrostis minor Host 

Little love grass. Non-native annual. 

Eragrostis pectinacea (Michaux) Nees von Esenbeck var. pectinacea 

Tufted love grass. Native annual. 

Eragrostis pilosa (Linnaeus) P. de Beauvois var. pilosa 

Indian love grass. Native annual. 

Festuca arundinacea Schreber ssp. arundinacea 

Alta fescue, tall fescue, meadow fescue. Non-native perennial. 

Festuca bromoides Linnaeus 

Brome six-weeks grass. Non-native annual. 

Festuca californica Vasey var. californica 

California fescue. Native perennial. 

Festuca elmeri Scribner & Merrill 

Elmer's fescue, coast range fescue. Native perennial. 

Festuca idahoensis Elmer 

Idaho fescue. Native perennial. 

Festuca microstachys Nuttall 

Small six-weeks grass. Native annual. 

Festuca myuros Linnaeus 

Rat-tail six-weeks grass. Non-native annual. 

Festuca occidentalis Hooker 

Western fescue. Native perennial. 

Festuca octoflora Walter 

Eight-flowered six-weeks grass. Native annual. 

Festuca pratensis Hudson 

Meadow fescue. Non-native perennial. 

Festuca roemeri (Pavlick) E. B. Alexeev var. klamathensis 

Roemer’s fescue. Endemic perennial. 

Festuca roemeri (Pavlick) E. B. Alexeev var. roemeri 

Roemer’s fescue. Native perennial. 

Festuca rubra Linnaeus ssp. pruinosa (Hackel) Piper 

Rock fescue. Native perennial. 

Festuca rubra Linnaeus ssp. rubra 

Red fescue. Native perennial. 

Festuca subulata Trinius in Bongard 

Bearded fescue, nodding fescue. Native perennial. 

Festuca subuliflora Scribner in Macoun 

Coast range fescue, crinkle-awn fescue. Native perennial. 

Festuca trachyphylla (Hackel) Krajina 

Hard fescue. Non-native perennial. 

Festuca viridula Vasey 

Greenleaf fescue, mountain bunchgrass. Native perennial. 

Gastridium phleoides (Nees von Esenbeck & Meyen) C. E. Hubbard 

Nit grass. Non-native annual. 

-56-

Glyceria borealis (Nash) Batchelder 

Northern manna grass. Native perennial. 

Glyceria declinata Brébisson 

Waxy manna grass. Native perennial. 

Glyceria elata (Nash) M. E. Jones 

Tall manna grass, weak manna grass. Native perennial. 

Glyceria fluitans (Linnaeus) R. Brown 

Floating manna grass. Native perennial. 

Glyceria grandis Watson ex Gray var. grandis 

American manna grass. Native perennial. CNPS List 2.3 

Glyceria leptostachya Buckley 

Davy's manna grass. Native perennial. 

Glyceria x occidentalis (Piper) J. C. Nelson [G. fluitans x G. leptostachya] 

Northwestern manna grass. Native perennial. 

Glyceria striata (Lamarck) Hitchcock 

Fowl manna grass. Native perennial. 

Hainardia cylindrica (von Willdenow) Greuter 

Thintail. Non-native annual. 

Holcus lanatus Linnaeus 

Velvet grass. Non-native perennial. 

Holcus mollis Linnaeus 

Creeping velvet grass. Non-native perennial. 

Hordeum brachyantherum Nevski ssp. brachyantherum 

Meadow barley. Native perennial. 

Hordeum brachyantherum Nevski ssp. californicum (Covas & Stebbins) von Bothmer, Jacobsen, & Seberg 

California barley. Native perennial. 

Hordeum depressum (Scribner & J. G. Smith) Rydberg 

Alkali barley, low barley. Native annual. 

Hordeum jubatum Linnaeus ssp. jubatum 

Foxtail barley, squirreltail barley. Native annual-perennial. 

Hordeum marinum Hudson ssp. gussoneanum (Parlatori) Thellung 

Squirreltail grass. Non-native annual. 

Hordeum marinum Hudson ssp. marinum 

Squirreltail grass. Non-native annual. 

Hordeum murinum Linnaeus ssp. glaucum (Steudel) Tzvelev 

Glaucous barley, smooth barley. Non-native annual. 

Hordeum murinum Linnaeus ssp. leporinum (Link) Arcangeli 

Hare barley, mouse barley. Non-native annual. 

Hordeum murinum Linnaeus ssp. murinum 

Wall barley. Non-native annual. 

Hordeum vulgare Linnaeus 

Barley, cultivated barley. Non-native annual. Escaped crop plant; also planted for erosion control. 

Imperata brevifolia Vasey 

Satintail. Native perennial. 

Koeleria gerardii (Villars) Shinners 

Bristly koeleria. Non-native annual. 

Koeleria macrantha (von Ledebour) Schultes in Schultes & Schultes f. 

June grass. Native perennial. 

Lagurus ovatus Linnaeus 

Hare's tail. Non-native annual. 

Lamarckia aurea (Linnaeus) Moench 

Goldentop. Non-native annual. 

Leersia oryzoides (Linnaeus) Swartz 

Rice cut grass. Native perennial. 

Leptochloa fusca (Linnaeus) Kunth ssp. fascicularis (Lamarck) N. Snow 

Bearded sprangletop. Native annual-perennial. 

Leptochloa fusca (Linnaeus) Kunth ssp. uninervia (J. Presl) N. Snow 

Mexican sprangletop. Native annual-perennial. 

Lolium perenne Linnaeus 

English rye grass, perennial rye grass. Non-native annual-perennial. 

Lolium rigidum Gaudin 

Swiss rye grass, Wimmera rye grass. Non-native annual. 

Lolium temulentum Linnaeus 

Darnel, annual rye grass. Non-native annual. 

Melica aristata Thurber ex Bolander 

Onion grass. Native perennial. 

-57-

Melica bulbosa Geyer ex Porter & Coulter 

Western melic. Native perennial. 

Melica californica Scribner 

California melic. Native perennial. 

Melica fugax Bolander 

Little onion grass. Native perennial. 

Melica geyeri Munro ex Bolander var. aristulata J. T. Howell 

Geyer’s onion grass. Native perennial. 

Melica geyeri Munro ex Bolander var. geyeri 

Geyer's onion grass. Native perennial. 

Melica harfordii Bolander 

Harford's onion grass. Native perennial. 

Melica imperfecta Trinius 

Coast range melic. Native perennial. 

Melica spectabilis Scribner 

Purple onion grass, showy onion grass. Native perennial. CNPS List 4.3 

Melica stricta Bolander var. stricta 

Nodding melic grass. Native perennial. 

Melica subulata (Grisebach) Scribner 

Alaska onion grass. Native perennial. 

Melica torreyana Scribner 

Torrey's onion grass. Native perennial. 

Melinis repens (von Willdenow) Zizka 

Natal grass, ruby grass. Non-native perennial. 

Muhlenbergia andina (Nuttall) Hitchcock 

Hairy muhly. Native perennial. 

Muhlenbergia asperifolia (Nees von Esenbeck & Meyen ex Trinius) Parodi 

Scratch grass, alkali muhly. Native perennial. 

Muhlenbergia filiformis (Thurber ex Watson) Rydberg 

Slender muhly, pull-up muhly. Native annual. 

Muhlenbergia jonesii (Vasey) Hitchcock in Jepson 

Jones' muhly, Modoc muhly. Native perennial. CNPS List 4.3 

Muhlenbergia mexicana (Linnaeus) Trinius 

Mexican muhly. Native perennial. 

Muhlenbergia minutissima (Steudel) Swallen 

Least muhly. Native annual. 

Muhlenbergia montana (Nuttall) Hitchcock in Jepson 

Mountain muhly. Native perennial. 

Muhlenbergia richardsonis (Trinius) Rydberg 

Mat muhly. Native perennial. 

Muhlenbergia rigens (Bentham) Hitchcock 

Deer grass. Native perennial. 

Orcuttia tenuis Hitchcock 

Slender Orcutt’s grass. Native perennial. CNPS List 1B.1 • Federal: threatened • State: endangered. 

Panicum acuminatum Swartz var. acuminatum 

Tapered panic grass. Native perennial. 

Panicum acuminatum Swartz var. fasciculatum (Torrey) Lelong 

Western panic grass. Native perennial. 

Panicum acuminatum Swartz var. lindheimeri (Nash) Beetle 

Lindheimer’s panic grass. Native perennial. 

Panicum capillare Linnaeus 

Witchgrass. Native annual. 

Panicum dichotomiflorum Michaux var. dichotomiflorum 

Fall panic grass. Native annual. 

Panicum hillmanii Chase 

Hillman’s panic grass. Native annual. 

Panicum miliaceum Linnaeus 

Proso millet, common millet. Non-native annual. 

Panicum oligosanthes Schultes var. scribnerianum (Nash) Fernald 

Scribner's panic grass. Native perennial. 

Parapholis incurva (Linnaeus) C. E. Hubbard 

Sickle grass. Non-native annual. 

Parapholis strigosa (Dumortier) C. E. Hubbard 

Sea hard grass. Non-native annual. 

Paspalum dilatatum Poiret in Lamarck 

Dallis grass. Non-native perennial. 

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Paspalum distichum Linnaeus 

Knot grass. Native perennial. 

Pennisetum clandestinum Hochstetter ex Chiovenda 

Kikuyu grass. Non-native perennial. 

Phalaris angusta Nees von Esenbeck ex Trinius 

Timothy canary grass. Native annual. 

Phalaris aquatica Linnaeus 

Harding grass. Non-native perennial. 

Phalaris arundinacea Linnaeus var. arundinacea 

Reed canary grass. Native perennial. 

Phalaris californica Hooker & Arnott 

California canary grass. Native perennial. 

Phalaris canariensis Linnaeus 

Canary grass. Non-native annual. 

Phalaris caroliniana Walter 

Carolina canary grass. Non-native annual. 

Phalaris lemmonii Vasey 

Lemmon's canary grass. Native annual. 

Phalaris minor Retzius 

Mediterranean canary grass, little seed canary grass. Non-native annual. 

Phalaris paradoxa Linnaeus 

Hood canary grass. Non-native annual. 

Phleum alpinum Linnaeus ssp. alpinum 

Mountain timothy. Native perennial. 

Phleum pratense Linnaeus ssp. pratense 

Timothy. Non-native perennial. 

Phragmites australis (Cavanilles) Trinius ex Steudel ssp. americanus Saltonstall, Peterson, & Soreng 

Common reed, reed grass. Native perennial. 

Phragmites australis (Cavanilles) Trinius ex Steudel ssp. australis 

Common reed, reed grass. Native perennial. 

Pleuropogon californicus (Nees von Esenbeck) Bentham ex Vasey var. californicus 

Semaphore grass. Native annual. 

Pleuropogon californicus (Nees von Esenbeck) Bentham ex Vasey var. davyi (L. Benson) P. But 

Davy's semaphore grass. Endemic annual. CNPS List 4.3 

Pleuropogon hooverianus (L. Benson) J. T. Howell 

Hoover's semaphore grass. Native perennial. CNPS List 1B.1 • State: threatened. 

Pleuropogon refractus (Gray) Bentham ex Vasey 

Nodding semaphore grass. Native perennial. CNPS List 4 

Poa annua Linnaeus 

Annual blue grass, winter grass. Non-native annual. 

Poa bolanderi Vasey 

Bolander's blue grass. Native annual. 

Poa bulbosa Linnaeus 

Bulbous blue grass. Non-native perennial. 

Poa compressa Linnaeus 

Canada blue grass, Canadian blue grass. Non-native perennial. 

Poa confinis Vasey 

Dune blue grass. Native perennial. 

Poa cusickii Vasey ssp. epilis (Scribner) Weber 

Skyline blue grass, mountain blue grass. Native perennial. 

Poa cusickii Vasey ssp. purpurascens (Vasey) R. Soreng 

Cusick’s blue grass. Native perennial. 

Poa douglasii Nees von Esenbeck 

Seashore blue grass, sand-dune blue grass. Native perennial. 

Poa howellii Vasey & Scribner 

Howell's blue grass. Native annual. 

Poa infirma Kunth 

Early meadow grass, weak blue grass. Non-native annual. 

Poa kelloggii Vasey 

Kellogg's blue grass. Native perennial. 

Poa leptocoma Trinius ssp. leptocoma 

Bog blue grass. Native perennial. 

Poa x limosa Scribner & Williams [P. secunda x P. pratensis] 

Lassen Co. blue grass. Native perennial. 

Poa macrantha Vasey 

Large-flowered sand-dune blue grass. Native perennial. 

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Poa nemoralis Linnaeus 

Wood blue grass. Non-native perennial. 

Poa palustris Linnaeus 

Fowl blue grass, fowl meadow blue grass. Non-native perennial. 

Poa piperi Hitchcock 

Piper's blue grass. Endemic perennial. CNPS List 4.2 

Poa pratensis Linnaeus ssp. pratensis 

Kentucky blue grass. Non-native perennial. 

Poa pringlei Scribner 

Pringle's blue grass. Native perennial. 

Poa rhizomata Hitchcock in Jepson 

Timber blue grass. Native perennial. CNPS List 4.3 

Poa secunda J. Presl ssp. juncifolia (Scribner) R. J. Soreng 

Alkali blue grass. Native perennial. 

Poa secunda J. Presl ssp. secunda 

Alkali blue grass. Native perennial. 

Poa trivialis Linnaeus ssp. trivialis 

Rough blue grass, rough-stalked meadow grass. Non-native perennial. 

Poa unilateralis Scribner in Vasey ssp. unilateralis 

San Francisco blue grass, ocean-bluff blue grass. Native perennial. 

Poa wheeleri Vasey 

Wheeler's blue grass. Native perennial. 

Polypogon australis Brongniart 

Chilean beard grass. Non-native perennial. 

Polypogon maritimus von Willdenow 

Mediteranean beard grass, maritime beard grass. Non-native annual. 

Polypogon monspeliensis (Linnaeus) Desfontaines 

Rabbitfoot grass, annual beard grass. Non-native annual. 

Polypogon viridis (Gouan) Breistroffer 

Water beard grass, water bent grass. Non-native perennial. 

Puccinellia distans (von Jacquin) Parlatore ssp. distans 

European alkali grass. Non-native annual. 

Puccinellia howellii J. I. Davis 

Howell's alkali grass. Endemic perennial. CNPS List 1B.1 

Puccinellia lemmonii (Vasey) Scribner 

Lemmon's alkali grass. Native perennial. 

Puccinellia nutkaensis (J. Presl in C. Presl) Fernald & Weatherby 

Alaska alkali grass. Native perennial. 

Puccinellia nuttalliana (Schultes) Hitchcock 

Nuttall's alkali grass. Native perennial. 

Puccinellia pumila (Vasey) Hitchcock 

Dwarf alkali grass. Native perennial. CNPS List 2.2 

Rytidosperma penicillatum (Labillardière) Connor & Edgar 

Hairy danthonia. Non-native perennial. 

Schismus barbatus (Loefling ex Linnaeus) Thellung 

Mediterranean grass. Non-native annual. 

Scribneria bolanderi (Thurber) Hackel 

Scribner's grass. Native annual. 

Secale cereale Linnaeus 

Rye, cultivated rye. Non-native annual. Escaped crop plant. 

Setaria pumila (Poiret) Roemer & Schultes ssp. pumila 

Yellow foxtail, bristle grass. Non-native annual. 

Setaria sphacelata (Schumacher) M. B. Moss ex Stapf & C. E. Hubbard 

African bristle grass. Non-native perennial. 

Setaria viridis (Linnaeus) P. de Beauvois var. viridis 

Green bristle grass, green foxtail. Non-native annual. 

Sorghum bicolor (Linnaeus) Moench 

Sorghum, sorgo, milo. Non-native annual. 

Sorghum halepense (Linnaeus) Persoon 

Johnson grass. Non-native perennial. 

Spartina alterniflora Loiseleur-Deslongchamps 

Smooth cord grass, salt-water cord grass. Non-native perennial. 

Spartina densiflora Brongniart 

Humboldt Bay cord grass, dense-flowered cord grass. Non-native perennial. 

Spartina foliosa Trinius 

California cord grass. Native perennial. 

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Sporobolus vaginiflorus (Torrey ex Gray) Torrey ex Wood var. vaginiflorus 

Poverty drop seed. Native annual. 

Stipa californica Merrill & Burtt-Davy ex Hall 

California needle grass. Native perennial. 

Stipa cernua Stebbins & R. M. Love 

Nodding needle grass. Native perennial. 

Stipa lemmonii (Vasey) Scribner var. lemmonii 

Lemmon's needle grass. Native perennial. 

Stipa lemmonii (Vasey) Scribner var. pubescens Crampton 

Lemmon's needle grass. Native perennial. 

Stipa lepida Hitchcock 

Small-flowered needle grass. Native perennial. 

Stipa lettermanii Vasey 

Letterman’s needle grass. Native perennial. 

Stipa miliacea (Linnaeus) Hoover ssp. miliacea 

Smilo, smilo grass, millet mountain-rice. Non-native perennial. 

Stipa nelsonii Scribner ssp. dorei (Barkworth & Maze) Dorn 

Subalpine needle grass. Native perennial. 

Stipa nelsonii Scribner ssp. nelsonii 

Columbian needle grass, Nelson's needle grass. Native perennial. 

Stipa occidentalis Thurber ex Watson var. occidentalis 

Western needle grass. Native perennial. 

Stipa occidentalis Thurber ex Watson var. pubescens (Vasey) Maze, Taylor, & MacBryde 

Common western needle grass. Native perennial. 

Stipa pulchra Hitchcock 

Purple needle grass, nodding needle grass. Native perennial. 

Stipa stillmanii Bolander 

Stillman's needle grass. Native perennial. 

Stipa thurberiana Piper 

Thurber’s needle grass. Native perennial. 

Torreyochloa erecta (Hitchcock) Church 

Spiked false manna grass. Native perennial. 

Torreyochloa pallida (Torrey) Church var. pauciflora (J. Presl) J. I. Davis 

Few-flowered manna grass, pale false manna grass. Native perennial. 

Trisetum canescens Buckley 

Tall trisetum. Native perennial. 

Trisetum cernuum Trinius 

Nodding trisetum. Native perennial. 

Trisetum flavescens (Linnaeus) P. de Beauvois 

Yellow-oat. Non-native perennial. Presumed extirpated. Last collected in 1917. 

Trisetum spicatum (Linnaeus) K. Richter 

Spike trisetum. Native perennial. 

Trisetum wolfii Vasey 

Wolf's trisetum, beardless trisetum. Native perennial. 

Triticum aestivum Linnaeus ssp. aestivum 

Wheat, bread wheat. Non-native annual. Escaped crop plant; also planted for erosion control. 

Ventenata dubia (Leers) Cosson 

North Africa grass. Non-native annual. 

Zizania palustris Linnaeus var. interior (Fassett) Dore 

Wild-rice. Non-native annual-perennial. Persistence questionable. 

GROSSULARIACEAE • Gooseberry Family 

Ribes aureum Pursh var. aureum 

Golden currant. Native shrub. 

Ribes aureum var. gracillimum (Coville & Britton) Jepson 

Bugle currant. Native shrub. 

Ribes binominatum Heller 

Trailing gooseberry. Native shrub. 

Ribes bracteosum Douglas ex Hooker 

Stink currant, skunk currant. Native shrub. 

Ribes californicum Hooker & Arnott var. californicum 

California currant, hill currant, hillside gooseberry. Native shrub. 

Ribes cereum Douglas var. cereum 

Squaw currant, sheep currant, wax currant. Native shrub. 

Ribes divaricatum Douglas var. pubiflorum Koehne 

Straggly currant, straggle bush. Native shrub. 

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Ribes inerme Rydberg var. inerme 

White-stemmed gooseberry, white gooseberry. Native shrub. 

Ribes inerme Rydberg var. klamathense (Coville in Coville & Britton) Jepson 

Klamath gooseberry. Native shrub. 

Ribes lacustre (Persoon) Poiret 

Swamp currant, swamp gooseberry. Native shrub. 

Ribes laxiflorum Pursh 

Trailing black currant, western black currant. Native shrub. CNPS List 4.3 

Ribes lobbii Gray 

Gummy currant, Oregon gooseberry, gummy gooseberry. Native shrub. 

Ribes malvaceum J. E. Smith var. malvaceum 

Chaparral currant, California black currant. Native shrub. 

Ribes marshallii Greene 

Marshall's currant, Hupa gooseberry. Endemic shrub. CNPS List 4.3 

Ribes menziesii Pursh 

Canyon gooseberry. Native shrub. 

Ribes montigenum McClathie 

Alpine prickly currant, mountain gooseberry. Native shrub. 

Ribes nevadense Kellogg 

Sierra currant, mountain pink currant. Native shrub. 

Ribes quercetorum Greene 

Oak woods gooseberry. Native shrub. 

Ribes roezlii Regel var. amictum (Greene) Jepson 

Mendocino gooseberry. Native shrub. CNPS List 4.3 

Ribes roezlii Regel var. cruentum (Greene) Rehder 

Klamath gooseberry. Native shrub. 

Ribes roezlii Regel var. roezlii 

Sierra gooseberry. Native shrub. 

Ribes sanguineum Pursh var. glutinosum (Bentham) Loudon 

Winter currant, pink-flowered currant. Native shrub. 

Ribes sanguineum Pursh var. sanguineum 

Red-flowering currant, blood currant. Native shrub. 

Ribes velutinum Greene 

Plateau gooseberry. Native shrub. 

Ribes victoris Greene 

Victor's gooseberry. Native shrub. 4.3 

Ribes viscosissimum Pursh 

Sticky-flowering currant, sticky currant, mountain currant. Native shrub. 

HALORAGACEAE • Milfoil Family 

Myriophyllum aquaticum (Velloso) Verdcourt 

Milfoil, parrot's feather. Non-native perennial. 

Myriophyllum hippuroides Nuttall ex Torrey & Gray 

Western milfoil. Native perennial. 

Myriophyllum sibiricum Komarov 

American milfoil, northern milfoil. Native perennial. 

Myriophyllum spicatum Linnaeus 

Eurasian water milfoil. Non-native perennial. 

Myriophyllum verticillatum Linnaeus 

Whorl-leaved milfoil. Native perennial. 

HIPPOCASTANACEAE • Buckeye or Horse-Chestnut Family 

Aesculus californica (Spach) Nuttall 

California buckeye, California horse-chestnut. Native shrub-tree. 

HIPPURIDACEAE • Mare’s-Tail Family 

Hippuris vulgaris Linnaeus 

Mare's tail. Native perennial. 

HYDRANGEACEAE • Hydrangea Family 

Philadelphus lewisii Pursh ssp. californicus (Bentham) Munz 

California syringa, mock-orange. Native shrub. 

Philadelphus lewisii Pursh ssp. gordonianus (Lindley) Munz 

Lewis' syringa, mock-orange, Indian arrowhead. Native shrub. 

Whipplea modesta Torrey 

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Yerba de selva, western whipplea, modesty. Native trailing-prostrate shrub. 

HYDROCHARITACEAE • Frog-bit Family 

Egeria densa Planchon 

Waterweed, elodea, Brazilian waterweed. Non-native perennial. 

Elodea canadensis Michaux 

Waterweed. Native perennial. 

Elodea nuttallii (Planchon) St. John 

Nuttall's waterweed. Native perennial. 

Hydrilla verticillata (Linnaeus f.) Royle 

Hydrilla. Non-native perennial. 

Limnobium laevigatum (von Humboldt & Bonpland ex von Willdenow) Heine 

American frog-bit. Native perennial 

Najas flexilis (von Willdenow) Rostkovius & Schmidt 

Slender naiad, water nymph. Native annual. 

Najas guadalupensis (Sprengel) Magnus ssp. guadalupensis 

Southern naiad, water nymph. Native annual. 

Najas marina Linnaeus 

Bushy pondweed, holly-leaved naiad, water nymph, spiny naiad. Native annual. 

HYDROCOTYLACEAE • Pennywort Family 

Hydrocotyle ranunculoides Linnaeus f. 

Water-parsnip. Native perennial. 

Hydrocotyle umbellata Linnaeus 

Marsh-pennywort, sand-parsnip. Native perennial. 

Hydrocotyle verticillata Thunberg 

Whorled marsh-pennywort, spike-parsnip. Native perennial. 

HYDROPHYLLACEAE • Waterleaf Family 

Draperia systyla (Gray) Torrey 

Violet draperia. Native perennial. 

Eriodictyon californicum (Hooker & Arnott) Torrey 

Yerba santa, California mountain balm. Native shrub. 

Hesperochiron californicus (Bentham) Watson 

California monkey-fiddle. Native perennial. 

Hesperochiron pumilus (Grisebach) Porter 

Dwarf hesperochiron, dwarf monkey-fiddle. Native perennial. 

Hydrophyllum capitatum Douglas ex Bentham var. alpinum Watson 

Woollen-breeches. Native perennial. 

Hydrophyllum fendleri (Gray) Heller var. albifrons (Heller) Macbride 

Fendler's waterleaf. Native perennial. 

Hydrophyllum occidentale (Watson) Gray 

California waterleaf, squaw-lettuce. Native perennial. 

Hydrophyllum tenuipes Heller 

Pacific waterleaf. Native perennial. 

Nama aretioides (Hooker & Arnott) Brand 

Purple fiddleleaf. Native annual. 

Nama californicum (Gray) Bacon 

California fiddleleaf. Native annual. 

Nama densum Lemmon var. densum 

Leafy fiddleleaf. Native annual. 

Nama densum Lemmon var. parviflorum (Greenman) C. L. Hitchcock 

Leafy fiddleleaf. Native annual. 

Nama lobbii Gray 

Lobb’s fiddleleaf. Native perennial. 

Nemophila breviflora Gray 

Great Basin nemophila. Native annual. 

Nemophila heterophylla Fischer & Meyer 

Canyon nemophila. Native annual. 

Nemophila menziesii Hooker & Arnott var. atomaria (Fischer & Meyer) Chandler 

White-flowered baby blue-eyes. Native annual. 

Nemophila menziesii Hooker & Arnott var. menziesii 

Baby blue-eyes. Native annual. 

Nemophila parviflora Douglas ex Bentham var. austinae (Eastwood) Brand 

Woodland nemophila. Native annual. 

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Nemophila parviflora Douglas ex Bentham var. parviflora 

Woodland nemophila. Native annual. 

Nemophila pedunculata Douglas ex Bentham 

Meadow nemophila. Native annual. 

Phacelia argentea Nelson & Macbride 

Sand dune phacelia. Native perennial. CNPS List 1B.1 

Phacelia bolanderi Gray 

Bolander's phacelia. Native perennial. 

Phacelia californica von Chamisso 

Rock phacelia, California phacelia. Native perennial. 

Phacelia ciliata Bentham var. ciliata 

Great Valley phacelia. Native annual. 

Phacelia corymbosa Jepson 

Serpentine phacelia. Native perennial. 

Phacelia dalesiana J. T. Howell 

Scott Mtn. phacelia, Trinity phacelia. Endemic perennial. CNPS List 4.3 

Phacelia distans Bentham 

Common phacelia, white-heliotrope. Native annual. 

Phacelia divaricata (Bentham) Gray var. divaricata 

Divaricate phacelia. Native annual. 

Phacelia egena (Greene ex Brand) Greene ex J. T. Howell 

Kaweah River phacelia. Native perennial. 

Phacelia greenei J. T. Howell 

Scott Valley phacelia. Endemic annual. CNPS List 1B.2 

Phacelia hastata Douglas ex Lehman ssp. compacta (Brand) Heckard 

Compact phacelia. Native perennial. 

Phacelia hastata Douglas ex Lehman ssp. hastata 

Silver-leaved phacelia. Native perennial. 

Phacelia heterophylla Pursh ssp. virgata (Greene) Heckard 

Virgate phacelia. Native perennial. 

Phacelia imbricata Greene ssp. imbricata 

Imbricate phacelia. Native perennial. 

Phacelia insularis Munz var. continentis J. T. Howell 

North coast phacelia. Endemic annual. CNPS List 1B.2 

Phacelia leonis J. T. Howell 

Siskiyou phacelia. Endemic annual. CNPS List 1B.3 

Phacelia linearis (Pursh) Holzinger 

Linear-leaved phacelia. Native annual. 

Phacelia malvifolia von Chamisso 

Stinging phacelia. Native annual. 

Phacelia mutabilis Greene 

Changeable phacelia. Native perennial. 

Phacelia nemoralis Greene ssp. nemoralis 

Shade phacelia. Native perennial. 

Phacelia nemoralis Greene ssp. oregonensis Heckard 

Oregon phacelia. Native perennial. 

Phacelia pringlei Gray 

Pringle's phacelia. Endemic annual. 

Phacelia procera Gray 

Tall phacelia. Native perennial. 

Phacelia ramosissima Douglas ex Lehman var. montereyensis Munz 

Branching phacelia. Native perennial. 

Phacelia ramosissima Douglas ex Lehman var. ramosissima 

Branching phacelia. Native perennial. 

Phacelia rattanii Gray 

Rattan's phacelia. Native annual. 

Phacelia suaveolens Greene var. suaveolens 

Sweet-scented phacelia. Native annual. 

Phacelia tanacetifolia Bentham 

Fiddle neck, tansy phacelia, valley fiddle-neck. Native annual. 

Pholistoma auritum (Lindley) Lilja ex Lindley var. auritum 

Fiesta flower. Native annual. 

Romanzoffia californica Greene 

Suksdorf's romanzoffia, mist maiden. Native perennial. 

Romanzoffia sitchensis Bongard 

Sitka romanzoffia. Native perennial. 

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Romanzoffia tracyi Jepson 

Tracy's romanzoffia. Native perennial. CNPS List 2.3 

HYPERICACEAE • St. John's Wort Family 

Hypericum anagalloides von Chamisso & Schlechtendal 

Tinker's penny, creeping St. John's wort. Native annual-perennial. 

Hypericum concinnum Bentham 

Gold-wire. Native perennial. 

Hypericum hookerianum Wight & Arnott 

Hooker’s St. John’s wort. Non-native shrub. 

Hypericum perforatum Linnaeus 

Klamath weed, St. John's wort. Non-native annual-perennial. 

Hypericum scouleri Hooker ssp. scouleri 

Scouler’s St. John’s wort. Native perennial. 

IRIDACEAE • Iris Family 

Chasmanthe floribunda (Salisbury) N. E. Brown 

African cornflag. Non-native perennial. 

Crocosmia x crocosmiiflora (Burbidge & Dean) N. E. Brown [C. aurea x C. pottsii] 

Montbretia. Non-native perennial. Escaped ornamental. 

Iris bracteata Watson 

Siskiyou iris. Endemic perennial. CNPS List 3.3 

Iris chrysophylla T. J. Howell 

Yellow-flowered iris. Native perennial. 

Iris douglasiana Herbert 

Douglas' iris, mountain iris. Native perennial. 

Iris fernaldii R. C. Foster 

Fernald's iris. Native perennial. 

Iris innominata Henderson 

Del Norte Co. iris. Endemic perennial. CNPS List 4.3 

Iris longipetala Herbert in Hooker & Arnott 

Long-petaled iris, coast iris. Native perennial. 

Iris macrosiphon Torrey 

Slender-tubed iris, ground iris. Native perennial. 

Iris missouriensis Nuttall 

Western blue-flag. Native perennial. 

Iris purdyi Eastwood 

Purdy's iris. Native perennial. 

Iris tenax Douglas ex Lindley ssp. klamathensis Lenz 

Orleans iris. Endemic perennial. CNPS List 4.3 

Iris tenuissima Dykes ssp. tenuissima 

Long-tubed iris. Native perennial. 

Iris x thompsonii R. C. Foster [I. douglasiana x I. innominata] 

Thompson’s iris. Native perennial. 

Ixia campanulata Houttuyn 

White-flowered corn-lily. Non-native perennial. 

Ixia maculata Linnaeus 

African corn-lily. Non-native perennial. 

Ixia polystachya Linnaeus 

White-and-yellow-flowered orn-lily. Non-native perennial. 

Olsynium douglasii (Dietrich) Bicknell var. d. 

Douglas' blue-eyed-grass, purple-eyed-grass, grass widows. Native perennial. 

Romulea rosea (Linnaeus) Ecklon var. australis (Ewart) De Vos in Guernsey 

Rosy sand-croccus. Non-native perennial. 

Sisyrinchium bellum Watson 

California blue-eyed-grass. Native perennial. 

Sisyrinchium californicum (Ker-Gawler ex Sims) Dryander in W. Aiton & W. T. Aiton 

Golden-eyed-grass. Native perennial. 

Sisyrinchium elmeri Greene 

Elmer's blue-eyed-grass. Native perennial. 

Sisyrinchium hitchcockii D. M. Henderson 

Hitchcock’s blue-eyed-grass. Native perennial. 

Sisyrinchium idahoense Bicknell var. idahoense 

Idaho blue-eyed-grass. Native perennial. 

Sparaxis tricolor (Schneevoogt) Ker-Gawler 

Harlequin flower, three-colored wand flower. Non-native perennial. 

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Watsonia meriana (Linnaeus) P. Miller 

Watsonia. Non-native perennial. 

JUGLANDACEAE • Walnut Family 

Juglans hindsii Jepson ex R. E. Smith 

Northern California walnut, Hinds' walnut. Native tree. 

Juglans hindsii Jepson x J. nigra Linnaeus 

Black walnut-northern California walnut hybrid 

Juglans nigra Linnaeus 

Black walnut. Non-native tree. 

JUNCACEAE • Rush Family 

Juncus acuminatus Michaux 

Sharp-fruited rush. Native perennial. 

Juncus ambiguus Gussone 

Seaside rush. Native annual. 

Juncus arcticus von Willdenow var. balticus (von Willdenow) Trautvetter 

Baltic rush. Native perennial. 

Juncus arcticus von Willdenow var. mexicanus (von Willdenow ex Roemer & Schultes) Balslev 

Mexican rush. Native perennial. 

Juncus articulatus Linnaeus 

Jointed rush. Native perennial. 

Juncus bolanderi Engelmann 

Bolander's rush. Native perennial. 

Juncus breweri Engelmann 

Brewer’s rush. Native perennial. 

Juncus bufonius Linnaeus var. bufonius 

Toad rush. Native annual. 

Juncus bufonius Linnaeus var. occidentalis F. J. Hermann 

Toad rush. Native annual. 

Juncus capitatus Wiegel 

Leafy-bracted dwarf rush. Non-native annual. 

Juncus confusus Coville 

Colorado rush. Native perennial. 

Juncus covillei Piper var. covillei 

Coville’s rush. Native perennial. 

Juncus covillei Piper var. obtusatus (Engelmann) C. L. Hitchcock 

Coville's rush. Native perennial. 

Juncus drummondii E. Meyer 

Drummond's rush. Native perennial. 

Juncus dubius Engelmann 

Mariposa rush. Native perennial. 

Juncus dudleyi Wiegand 

Dudley's rush. Native perennial. CNPS List 2.3 

Juncus effusus Linnaeus 

Soft rush, bog rush, lamp rush. Native perennial. 

Juncus ensifolius Wikström var. ensifolius 

Dagger-leaved rush. Native perennial. 

Juncus ensifolius Wikström var. montanus (Engelmann) C. L. Hitchcock in C. L. Hitchcock et al. 

Dagger-leaved rush. Native perennial. 

Juncus exiguus (Fernald & Wiegand) H. L. Lint & P. F. Zika 

Soft rush, bog rush. Native perennial. 

Juncus falcatus E. Meyer var. falcatus 

Falcate rush. Native perennial. 

Juncus falcatus E. Meyer var. sitchensis Buchenau 

Falcate rush. Native perennial. 

Juncus hemiendytus F. J. Hermann var. hemiendytus 

Hermann’s dwarf rush. Native annual. 

Juncus hesperius (Piper) H. L. Lint 

Wart-fruited rush. Native perennial. 

Juncus howellii F. J. Hermann 

Howell’s rush. Native perennial. 

Juncus kelloggii Engelmann 

Kellogg's rush. Native annual. 

Juncus laccatus P. F. Zika 

Slender soft rush. Native perennial. 

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Juncus leiospermus F. J. Hermann var. leiospermus 

Red Bluff dwarf rush. Native annual. 1B.1 

Juncus lescurii Bolander 

Salt rush. Native perennial. 

Juncus macrandrus Coville in Abrams 

Long-anthered rush. Native perennial. 

Juncus mertensianus Bongard 

Mertens' rush. Native perennial. 

Juncus nevadensis Watson var. inventus (L. F. Henderson) C. L. Hitchcock 

Dune rush. Native perennial. 

Juncus nevadensis Watson var. nevadensis 

Sierra rush. Native perennial. 

Juncus occidentalis (Coville) Wiegand 

Western rush. Native perennial. 

Juncus orthophyllus Coville 

Straight-leaved rush. Native perennial. 

Juncus oxymeris Engelmann 

Pointed rush. Native perennial. 

Juncus parryi Engelmann 

Parry's rush. Native perennial. 

Juncus patens E. Meyer 

Spreading rush, common rush. Native perennial. 

Juncus phaeocephalus Engelmann 

Brown-headed rush. Native perennial. 

Juncus regelii Buchenau 

Regel's rush. Native perennial. CNPS List 2.3 

Juncus supiniformis Engelmann 

Hair-leaved rush. Native perennial. CNPS List 2.2 

Juncus tenuis von Willdenow 

Yard rush. Native perennial. 

Juncus uncialis Greene 

Twelfth rush, inch-high rush. Native annual. 

Juncus xiphioides E. Meyer 

Iris-leaved rush. Native perennial. 

Luzula comosa E. Meyer 

Pacific wood-rush. Native perennial. 

Luzula divaricata Watson 

Forked wood-rush. Native perennial. 

Luzula parviflora (Ehrhart) Desvaux 

Small-flowered wood-rush. Native perennial. 

Luzula piperi (Coville) M. E. Jones 

Piper’s wood-rush. Native perennial. 

Luzula subcongesta (Watson) Jepson 

Donner wood-rush. Native perennial. 

JUNCAGINACEAE • Arrow-Grass Family 

Lilaea scilloides (Poiret) Hauman 

Flowering-quillwort. Non-native annual. 

Triglochin concinnum Davy var. concinnum 

Arrow-grass, slender arrow-grass. Native perennial. 

Triglochin maritima Linnaeus 

Seaside arrow-grass. Native perennial. 

Triglochin striata Ruiz Lopez & Pavón 

Three-ribbed arrow-grass. Native perennial. 

LABIATAE (LAMIACEAE) • Mint Family 

Agastache urticifolia (Bentham) Kuntze 

Nettle-leaved horse mint. Native perennial. 

Clinopodium douglasii (Bentham) Kuntze 

Yerba buena, Oregon tea. Native shrub. 

Glechoma hederacea Linnaeus 

Ground-ivy, creeping charlie, gill-over-the-ground. Non-native perennial. 

Lamiastrum galeobdolon (Linnaeus) Ehrendorfer & Polatschek 

Yellow archangel. Non-native perennial. 

Lamium amplexicaule Linnaeus 

Dead-nettle, henbit, giraffe head. Non-native annual. 

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Lamium purpureum Linnaeus 

Red dead-nettle, red henbit. Non-native annual. 

Lepechinia calycina (Bentham) Epling 

Pitcher-sage. Native shrub. 

Lycopus americanus Muhlenberg ex Barton 

Water horehound, gypsy-horehound. Native perennial. 

Lycopus uniflorus Michaux 

Northern bugleweed. Native perennial. CNPS List 4.3 

Marrubium vulgare Linnaeus 

Horehound, hoarhound. Non-native perennial. 

Melissa officinalis Linnaeus 

Lemon balm. Non-native perennial. 

Mentha aquatica Linnaeus 

Water mint. Non-native perennial. Historic collections; presumed extirpated. 

Mentha arvensis Linnaeus 

Tule mint, field mint, wild mint. Native perennial. 

Mentha x piperita Linnaeus [M. aquatica x M. spicata] 

Peppermint. Non-native perennial. 

Mentha pulegium Linnaeus 

Pennyroyal. Non-native perennial. 

Mentha spicata Linnaeus 

Spearmint. Non-native perennial. 

Mentha suaveolens Ehrhart 

Apple mint. Non-native perennial. 

Moluccella laevis Linnaeus 

Shell flower. Non-native annual. 

Monardella douglasii Bentham ssp. douglasii 

Douglas' mountain mint, mountain balm. Native annual. 

Monardella glauca Greene 

Mountain mint, mountain balm. Native perennial. 

Monardella odoratissima Bentham ssp. pallida (Heller) Epling 

Mountain mint. Native perennial. 

Monardella odoratissima Bentham ssp. odoratissima 

Alpine mountain balm. Native perennial. 

Monardella purpurea T. J. Howell 

Purple mountain mint. Native perennial. 

Monardella sheltonii (Torrey) T. J. Howell 

Shelton's mountain mint, mountain balm. Native perennial. 

Monardella siskiyouensis Hardham 

Siskiyou mountain mint, mountain balm. Endemic perennial. 

Monardella villosa Bentham ssp. franciscana (Elmer) Jokerst 

Coyote mint. Native perennial. 

Monardella villosa Bentham ssp. globosa (Jepson) Jokerst 

Robust coyote mint. Native perennial. CNPS List 1B.2 

Monardella villosa Bentham ssp. villosa 

Coyote mint. Native perennial. 

Monardella viridis Jepson ssp. viridis 

Green coyote mint. Native perennial. CNPS List 4.3 

Nepeta cataria Linnaeus 

Catnip. Non-native annual-perennial. 

Origanum vulgare Linnaeus 

Oregano. Non-native annual-perennial. 

Pogogyne douglasii Bentham ssp. douglasii 

Douglas' pogogyne. Native annual. 

Pogogyne douglasii Bentham ssp. parviflora (Bentham) J. T. Howell 

Douglas' pogogyne. Native annual. 

Pogogyne serpylloides (Torrey) Gray 

Thyme-like pogogyne. Native annual. 

Pogogyne zizyphoroides Bentham 

Sacramento pogogyne. Native annual. 

Prunella vulgaris Linnaeus var. lanceolata (Barton) Fernald 

Self-heal. Native perennial. 

Prunella vulgaris Linnaeus var. vulgaris 

Self-heal, heal-all. Non-native perennial. 

Pycnanthemum californicum Torrey 

Sierra mint. Native perennial. 

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Salvia apiana Jepson 

White sage. Native shrub. 

Salvia columbariae Bentham 

Chia. Native annual. 

Salvia dorrii (Kellogg) Abrams var. incana (Bentham) Strachan 

Fleshy sage. Native shrub. CNPS List 3 

Salvia sonomensis Greene 

Creeping sage. Native perennial. 

Salvia virgata Jacqin 

Wand sage. Non-native perennial. 

Scutellaria antirrhinoides Bentham 

Snapdragon skullcap. Native perennial. 

Scutellaria californica Gray 

California skullcap. Native perennial. 

Scutellaria galericulata Linnaeus 

Marsh skullcap. Native perennial. CNPS List 2.2 

Scutellaria siphocampyloides Vatke 

Gray-leaved skullcap. Native perennial. 

Scutellaria tuberosa Bentham 

Dannie's skullcap. Native perennial. 

Stachys ajugoides Bentham var. ajugoides 

Bugle hedge-nettle. Native perennial. 

Stachys ajugoides Bentham var. rigida Jepson & Hoover 

Bugle hedge-nettle. Native perennial. 

Stachys albens Gray 

White hedge-nettle. Native perennial. 

Stachys arvensis (Linnaeus) Linnaeus 

Hedge-nettle, field woundwort. Non-native annual. 

Stachys bergii Mulligan & D. Munro 

Berg’s hedge-nettle. Endemic perennial. 

Stachys bullata Bentham 

Hedge-nettle. Native perennial. 

Stachys chamissonis Bentham var. chamissonis 

Coast hedge-nettle, swamp stachys. Native perennial. 

Stachys mexicana Bentham 

Emerson's hedge-nettle. Native perennial. 

Stachys pycnantha Bentham 

Short-spiked hedge-nettle. Native perennial. 

Stachys stricta Greene 

Sonoma hedge-nettle. Native perennial. 

Teucrium fruticans Linnaeus 

Germander. Non-native shrub. Naturalized ornamental. 

Trichostema lanceolatum Bentham 

Turpentine weed, common bluecurls. Native annual. 

Trichostema laxum Gray 

Vinegar weed, camphor weed. Native annual. 

Trichostema oblongum Bentham 

Mountain bluecurls. Native annual. 

Trichostema simulatum Jepson 

Siskiyou bluecurls. Native annual. 

LAURACEAE • Laurel Family 

Laurus nobilis Linnaeus 

Sweet bay, Grecian laurel. Non-native tree. Escaped ornamental. 

Umbellularia californica (Hooker & Arnott) Nuttall var. californica 

California bay, pepper wood, Oregon-myrtle, California-laurel, myrtle wood. Native shrub-tree. 

LEGUMINOSAE (FABACEAE) • Bean, Legume, or Pea Family 

Acacia dealbata Link 

Silver wattle, green wattle. Non-native tree. Escaped ornamental. 

Acacia melanoxylon R. Brown 

Black acacia, blackwood wattle. Non-native tree. Escaped ornamental. 

Acmispon denticulatus (E. Drew) Brouillet 

Toothed trefoil, north lotus, river-bar lotus. Native annual. 

Acmispon grandiflorus (Bentham) Brouillet var. grandiflorus 

Large-leaved trefoil, chaparral lotus. Native perennial. 

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Acmispon heermannii (Durand & Hilgard) Brouillet var. orbicularis (Gray) Brouillet 

Heermann’s bird’s-foot trefoil. Native perennial. 

Acmispon junceus (Bentham) Brouillet biolettii (Greene) Brouillet 

Biolett’s rush-broom. Native perennial. 

Acmispon micranthus (Nuttall ex Torrey & Gray) Brouillet 

Hill lotus. Native annual. 

Acmispon nevadensis (Watson) Brouillet var. douglasii (Greene) Brouillet 

Sierra Nevada trefoil. Native perennial. 

Acmispon rubriflorus (Sharsmith) D. D. Sokoloff 

Red-flowered bird's-foot trefoil. Native annual. 

Acmispon wrangelianus (Fischer & Meyer) D. D. Sokoloff 

Chilean bird’s-foot trefoil. Native annual. 

Amorpha californica Nuttall var. californica 

False indigo. Native shrub. 

Astragalus accidens Watson var. hendersonii (Watson) Jones 

Rouge River rattleweed. Native perennial. 

Astragalus agnicidus Barneby 

Humboldt milkvetch. Endemic perennial. CNPS List 1B.1 • State: endangered. 

Astragalus breweri Gray 

Brewer's milkvetch, Sonoma loco. Native annual. CNPS List 4.2 

Astragalus californicus (Gray) Greene 

Klamath Basin rattleweed. Native perennial. 

Astragalus clevelandii Greene 

Cleveland's milkvetch, canyon loco. Native perennial. CNPS List 4.3 

Astragalus gambelianus Sheldon 

Gambell's dwarf locoweed, little bill loco. Native annual. 

Astragalus inversus M. E. Jones 

Susanville milkvetch. Native perennial. CNPS List 4.3 

Astragalus lentiginosus Hooker var. lentiginosus 

Freckled milkvetch. Native shrub. 

Astragalus nuttallii (Torrey & Gray) J. T. Howell var. virgatus (Gray) Barneby 

Nuttall's locoweed. Native perennial. 

Astragalus pauperculus Greene 

Depauperate milkvetch. Native annual. 4.3 

Astragalus purshii Douglas ex Hooker var. purshii 

Woolly-pod milkvetch, tufted loco, sheep pod, Pursh's woolly-pod. Native perennial. 

Astragalus purshii Douglas ex Hooker var. tinctus M. E. Jones 

Pursh’s milk-vetch. Native perennial. 

Astragalus pycnostachyus Gray var. pycnostachyus 

Marsh locoweed. Native perennial. CNPS List 1B.2 

Astragalus rattanii Gray var. jepsonianus Barneby 

Jepson's milkvetch. Native annual. CNPS List 1B.2 

Astragalus rattanii Gray var. rattanii 

Rattan's milkvetch, Humboldt loco. Native annual. CNPS List 4.3 

Astragalus umbraticus Sheldon 

Bald Mtn. milkvetch, wood loco. Native perennial. CNPS List 2.3 

Astragalus whitneyi Gray var. siskiyouensis (Rydberg) Barneby 

Siskiyou locoweed. Native perennial. 

Cercis californica Torrey ex Bentham 

Western redbud, Judas tree. Native shrub-tree. 

Cytisus scoparius (Linnaeus) Link var. scoparius 

Scotch broom. Non-native shrub. 

Genista linifolia Linnaeus 

Mediterranean broom. Non-native shrub. 

Genista monspesulana (Linnaeus) L. Johnson 

French broom. Non-native shrub. 

Glycyrrhiza lepidota (Nuttall) Pursh 

Wild licorice, American licorice. Native perennial. 

Hoita macrostachya (de Candolle) Rydberg 

Leather root. Native perennial. 

Hoita orbicularis (Lindley) Rydberg 

Round-leaved psoralea. Native perennial. 

Hoita strobilina (Hooker & Arnott) Rydberg 

Loma-prieta. Native perennial. 

Hosackia crassifolia Bentham var. crassifolia 

Broad-leaved trefoil, buck lotus. Native perennial. 

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Hosackia oblongifolia (Bentham) Brouillet var. oblongifolia 

Narrow-leaved trefoil. Native perennial. 

Hosackia pinnatus (Hooker) Abrams 

Pinnate-leaved trefoil, meadow lotus. Native perennial. 

Hosackia stipularis Bentham var. ottleyi (Isely) Brouillet 

Balsam lotus, balsam bird’s-foot trefoil. Native perennial. 

Hosackia stipularis Bentham var. stipularis 

Stipulate trefoil, balsam lotus. Native perennial. 

Hosackia yollabolliensis (Munz) D. D. Sokoloff 

Yolla Bolly Mtns. trefoil. Endemic perennial. CNPS List 4.3 

Lathyrus angulatus Linnaeus 

Angled pea. Non-native vine. 

Lathyrus aphaca Linnaeus 

Yellow vetchling. Non-native vine. 

Lathyrus biflorus T. W. Nelson & J. P. Nelson 

Two-flowered pea. Endemic vine. CNPS List 1B.1 

Lathyrus bijugatus T. White 

Pinewoods vetch. Native vine. 

Lathyrus brownii Eastwood 

Brush pea. Native vine. 

Lathyrus cicera Linnaeus 

Red pea. Non-native vine. 

Lathyrus delnorticus C. L. Hitchcock 

Del Norte pea . Endemic vine. CNPS List 4.3 

Lathyrus glandulosus Broich 

Sticky pea. Endemic vine. CNPS List 4.3 

Lathyrus japonicus von Willdenow 

Beach pea. Native vine. CNPS List 2.1 

Lathyrus jepsonii Greene ssp. californicus (Watson) C. L. Hitchcock 

Jepson's pea. Native vine. 

Lathyrus lanszwertii Kellogg var. aridus (Piper) Jepson 

Nevada pea, mountain pea. Native vine. 

Lathyrus lanszwertii Kellogg var. lanszwertii 

Lanszwert’s pea. Native vine. 

Lathyrus lanszwertii Kellogg var. tracyi (Bradshaw) Isely 

Tracy's pea. Endemic vine. 

Lathyrus latifolius Linnaeus 

Everlasting pea, perennial sweet pea. Non-native vine. 

Lathyrus littoralis (Nuttall ex Torrey & Gray) Endlicher 

Silky beach pea, beach pea. Non-native vine. 

Lathyrus nevadensis Watson ssp. nevadensis 

Nevada pea, Sierra pea. Native vine. 

Lathyrus odoratus Linnaeus 

Sweet pea. Non-native vine. 

Lathyrus palustris Linnaeus var. palustris 

Marsh pea. Native vine. CNPS List 2.2 

Lathyrus palustris Linnaeus var. pilosus (von Chamisso) von Ledebour 

Hairy marsh pea. Native vine. 

Lathyrus pauciflorus Fernald var. utahensis (M. E. Jones) Piper ex R. J. Davis 

Few-flowered vetch. Native vine. 

Lathyrus polyphyllus Nuttall ex Torrey & Gray 

Oregon pea. Native vine. 

Lathyrus sphaericus Retzius 

Grass pea. Non-native vine. 

Lathyrus sulphureus Brewer ex Gray var. sulphureus 

Brewer's pea, snub pea. Native vine. 

Lathyrus tingitinus Linnaeus 

Tangier pea. Non-native vine. 

Lathyrus torreyi Gray 

Redwood pea, Torrey's pea. Native vine. 

Lathyrus vestitus Nuttall ex Torrey & Gray ssp. bolanderi (Watson) C. L. Hitchcock 

Pacific pea, Pacific vetchling. Native vine. 

Lathyrus vestitus Nuttall ex Torrey & Gray ssp. ochropetalus (Piper) C. L. Hitchcock 


Lathyrus vestitus Nuttall ex Torrey & Gray ssp. vestitus 


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Lotus aboriginus Jepson 

Indian-lotus. Native perennial. 

Lotus angustissimus Linnaeus 

Trefoil. Non-native annual. 

Lotus corniculatus Linnaeus 

Bird's-foot trefoil. Non-native perennial. 

Lotus formosissimus Greene 

Witch's teeth, seaside bird’s-foot terfoil. Native perennial. 

Lotus humistratus Greene 

Colchita, foothill bird’s-foot trefoil. Native annual. 

Lotus micranthus Bentham 

Short-flowered bird’s-foot trefoil. Native annual. 

Lotus pedunculatus Cavanilles 

Large bird’s-foot trefoil, big trefoil. Non-native perennial. 

Lotus scoparius (Nuttall in Torrey & Gray) Ottley var. scoparius 

Trefoil, deerweed. Native perennial. 

Lotus unifoliolatus (Hooker) Bentham var. unifoliolatus 

American bird’s-foot trefoil. Native annual. 

Lupinus adsurgens E. Drew var. adsurgens 

Drew's silky lupine. Native perennial. 

Lupinus adsurgens E. Drew var. lilacinus Heller ex C. P. Smith 

Drew’s silky lupine. Native perennial. 

Lupinus adsurgens E. Drew var. undulatus C. P. Smith 

Drew’s silky lupine. Native perennial. 

Lupinus affinis J. G. Agardh 

Fleshy lupine. Native annual. 

Lupinus albicaulis Douglas ex Hooker 

Sickle-seeded lupine, pine lupine. Native perennial. 

Lupinus albifrons Bentham ex Lindley var. albifrons 

Silver lupine, white-leaved bush lupine, Bentham's bush lupine. Native shrub. 

Lupinus albifrons Bentham ex Lindley var. collinus Greene 


Lupinus albifrons var. eminens (Greene) C. P. Smith 


Lupinus albifrons var. flumineus C. P. Smith 


Lupinus andersonii Watson 

Anderson's lupine. Native perennial. 

Lupinus antoninus Eastwood 

Anthony Peak lupine. Endemic perennial. CNPS List 1B.3 

Lupinus arboreus Sims var. arboreus 

Tree lupine, yellow-flowered bush lupine. Non-native shrub. 

Lupinus argenteus Pursh var. argenteus 

Silvery lupine. Native perennial. 

Lupinus bicolor Lindley 

Lindley's annual lupine, dove lupine, miniature lupine. Native annual. 

Lupinus breweri Gray var. breweri 

Brewer's lupine, mat lupine. Native perennial. 

Lupinus croceus Eastwood var. croceus 

Mt. Eddy lupine. Endemic perennial. 

Lupinus croceus Eastwood var. pilosellus (Eastwood) Munz 

Mt. Eddy lupine. Endemic perennial. CNPS List 4.3 

Lupinus densiflorus Bentham 

White-whorl lupine. Native perennial. 

Lupinus densiflorus Bentham var. aureus (Kellogg) Munz 


Lupinus densiflorus Bentham var. densiflorus 


Lupinus densiflorus Bentham var. palustris (Kellogg) C. P. Smith 


Lupinus elmeri Greene var. elmeri 

Elmer’s lupine. Endemic perennial. CNPS List 1B.2 

Lupinus formosus Greene var. formosus 

Summer lupine, late lupine, lunara lupine. Native perennial. 

Lupinus formosus Greene var. robustus (C. P. Smith) Conrad 

Summer lupine. Native perennial. 

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Lupinus klamathensis Eastwood 

Klamath lupine. Endemic perennial. 

Lupinus lapidicola Heller 

Mt. Eddy lupine, Heller's lupine. Endemic perennial. CNPS List 4.3 

Lupinus latifolius J. G. Agardh ssp. latifolius 

Broad-leaved lupine. Native perennial. 

Lupinus latifolius J. G. Agardh ssp. viridifolius (Heller) Kenney & D. Dunn 

Broad-leaved lupine. Native perennial. 

Lupinus lepidus Douglas ex Lindley var. constancei (T. W. Nelson & J. P. Nelson) Isely 

Lassic's lupine. Endemic perennial. CNPS List 1B.2 

Lupinus lepidus Douglas ex Lindley var. lobbii (Watson) C. L. Hitchcock 

Pacific lupine. Native perennial. 

Lupinus lepidus Douglas ex Lindley var. sellulus (Kellogg) Barneby 

Donner Lake lupine. Native perennial. 

Lupinus leucophyllus Douglas ex Lindley 

Western lupine, woolly-leaved lupine, poison lupine. Native perennial. 

Lupinus littoralis Douglas 

Seashore lupine, Chinook-licorice. Native perennial. 

Lupinus luteolus Kellogg 

Keller's lupine, butter lupine. Native annual. 

Lupinus nanus Douglas 

Douglas' annual lupine. Native annual. 

Lupinus obtusilobus Heller 

Blunt-lobed lupine. Native perennial. 

Lupinus onustus Watson 

Plumas lupine, ground lupine. Native perennial. 

Lupinus pachylobus Greene 

Big-pod lupine. Native annual. 

Lupinus polyphyllus Lindley var. burkei (Watson) C. L. Hitchcock 

Big-leaved lupine, blue pod lupine. Native perennial. 

Lupinus polyphyllus Lindley var. pallidipes (Heller) C. P. Smith 


Lupinus polyphyllus Lindley var. polyphyllus 


Lupinus rivularis Douglas ex Lindley 

Riverbank lupine, canyon lupine, nine finger. Native subshrub. 

Lupinus sericatus Kellogg 

Cobb Mtn. lupine, satin lupine. Native perennial. CNPS List 1B.2 

Lupinus subvexus C. P. Smith var. subvexus 

Valley lupine. Native annual. 

Lupinus subvexus C. P. Smith var. transmontana C. P. Smith 

Valley lupine. Native annual. 

Lupinus succulentus Douglas ex Koch 

Succulent annual lupine, arroyo lupine. Native annual-perennial. 

Lupinus sulphureus Douglas ex Hooker var. sulphureus 

Sulfur-flowered lupine. Native perennial. 

Lupinus tracyi Eastwood 

Tracy's lupine. Endemic perennial. CNPS List 4.3 

Lupinus vallicola Heller ssp. apricus (Greene) D. Dunn 

Open lupine. Native annual. 

Lupinus variicolor Steudel 

Varied lupine, particolored lupine, varicolored lupine. Native perennial. 

Medicago arabica (Linnaeus) Hudson 

Spotted medick, spotted bur-clover. Non-native annual. 

Medicago lupulina Linnaeus 

Black medick. Non-native annual. 

Medicago minima (Linnaeus) Bartalini 

Bur medick. Non-native annual. 

Medicago orbicularis (Linnaeus) Bartalini 

Black-disk medick. Non-native annual. 

Medicago polymorpha Linnaeus 

Bur clover. Non-native annual. 

Medicago praecox de Candolle 

Mediterranean medick. Non-native annual. 

Medicago sativa Linnaeus 

Alfalfa, lucerne. Non-native perennial. Escaped crop plant. 

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Melilotus alba Medikus 

White sweetclover. Non-native annual-perennial. 

Melilotus indica (Linnaeus) Allioni 

Annual yellow sweetclover, sour clover. Non-native annual. 

Melilotus officinalis (Linnaeus) Pallas 

Yellow sweetclover. Non-native perennial. 

Pediomelum californicum (Watson) Rydberg 

California psoralea, California Indian breadroot. Native perennial. 

Pickeringia montana Nuttall ex Torrey & Gray ssp. montana 

Chaparral pea, stingaree bush. Native shrub. 

Robinia pseudoacacia Linnaeus 

Black locust. Non-native tree. Escaped ornamental. 

Rupertia physodes (Douglas ex Hooker) Grimes 

California-tea. Native perennial. 

Sesbania punicea (Cavanilles) Bentham 

Rattlebox. Non-native shrub. 

Spartium junceum Linnaeus 

Spanish broom. Non-native shrub. 

Thermopsis californica Watson var. californica 

California golden-banner, California false lupine. Native perennial. 

Thermopsis gracilis T. J. Howell 

Slender golden-banner, slender false lupine. Native perennial. CNPS List 4.3 

Thermopsis robusta T. J. Howell 

Showy golden-banner, robust or showy false lupine. Native perennial. CNPS List 1B.2 

Trifolium albopurpureum Torrey & Gray var. albopurpureum 

Common Indian clover, rancheria clover. Native perennial. 

Trifolium albopurpureum Torrey & Gray var. dichotomum (Hooker & Arnott) Isely 

Branched Indian clover. Native perennial. 

Trifolium albopurpureum Torrey & Gray var. olivaceum (Greene) Isely 

Olive clover. Native perennial. 

Trifolium amoenum Greene 

Showy Indian clover, two-fork clover. Native annual-perennial. CNPS List 1B.1 • Federal: endangered. 

Trifolium arvense Linnaeus 

Rabbit-foot clover. Non-native annual. 

Trifolium barbigerum Torrey var. andrewsii Gray 

Gray’s clover. Native annual. 

Trifolium barbigerum Torrey var. barbigerum 

Bearded clover. Native annual. 

Trifolium bifidum Gray var. bifidum 

Pinole clover, notch-leaved clover. Native annual. 

Trifolium breweri Watson 

Brewer's clover, forest clover. Native perennial. 

Trifolium campestre Schreber 

Field clover, hop clover. Non-native annual. 

Trifolium ciliolatum Bentham 

Tree clover. Native annual. 

Trifolium cyathiferum Lindley 

Bowl clover, mountain clover. Native annual. 

Trifolium depauperatum Desvaux var. depauperatum 

Dwarf balloon sack clover, bladder clover. Native annual. 

Trifolium depauperatum Desvaux var. stenophyllum (Nuttall) McDermott 

Dwarf balloon sack clover, bladder clover. Native annual. 

Trifolium dubium Sibthorp 

Suckling clover, shamrock. Non-native annual. 

Trifolium eriocephalum Nuttall var. eriocephalum 

Woolly-headed clover. Native perennial. 

Trifolium fragiferum Linnaeus 

Strawberry clover. Non-native perennial. 

Trifolium fucatum Lindley 

Sour clover, bull clover, puff clover. Native annual. 

Trifolium glomeratum Linnaeus 

Clustered clover. Non-native annual. 

Trifolium gracilentum Torrey & Gray var. gracilentum 

Pint-point clover. Native annual. 

Trifolium hirtum Allioni 

Rose clover. Non-native annual. 

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Trifolium howellii Watson 

Howell's clover, canyon clover. Native perennial. CNPS List 4.3 

Trifolium hybridum Linnaeus 

Alsike clover, Alsatian clover. Non-native annual-perennial. 

Trifolium incarnatum Linnaeus 

Crimson clover, French clover, Italian clover, CalTrans clover. Non-native annual. 

Trifolium longipes Nuttall ssp. elmeri (Greene) J. Gillett 

Elmer's clover. Native perennial. 

Trifolium longipes Nuttall ssp. hansenii (Greene) J. Gillett 

Hansen's clover. Native perennial. 

Trifolium longipes Nuttall ssp. oreganum (T. J. Howell) J. Gillett 

Oregon clover. Endemic perennial. 

Trifolium longipes Nuttall ssp. shastense (House) J. Gillett 

Shasta clover. Native perennial. 

Trifolium macraei Hooker & Arnott 

Chile clover. Native annual. 

Trifolium macrocephalum (Pursh) Poiret 

Big-headed clover. Native perennial. 

Trifolium microcephalum Pursh 

Small-headed clover, maiden clover. Native annual. 

Trifolium microdon Hooker & Arnott 

Valparaiso clover, square-headed clover. Native annual. 

Trifolium monanthum Gray ssp. monanthum 

Mountain carpet clover. Native perennial. 

Trifolium obtusiflorum Hooker 

Creek clover, clammy clover. Native annual. 

Trifolium oliganthum Steudel 

Few-flowered clover, lanky clover. Native annual. 

Trifolium pratense Linnaeus 

Red clover. Non-native perennial. 

Trifolium productum (Greene) Jepson 

Shasta clover. Native perennial. 

Trifolium repens Linnaeus 

White clover. Non-native perennial. 

Trifolium resupinatum Linnaeus 

Reversed clover. Non-native annual. 

Trifolium siskiyouense J. Gillett 

Siskiyou clover. Endemic perennial. 

Trifolium subterraneum Linnaeus 

Subterranean clover. Non-native annual. 

Trifolium variegatum Nuttall 

White-tipped clover. Non-native annual. 

Trifolium vesiculosum Savi 

Arrow-leaved clover. Non-native annual. 

Trifolium willdenowii Sprengel 

Willdenow’s clover, springbank clover. Native annual. 

Trifolium wormskioldii Lehman 

Wormskiold's clover, cow clover, coast clover. Native perennial. 

Trigonella corniculata (Linnaeus) Linnaeus 

Sickle-fruited fenugreek. Non-native annual. Escaped crop. Historic collection; presumed extirpated. 

Ulex europaeus Linnaeus 

Gorse, furze, prickly-broom. Non-native shrub. 

Vicia americana Muhlenberg ex von Willdenow ssp. americana 

American vetch. Native perennial. 

Vicia benghalensis Linnaeus 

Purple vetch. Non-native annual. 

Vicia cracca Linnaeus ssp. cracca 

Cow vetch, blue vetch, bird vetch, cat peas. Non-native perennial. 

Vicia faba Linnaeus 

Broad bean, horse bean, fava bean. Non-native annual. Escaped crop. 

Vicia gigantea (Hooker) Lassetter & Gunn 

Giant vetch. Native perennial. 

Vicia hassei Watson 

Hasse’s vetch. Native annual. 

Vicia hirsuta (Linnaeus) S. F. Gray 

Hairy vetch, tare, tine tare. Non-native annual. 

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Vicia ludoviciana Nuttall ssp. ludoviciana 

Louisiana vetch. Native annual. 

Vicia lutea Linnaeus 

Smooth yellow vetch. Non-native annual. 

Vicia sativa Linnaeus ssp. nigra (Linnaeus) Ehrhart 

Narrow-leaved vetch. Non-native annual. 

Vicia sativa Linnaeus ssp. sativa 

Common vetch, spring vetch. Non-native annual. 

Vicia tetrasperma (Linnaeus) Moench 

Slender tare. Non-native annual. 

Vicia villosa Roth ssp. varia (Host) Corbiere 

Winter vetch. Non-native annual. 

Vicia villosa ssp. villosa 

Hairy vetch, winter vetch, woolly vetch. Non-native annual. 

LEMNACEAE • Duckwwed Family 

Landoltia punctata (G. Meyer) D. H. Les & D. J. Crawford 

Duck-meal. Native perennial. 

Lemna gibba Linnaeus 

Swollen duckweed. Native perennial. 

Lemna minor Linnaeus 

Common duckweed. Native perennial. 

Lemna minuta von Humboldt, Bonpland, & Kunth 

Least duckweed. Native perennial. 

Lemna trisulca Linnaeus 

Star duckweed. Native perennial. 

Lemna turionifera Landolt 

Turion duckweed. Native perennial. 

Lemna valdiviana Philippi 

Valdive duckweed. Native perennial. 

Spirodela polyrrhiza (Linnaeus) Schleiden 

Greater-duckweed. Native perennial. 

Wolffia borealis (Engelmann) Landolt 

Mud-midget, bogmat. Native perennial. 

Wolffia brasiliensis Weddell 

Brazilian watermeal. Native perennial. 

LENTIBULARIACEAE • Bladderwort Family 

Pinguicula macroceras Link var. macroceras 

Horned butterwort, common butterwort. Native perennial. CNPS List 2.2 

Utricularia gibba Linnaeus 

Swollen-spurred bladderwort. Non-native annual-perennial. 

Utricularia macrorhiza Le Conte 

Common bladderwort, horned bladderwort, greater bladderwort. Native perennial. 

Utricularia subulata Linnaeus 

Zig-zag bladderwort. Native annual-perennial. 

LILIACEAE • Lily Family 

While students of plant families agree that the traditional circumscription of Liliaceae is much too broad, its dismantling into 

over 100 segregate families remains controversial and unsettled. Our plants in northwestern California alone could be placed 

in as many as 25 of them! Because of the unstable and conflicting circumscriptions of these segregate families, we have 

chosen to treat the Liliaceae in a much broader sense. We do, however, place Smilax in Smilacaceae and Odontostomum in 

Tecophilaeaceae, a view that enjoys wide support... among the very small group of people who worry about such arcane 

matters. 

Allium acuminatum Hooker 

Hooker's onion. Native perennial. 

Allium amplectans Torrey 

Narrow-leaved onion. Native perennial. 

Allium bisceptrum Watson var. bisceptrum 

Twin-crested onion. Native perennial. 

Allium bolanderi Watson var. bolanderi 

Bolander's onion. Native perennial. 

Allium bolanderi Watson var. mirabile (L. F. Henderson) McNeal 

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Bolander’s onion. Native perennial. 

Allium campanulatum Watson 

Sierra onion, dusky onion. Native perennial. 

Allium cratericola Eastwood 

Dwarf onion, Cascade onion. Native perennial. 

Allium dichlamydeum Greene 

Coastal onion. Native perennial. 

Allium falcifolium Hooker & Arnott 

Scythe-leaved onion. Native perennial. 

Allium fimbriatum Watson var. fimbriatum 

Fringed onion. Native perennial. 

Allium fimbriatum Watson var. purdyi (Eastwood) Ownbey & Aase 

Purdy's onion. Native perennial. CNPS List 4.3 

Allium hoffmanii Ownbey 

Beegum onion. Endemic perennial. CNPS List 4.3 

Allium membranaceum Ownbey 

Papery onion. Native perennial. 

Allium neapolitanum Cirillo 

White garlic. Native perennial. 

Allium paniculatum Linnaeus var. paniculatum 

Mediterranean onion. Non-native perennial. 

Allium parvum Kellogg 

Dwarf onion. Native perennial. 

Allium porrum Linnaeus 

Leek. Non-native perennial. 

Allium serra McNeal & Ownbey 

Jeweled onion. Native perennial. 

Allium siskiyouense Ownbey 

Siskiyou onion. Endemic perennial. CNPS List 4.3 

Allium tolmiei (Hooker) Baker ex Watson var. tolmiei 

Flat-leaved onion. Native perennial. 

Allium triquetrum Linnaeus 

Three-cornered leek. Non-native perennial. 

Allium unifolium Kellogg 

One-leaved onion. Native perennial. 

Allium validum Watson 

Swamp onion, Pacific onion. Native perennial. 

Allium vineale Linnaeus ssp. vineale 

Wild-garlic. Non-native perennial. 

Amaryllis belladonna Linnaeus 

Naked ladies, belladonna lily. Non-native perennial. Escaped ornamental. 

Asparagus officinalis Linnaeus ssp. officinalis 

Asparagus, garden asparagus. Non-native perennial. Escaped crop plant and ornamental. 

Brodiaea californica Lindley ssp. californica 

California cluster-lily. Native perennial. 

Brodiaea californica Lindley ssp. leptandra (Greene) J. C Pires 

California cluster-lily. Native perennial. 

Brodiaea coronaria (Salisbury) Engler ssp. coronaria 

Harvest cluster-lily. Native perennial. 

Brodiaea coronaria (Salisbury) Engler ssp. rosea (Greene) Niehaus 

Indian Valley cluster-lily. Endemic perennial. CNPS List 1B.1 • State: endangered. 

Brodiaea elegans Hoover ssp. elegans 

Elegant cluster-lily, harvest brodiaea. Native perennial. 

Brodiaea elegans Hoover ssp. hooveri T. Niehaus 

Hoover’s elegant cluster-lily. Native perennial. 

Brodiaea minor (Bentham) Watson 

Vernal pool cluster-lily. Native perennial. 

Brodiaea purdyi Eastwood 

Purdy’s cluster-lily. Native perennial. 

Brodiaea stellaris Watson 

Star-flowered cluster-lily. Native perennial. 

Brodiaea terrestris Kellogg ssp. terrestris 

Dwarf brodiaea, ground brodiaea. Native perennial. 

Calochortus albus Douglas ex Bentham 

Satin bells, fairy lantern, white globe lily. Native perennial. 

Calochortus amabilis Purdy 

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Golden fairy lantern, golden lily bell, Diogenes' lantern. Native perennial. 

Calochortus caeruleus (Kellogg) Watson 

Cat's ear, blue star-tulip, beavertail-grass. Native perennial. 

Calochortus elegans Pursh var. elegans 

Elegant cat's ear, star-tulip. Native perennial. 

Calochortus elegans Pursh var. nanus Wood 

Elegan cat’s ear. Endemic perennial. 

Calochortus greenei Watson 

Greene's mariposa lily. Native perennial. CNPS List 1B.2 

Calochortus luteus Douglas ex Lindley 

Yellow mariposa. Native perennial. 

Calochortus monanthus Ownbey 

Single-flowered mariposa lily. Endemic perennial. Presumed extinct. CNPS List 1A 

Calochortus nudus Watson 

Naked star-tulip. Native perennial. 

Calochortus persistens Ownbey 

Siskiyou mariposa lily. Endemic perennial. CNPS List 1B.2 • State: rare. 

Calochortus splendens Bentham 

Pink mariposa. Native perennial. 

Calochortus superbus Purdy ex J. T. Howell 

Yellow mariposa. Native perennial. 

Calochortus tolmiei Hooker & Arnott 

Tolmie's star-tulip, pussy-ears. Native perennial. 

Calochortus umbellatus Wood 

Oakland star-tulip. Native perennial. 

Calochortus uniflorus Hooker & Arnott 

Large-flowered star-tulip. Native perennial. 

Calochortus venustus Douglas ex Bentham 

Butterfly mariposa lily. Native perennial. 

Calochortus vestae Purdy 

Coast range mariposa. Native perennial. 

Camassia leichtlinii (Baker) Watson ssp. suksdorfii (Greenman) Gould 

Camas, camass. Native perennial. 

Camassia quamash (Pursh) Greene ssp. breviflora Gould 

Small camassia. Native perennial. 

Camassia quamash (Pursh) Greene ssp. linearis Gould 


Camassia quamash (Pursh) Greene ssp. walpolei (Piper) Gould 


Chlorogalum angustifolium Kellogg 

Narrow-leaved soap plant. Native perennial. 

Chlorogalum pomeridianum (de Candolle) Kunth var. minus Hoover 

Wavy-leaved oap plant. Native perennial. CNPS List 1B.2 

Chlorogalum pomeridianum (de Candolle) Kunth var. pomeridianum 

Wavy-leaved soap plant, amole. Native perennial. 

Clintonia andrewsiana Torrey 

Red clintonia. Native perennial. 

Clintonia uniflora (Schultes) Kunth 

Bride's bonnet, queen's cup. Native perennial. 

Cordyline australis (G. Forster) Endlicher 

Cabbage tree. Non-native tree. Escaped ornamental. 

Dichelostemma capitatum Wood ssp. capitatum 

Blue dicks. Native perennial. 

Dichelostemma congestum (Smith) Kuntze 

Ookow. Native perennial. 

Dichelostemma ida-maia (Wood) Greene 

Firecracker plant. Endemic perennial. 

Dichelostemma multiflorum (Bentham) Heller 

Wild-hyacinth. Native perennial. 

Dichelostemma x venustum (Greene) Hoover [D. ida-maia x D. congestum or D. multiflorum] 

Rose firecracker flower. Endemic perennial. 

Dichelostemma volubile (Kellogg) Heller 

Twining snake lily, twining brodiaea. Native perennial. 

Erythronium californicum Purdy 

California fawn lily. Native perennial. 

Erythronium citrinum Watson var. citrinum 

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Lemon-colored fawn lily, cream fawn lily. Endemic perennial. CNPS List 4.3 

Erythronium citrinum Watson var. roderickii Shevock & Allen 

Roderick’s fawn lily. Endemic perennial. CNPS List 1B.3 

Erythronium grandiflorum Pursh ssp. grandiflorum 

Glacier lily. Native perennial. 

Erythronium helenae Applegate 

St. Helena fawn lily. Native perennial. CNPS List 4.2 

Erythronium hendersonii Watson 

Henderson's fawn lily. Endemic perennial. CNPS List 2.3 

Erythronium howellii Watson 

Howell's fawn lily. Endemic perennial. CNPS List 1B.3 

Erythronium klamathense Applegate 

Klamath fawn lily. Endemic perennial. CNPS List 2.2 

Erythronium oregonum Applegate ssp. leucandrum (Applegate) Applegate 

Oregon fawn lily. Native perennial. 

Erythronium revolutum J. E. Smith 

Coast fawn lily. Native perennial. CNPS List 2.2 

Fritillaria affinis (Schultes) Sealy var. affinis 

Mission bells, checker lily. Native perennial. 

Fritillaria agrestis Greene 

Stink bells. Native perennial. CNPS List 4.2 

Fritillaria atropurpurea Nuttall 

Purple fritillary. Native perennial. 

Fritillaria biflora Lindley var. biflora 

Black fritillary, mission bells, chocolate lily. Native perennial. 

Fritillaria gentneri Gilkey 

Gilkey’s fritillary, Gilkey’s mission bells. Endemic perennial. 

Fritillaria glauca Greene 

Siskiyou fritillary. Endemic perennial. 

Fritillaria pluriflora Torrey in Bentham 

Adobe lily. Native perennial. CNPS List 1B.2 

Fritillaria pudica (Pursh) Sprengel 

Yellow fritillary, yellow bell. Native perennial. 

Fritillaria purdyi Eastwood 

Purdy's fritillary. Native perennial. 

Fritillaria recurva Bentham 

Scarlet fritillary. Native perennial. 

Fritillaria roderickii W. Knight 

Roderick’s fritillary. Native perennial. CNPS List 1B.1 

Hastingsia alba (Durand) Watson 

White rush-lily. Native perennial. 

Hastingsia serpentinicola R. Becking 

Serpentine rush-lily. Endemic perennial. 

Kniphofia uvaria (Linnaeus) Oken 

Redhot-poker, torch lily, poker plant. Non-native perennial. Escaped ornamental. 

Leucojum aestivum Linnaeus ssp. aestivum 

Summer snowflake. Non-native perennial. Escaped ornamental. 

Lilium bolanderi Watson 

Bolander's lily. Endemic perennial. CNPS List 4.2 

Lilium columbianum Hanson ex Baker 

Columbia lily, Oregon lily, tiger lily. Native perennial. 

Lilium humboldtii Roezl & Leichtlin ex Duchartre 

Humboldt lily. Native perennial. 

Lilium kelleyanum Lemmon 

Kelley's lily. Native perennial. 

Lilium kelloggii Purdy 

Kellogg's lily. Endemic perennial. CNPS List 4.3 

Lilium maritimum Kellogg 

Coast lily. Native perennial. CNPS List 1B.1 

Lilium occidentale Purdy 

Western lily, Eureka lily. Endemic perennial. CNPS List 1B.1 • Federal: endangered • State: endangered. 

Lilium pardalinum Kellogg ssp. pardalinum 

Leopard lily, tiger lily. Native perennial. 

Lilium pardalinum Kellogg ssp. shastense (Eastwood) M. Skinner 

Shasta lily. Native perennial. 

Lilium pardalinum Kellogg ssp. vollmeri (Eastwood) M. Skinner 

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Vollmer's lily. Endemic perennial. CNPS List 4.3 

Lilium pardalinum Kellogg ssp. wigginsii (Beane & Vollmer) M. Skinner 

Wiggins' lily. Endemic perennial. CNPS List 4.3 

Lilium rubescens Watson 

Redwood lily, lilac lily, chaparral lily, chamise lily. Native perennial. CNPS List 4.2 

Lilium washingtonianum Kellogg ssp. purpurascens (Stearn) M. Skinner 

Purple-flowered Shasta lily, Cascade lily. Native perennial. 

Lilium washingtonianum Kellogg ssp. washingtonianum 

Washington lily. Native perennial. 

Maianthemum dilatatum (Wood) Nelson & Macbride 

False lily-of-the-valley, bead lily. Native perennial. 

Maianthemum racemosum (Linnaeus) Link ssp. amplexicaule (Nuttall) La Frankie 

Feathery false lily-of-the-valley. Native perennial. 

Maianthemum stellatum (Linnaeus) Link 

False Solomon's-seal, star-flower. Native perennial. 

Muilla maritima (Torrey) Watson 

Common muilla. Native perennial. 

Muscari botryoides (Linnaeus) Miller 

Common grape-hyacinth. Non-native perennial. Escaped ornamental. 

Narcissus x medioluteus P. Miller [N. poeticus x N. tazetta] 

Primrose peerless. Non-native perennial. Escaped ornamental. 

Narcissus pseudonarcissus Linnaeus 

Daffodil, narcissus. Non-native perennial. Escaped ornamental. 

Narcissus tazetta Linnaeus 

Bunch-flowered narcissus. Non-native perennial. Escaped ornamental. 

Narthecium californicum Baker 

Bog-asphodel. Native perennial. 

Nothoscordum gracile (Dryander es Aiton) Stearn 

False onion. Non-native perennial. Escaped ornamental. 

Ornithogalum umbellatum Linnaeus 

Star-of-Bethlehem. Non-native perennial. Escaped ornamental. 

Prosartes hookeri Torrey var. hookeri 

Hooker's fairy bells, hairy fairy bells, drops-of-gold. Native perennial. 

Prosartes hookeri Torrey var. trachyandrum (Torrey) Kartesz 

Smooth fairy bells. Native perennial. 

Prosartes parvifolia Watson 

Siskiyou bells. Endemic perennial. 

Prosartes smithii (Hooker) Utech, Shinwari, & Kawano 

Large-flowered fairy bells, fairy lanterns. Native perennial. 

Pseudotrillium rivale (Watson) S. B. Farmer 

Brook wake robin. Native perennial. 

Scoliopus bigelovii Torrey 

Slink pod, foetid adder's-tongue, slink lily. Native perennial. 

Stenanthium occidentale Gray 

Western featherbells. Native perennial. 

Streptopus amplexifolius (Linnaeus) de Candolle in J. Lamarck & A. P. de Candolle 

Twisted stalk, liver-berry. Native perennial. 

Triantha occidentalis (Watson) R. R. Gates ssp. occidentalis 

Sticky false asphodel. Native perennial. 

Trillium albidum J. D. Freeman 

Trillium, wake robin. Native perennial. 

Trillium angustipetalum (Torrey) J. D. Freeman 

Narrow-petaled wake robin. Native perennial. 

Trillium chloropetalum (Torrey) T. J. Howell 

Giant wake robin, giant trillium. Native perennial. 

Trillium kurabayashii J. D. Freeman 

Kurabayash's wake robin. Native perennial. 

Trillium ovatum Pursh var. oettingeri (Munz & Thorne) Case 

Salmon Mtns. wake robin. Endemic perennial. CNPS List 4.2 

Trillium ovatum Pursh var. ovatum 

Western wake robin, trillium, wood trillium. Native perennial. 

Triteleia bridgesii (Watson) Greene 

Bridges' wake robin. Native perennial. 

Triteleia crocea (Wood) Greene 

Yellow triteleia. Endemic perennial. CNPS List 4.3 

Triteleia grandiflora Lindley 

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Wild-hyacinth, blue lily. Native perennial. 

Triteleia hendersonii Greene var. hendersonii 

Henderson's triteleia. Native perennial. CNPS List 2.2 

Triteleia howellii (Watson) Greene 

Howell's triteleia. Native perennial. 

Triteleia hyacinthina (Lindley) Greene 

Wild-hyacinth, white brodiaea. Native perennial. 

Triteleia ixioides (Aiton f.) Greene ssp. anilina (Greene) Lenz 

Pretty face. Native perennial. 

Triteleia ixioides (Aiton f.) Greene ssp. scabra (Greene) Lenz 


Triteleia ixioides (Aiton f.) Greene ssp. unifolia Lenz 


Triteleia laxa Bentham 

Ithuriel's spear, common triteleia, grass nut. Native perennial. 

Triteleia lilacina Greene 

Lilac-flowered wild-hyacinth. Native perennial. 

Triteleia lugens Greene 

Coast range triteleia. Native perennial. 

Triteleia peduncularis Lindley 

Long-rayed triteleia. Native perennial. 

Veratrum californicum Durand var. californicum 

False hellebore, corn lily, skunk-cabbage. Native perennial. 

Veratrum californicum Durand var. caudatum (Heller) C. L. Hitchcock in C. L. Hitchcock et al. 

False hellebore. Native perennial. 

Veratrum fimbriatum Gray 

Fringed false hellebore. Native perennial. CNPS List 4.3 

Veratrum insolitum Jepson 

Siskiyou false hellebore. Native perennial. CNPS List 4.3 

Veratrum viride Aiton var. eschscholzianum (Roemer & Schultes) Breitung 

Green false hellebore, green skunk-cabbage, Indian poke. Native perennial. 

Xerophyllum tenax (Pursh) Nuttall 

Bear-grass, western turkey-beard, elk-grass, fire-lily, Indian basket-grass. Native perennial. 

Zigadenus fontanus Eastwood 

Marsh zygadene. Native perennial. CNPS List 4.2 

Zigadenus fremontii Torrey ex Watson 

Chaparral death-camas, star zygadene. Native perennial. 

Zigadenus micranthus Eastwood 

Small-flowered death-camas. Native perennial. 

Zigadenus paniculatus Nuttall 

Foot-hill death-camas, sand-corn. Native perennial. 

Zigadenus venenosus Watson var. venenosus 

Meadow death-camas. Native perennial. 

LIMNANTHACEAE • False Mermaid or Meadow-Foam Family 

Floerkea proserpinacoides von Willdenow 

False mermaid. Native annual. 

Limnanthes alba Bentham ssp. alba 

White meadow-foam. Native annual. 

Limnanthes bakeri J. T. Howell 

Baker's meadow-foam. Endemic annual. CNPS List 1B.1 • State: rare. 

Limnanthes douglasii R. Brown ssp. douglasii 

Douglas' meadow-foam. Native annual. 

Limnanthes douglasii ssp. nivea (C. T. Mason) C. T. Mason 

Douglas’ meadow-foam. Native annual. 

Limnanthes douglasii ssp. rosea (von Hartwiss ex Bentham) C. T. Mason 

Douglas’ meadow-foam. Native annual. 

Limnanthes floccosa T. J. Howell ssp. bellingerianum (Peck) Arroyo 

Bellinger’s meadow-foam, woolly meadow-foam. Native annual. 

Limnanthes floccosa T. J. Howell ssp. floccosa 

Woolly meadow-foam. Native annual. CNPS List 4.2 

Limnanthes striata Jepson 

Foothill meadow-foam. Native annual. 

LINACEAE • Flax Family 

Hesperolinon adenophyllum (Gray) Small 

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Glandular dwarf-flax. Endemic annual. CNPS List 1B.2 

Hesperolinon bicarpellatum (H. K. Sharsmith) H. K. Sharsmith 

Two-carpellate dwarf-flax. Native annual. CNPS List 1B.2 

Hesperolinon californicum (Bentham) Small 

California dwarf-flax. Native annual. 

Hesperolinon clevelandii (Greene) Small 

Cleveland's dwarf-flax, canyon-flax. Native annual. 

Hesperolinon didymocarpum H. K. Sharsmith 

Lake Co. dwarf-flax. Endemic annual. CNPS List 1B.2 • State: endangered. 

Hesperolinon disjunctum H. K. Sharsmith 

Dwarf-flax. Native annual. 

Hesperolinon drymarioides (Curran) Small 

Dwarf-flax, foothill-flax. Native annual. CNPS List 1B.2 

Hesperolinon micranthum (Gray) Small 

Small-flowered dwarf-flax. Native annual. 

Hesperolinon serpenticum N. McCarten 

Napa dwarf-flax. Native annual. CNPS List 1B.1 

Hesperolinon sharsmithiae R. O’Donnell 

Sharsmith’s dwarf-flax. Native annual. 

Hesperolinon spergulinum (Gray) Small 

Slender dwarf-flax. Native annual. 

Hesperolinon tehamense H. K. Sharsmith 

Tehama dwarf-flax. Endemic annual. CNPS List 1B.3 

Linum bienne Miller 

Narrow-leaved flax. Non-native perennial. 

Linum grandiflorum Desfontaines 

Large-flowered flax. Non-native annual. 

Linum lewisii Pursh var. lewisii 

Western blue flax. Native perennial. 

Linum usitatissimum Linnaeus 

Flax, cultivated flax. Non-native annual. 

Sclerolinon digynum (Gray) Rogers 

Northwestern yellow-flax. Native annual. 

LINNAEACEAE • Twinflower Family 

Linnaea borealis Linnaeus ssp. longiflora (Torrey) Hultén 

Western twinflower, long-tubed twinflower. Native shrub. 

LOASACEAE • Blazing Star or Loasa Family 

Mentzelia dispersa Watson 

Blazing star, stickleaf. Native annual. 

Mentzelia laevicaulis (Douglas ex Hooker) Torrey & Gray var. laevicaulis 

Blazing star. Native perennial. 

Mentzelia lindleyi Torrey & Gray 

Lindley’s blazing star. Native annual. 

Mentzelia micrantha (Hooker & Arnott) Torrey & Gray 

Small-flowered stickleaf. Native annual. 

LYTHRACEAE • Loosestrife Family 

Ammannia coccinea Rottboell 

Valley red stem. Native annual. Historic collections; presumed extirpated. 

Ammannia robusta Heer & Regel 

Valley red stem. Native annual. 

Lythrum californicum Torrey & Gray 

California loosestrife. Native perennial. 

Lythrum hyssopifolia Linnaeus 

Grass poly, hyssop loosestrife. Non-native annual-perennial. 

Lythrum salicaria Linnaeus 

Purple loosestrife. Non-native perennial. 

Lythrum tribracteatum Salzmann ex Sprengel 

Three-bracted loosestrife. Non-native annual. 

Rotala ramosior (Linnaeus) Koehne 

Lowland rotala. Native annual. 

MALVACEAE • Cotton or Mallow Family 

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Abutilon theophrasti Medikus 

Velvet leaf. Non-native annual. 

Fremontodendron californicum (Torrey) Coville 

California flannel bush, fremontia. Native shrub. 

Hibiscus trionum Linnaeus 

Flower-of-an-hour. Non-native annual. 

Iliamna bakeri (Jepson) Wiggins 

Baker’s globe mallow, Baker’s wild hollyhock. Native perennial. CNPS List 4.2 

Iliamna latibracteata Wiggins 

California globe mallow, California wild hollyhock. Native perennial. CNPS List 1B.2 

Iliamna rivularis (Douglas ex Hooker) Greene var. rivularis 

Stream bank wild hollyhock. Native perennial/subshrub. Not collected since 1939.Presumed extinct. 

Lavatera arborea Linnaeus 

Tree-mallow. Native shrub. 

Lavatera cretica Linnaeus 

Cretan mallow, Cornish mallow. Non-native annual-perennial. 

Malacothamnus fasciculatus (Nuttall ex Torrey & Gray) Greene 

Mendocino bush-mallow. Native shrub. 

Malacothamnus fremontii (Torrey ex Gray) Greene 

Fremont’s bush-mallow. Native shrub. 

Malva neglecta Wallroth 

Common mallow. Non-native annual-perennial. 

Malva nicaeensis Allioni 

Bull mallow. Non-native annual-perennial. 

Malva parviflora Linnaeus 

Cheeseweed. Non-native annual. 

Malva sylvestris Linnaeus 

High mallow. Non-native perennial. 

Malvella leprosa (Ortega) Krapovickas 

High mallow, alkali mallow. Native perennial. 

Modiola caroliniana (Linnaeus) G. Don 

Bristly mallow, wheel mallow. Non-native annual-perennial. 

Sidalcea calycosa Jones ssp. calycosa 

Annual sidalcea, swamp checker. Native annual-perennial. 

Sidalcea calycosa Jones ssp. rhizomata (Jepson) Munz 

Pt. Reyes sidalcea. Native perennial. 

Sidalcea diploscypha (Torrey & Gray) Gray 

Fringed sidalcea, cup sidalcea. Native annual. 

Sidalcea glaucescens Greene 

Waxy checker-mallow. Native perennial. 

Sidalcea hartwegii Gray ex Bentham 

Hartweg's sidalcea, valley sidalcea. Native annual. 

Sidalcea hickmanii Greene ssp. pillburiensis S. R. Hill 

Hickman’s sidalcea. Endemic perennial. 

Sidalcea hirsuta Gray 

Hairy sidalcea, wallow sidalcea. Native annual. 

Sidalcea malachroides (Hooker & Arnott) Gray 

Maple-leaved sidalcea, coast checker. Native perennial. 

Sidalcea malvaeflora (de Candolle) Gray ex Bentham ssp. asprella (Greene) C. L. Hitchcock 

Dwarf checker-mallow. Native perennial. 

Sidalcea malvaeflora (de Candolle) Gray ex Bentham ssp. celata (Jepson) C. L. Hitchcock 


Sidalcea malvaeflora (de Candolle) Gray ex Bentham ssp. elegans (Greene) C. L. Hitchcock 

Del Norte checkerbloom. Endemic perennial. 

Sidalcea malvaeflora (de Candolle) Gray ex Bentham ssp. laciniata C. L. Hitchcock 


Sidalcea malvaeflora (de Candolle) Gray ex Bentham ssp. malvaeflora 


Sidalcea malvaeflora (de Candolle) Gray ex Bentham ssp. nana (Jepson) C. L. Hitchcock 

Dwarf checker-mallow. Endemic perennial. 

Sidalcea malvaeflora (de Candolle) Gray ex Bentham ssp. patula C. L. Hitchcock 

Dwarf checker-mallow. Endemic perennial. CNPS List 1B.2 

Sidalcea malvaeflora (de Candolle) Gray ex Bentham ssp. purpurea C. L. Hitchcock 

Purple checkerbloom. Native perennial. CNPS List 1B.2 

Sidalcea oregana (Nuttall ex Torrey & Gray) Gray ssp. eximia (Greene) C. L. Hitchcock 

Oregon sidalcea, Oregon checker. Endemic perennial. CNPS List 1B.2 

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Sidalcea oregana (Nuttall ex Torrey & Gray) Gray ssp. hydrophila (Heller) C. L. Hitchcock 

Oregon sidalcea, Oregon checker. Native perennial. CNPS List 1B.2 

Sidalcea oregana (Nuttall ex Torrey & Gray) Gray ssp. oregana 

Oregon sidalcea, Oregon checker. Native perennial. 

Sidalcea oregana (Nuttall ex Torrey & Gray) Gray ssp. spicata (Regel) C. L. Hitchcock 

Oregon sidalcea, Oregon checker. Native perennial. 

MARTYNIACEAE • Martynia Family 

Proboscidea louisianica (P. Miller) Thellung ssp. louisianica 

Unicorn plant, devil’s claw. Non-native annual. Agricultural weed. 

MELIACEAE • Mahogany Family 

Melia azedarach Linnaeus 

China berry, Persian-lilac. Non-native tree. Escaped ornamental. 

MELIANTHACEAE • Melianthus or Honey Bush Family 

Melianthus major Linnaeus 

Honey bush. Non-native shrub. Escaped ornamental. 

MENYANTHACEAE • Bogbean or Buckbean Family 

Menyanthes trifoliata Linnaeus 

Buckbean, bogbean. Native perennial. 

MOLLUGINACEAE • Carpet Weed Family 

Glinus lotoides Linnaeus 

Sweet juice. Non-native annual. 

Mollugo verticillata Linnaeus 

Indian-chickweed, carpet weed. Non-native annual. 

MORACEAE • Mulberry Family 

Ficus carica Linnaeus 

Fig, cultivated fig, edible fig. Non-native tree. Escaped ornamental and fruit tree. 

Morus alba Linnaeus 

White mulberry. Non-native tree. 

MYRICACEAE • Wax-Myrtle Family 

Morella californica (Chambers & Schlechtendal) Wilbur 

Pacific or California wax-myrtle, Pacific bayberry. Native shrub-tree. 

MYRTACEAE • Eucalyptus or Myrtle Family 

Eucalyptus camaldulensis Dehnhardt 

Red gum. Non-native tree. Escaped ornamental. 

Eucalyptus globulus Labillardière 

Blue gum. Non-native tree. Escaped ornamental. 

Eucalyptus tereticornis J. E. Smith 

Forest red gum, slaty gum. Non-native tree. Escaped ornamental. 

Myrtus communis Linnaeus 

Myrtle. Non-native shrub/tree. 

NYCTAGINACEAE • Four-O'Clock Family 

Abronia latifolia Eschscholtz 

Sand-verbena. Native perennial. 

Abronia maritima Nuttall ex Watson 

Seaside abronia. Native perennial. Historic collections; presumed extirpated. 

Abronia umbellata Lamarck ssp. breviflora (Standley) Munz 

Beach sand-verbena, pink sand-verbena. Native annual. CNPS List 1B.1 

Abronia umbellata Lamarck ssp. umbellata 

Pink sand-verbena. Native annual. 

Mirabilis greenei Watson 

Greene's four-o'clock, Siskiyou four-o’clock. Endemic perennial. 

Mirabilis jalapa Linnaeus 

Four-o'clock. Non-native perennial. 

NYMPHAEACEAE • Water-Lily Family 

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Brasenia schreberi J. F. Gmelin 

Water shield. Native perennial. 

Cabomba caroliniana Gray var. caroliniana 

Fan wort, fish-grass. Native perennial. 

Nuphar polysepala Engelmann 

Indian pond-lily, yellow pond-lily, wokas, cow-lily, yellow water-lily, spadderdock. Native perennial. 

Nymphaea alba Linnaeus 

European white water-lily. Non-native perennial. Escaped ornamental. 

Nymphaea odorata Aiton ssp. odorata 

White water-lily, fragrant water-lily. Non-native perennial. Escaped ornamental. 

OLEACEAE • Ash or Olive Family 

Fraxinus dipetala Hooker & Arnott 

California flowering ash, foothill ash. Native shrub-tree. 

Fraxinus latifolia Bentham 

Oregon ash. Native tree. 

Ligustrum ovalifolium Haussknecht 

California privet. Non-native shrub. Escaped ornamental. 

ONAGRACEAE • Evening-Primrose Family 

Camissonia contorta (Douglas ex Hooker) Raven 

Plains evening-primrose. Native annual. 

Camissonia lacustris Raven 

Grassland sun-cup. Native annual. 

Camissonia strigulosa (Fischer & Meyer) Raven 

Sandy soil sun-cup. Native annual. 

Camissonia cheiranthifolia (Hornemann ex Sprengel) Reimann ssp. cheiranthifolia 

Beach-primrose, dune sun-cup. Native perennial. 

Camissonia cheiranthifolia ssp. suffruticosa (Watson) Raven 

Dune sun-cup. Native perennial. 

Camissonia graciliflora (Hooker & Arnott) Raven 

Hill sun-cup. Native annual. 

Camissonia hirtella (Greene) Raven 

Santa Cruz Island sun-cup. Native annual. 

Camissonia intermedia Raven 

Intermediate sun-cup. Native annual. 

Camissonia lacustris Raven 

Grassland sun-cup. Native annual. 

Camissonia micrantha (Hornemann ex Sprengel) Raven 

Miniature sun-cup. Native annual. 

Camissonia ovata (Nuttall ex Torrey & Gray) Raven 

Golden eggs. Native perennial. 

Camissonia strigulosa (Fischer & Meyer) Raven 

Sandy soil sun-cup. Native annual. 

Chamerion angustifolium (Linnaeus) Holub ssp. circumvagum (Mosquin) Hoch 

Fireweed. Native perennial. 

Chamerion latifolium (Linnaeus) Holub 

Broad-leaved fireweed. Native perennial. 

Circaea alpina Linnaeus ssp. pacifica (Ascherson & Magnus) Raven 

Enchanter's-nightshade. Native perennial. 

Clarkia affinis Lewis & Lewis 

Chaparral clarkia. Native annual. 

Clarkia amoena (Lehman) Nelson & Macbride ssp. amoena 

Farewell-to-spring, summer's darling. Native annual. 

Clarkia amoena (Lehman) Nelson & Macbride ssp. huntiana (Jepson) Lewis & Lewis 

Farewell-to-spring. Native annual. 

Clarkia amoena (Lehman) Nelson & Macbride ssp. whitneyi (Gray) Lewis & Lewis 

Whitney's farewell-to-spring. Endemic annual. CNPS List 1B.1 

Clarkia arcuata (Kellogg) Nelson & Macbride 

Glandular clarkia, glandular fairyfan. Native annual. 

Clarkia borealis E. Small ssp. arida E. Small 

Shasta clarkia. Native annual. 

Clarkia borealis E. Small ssp. borealis 

Northern clarkia. Endemic annual. CNPS List 1B.3 

Clarkia concinna (Fischer & Meyer) Greene ssp. concinna 

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Lovely clarkia, red ribbons. Native annual. 

Clarkia davyi (Jepson) Lewis & Lewis 

Davy's clarkia. Native annual. 

Clarkia gracilis (Piper) Nelson & Macbride ssp. gracilis 

Slender clarkia. Native annual. 

Clarkia gracilis (Piper) Nelson & Macbride ssp. sonomensis (C. L. Hitchcock) Lewis & Lewis 

Sonoma godetia. Native annual. 

Clarkia gracilis (Piper) Nelson & Macbride ssp. tracyi (Jepson) Abdel-Hameed & Snow 

Tracy’s clarkia. Native annual. CNPS List 4.2 

Clarkia heterandra (Torrey) Lewis & Raven 

Butterfly weed. Native annual. 

Clarkia lassenensis (Eastwood) Lewis & Lewis 

Lassen godetia. Native annual. 

Clarkia modesta Jepson 

Waltham Creek clarkia. Native annual. 

Clarkia purpurea (Curtis) Nelson & Macbride ssp. purpurea 

Winecup clarkia. Native annual. 

Clarkia purpurea (Curtis) Nelson & Macbride ssp. quadrivulnera (Douglas) Lewis & Lewis 


Clarkia purpurea (Curtis) Nelson & Macbride ssp. viminea (Douglas) Lewis & Lewis 


Clarkia rhomboidea Douglas 

Diamond clarkia. Native annual. 

Clarkia unguiculata Lindley 

Elegant clarkia. Native annual. 

Epilobium anagallidifolium Lamarck 

Purple cottonweed. Native perennial. 

Epilobium brachycarpum Presl 

Willow herb. Native annual. 

Epilobium canum (Greene) Raven ssp. canum 

California-fuchsia, zauschneria, hummingbird trumpet. Native perennial-shrub. 

Epilobium canum (Greene) Raven ssp. latifolia (Hooker) Raven 

California-fuchsia, zauschneria. Native perennial. 

Epilobium ciliatum Rafinesque ssp. ciliatum 

Fringed willow herb. Native perennial. 

Epilobium ciliatum Rafinesque ssp. glandulosum (Lehman) Hoch & Raven 


Epilobium ciliatum Rafinesque ssp. watsonii (Barbey) Hoch & Raven 


Epilobium clavatum Trelease 

Talus willow herb. Native perennial. 

Epilobium densiflorum (Lindley) Hoch & Raven 

Dense-flowered willow herb. Native annual. 

Epilobium foliosum (Nuttall ex Torrey & Gray) Suksdorf 

California willow herb. Native annual. 

Epilobium glaberrimum Barbey ssp. fastigiatum (Nuttall) Hoch & Raven 

Glaucous willow herb. Native perennial. 

Epilobium glaberrimum Barbey ssp. glaberrimum 

Cliff cottonweed. Native perennial. 

Epilobium halleanum Haussknecht 

Glandular willow herb. Native perennial. 

Epilobium hornemannii Reichenbach ssp. hornemannii 

Hornemann's willow herb. Native perennial. 

Epilobium lactiflorum Haussknecht 

White-flowered willow herb. Native perennial. 

Epilobium luteum Pursh 

Yellow willow herb. Native perennial. CNPS List 2.3 

Epilobium minutum Lindley ex Hooker 

Minute willow herb, chaparral cotton weed. Native annual. 

Epilobium nivium Brand 

Snow Mountain willow herb. Endemic perennial. 1B.2 

Epilobium oreganum Greene 

Oregon fireweed. Native perennial. CNPS List 1B.2 

Epilobium oregonense Haussknecht 

Oregon willow herb, Oregon cotton weed. Native perennial. 

Epilobium pygmaeum (Spegazzini) P. Hoch & Raven 

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Smooth willow herb. Native annual. 

Epilobium rigidum Haussknecht 

Siskiyou Mountains willow herb, creek-fringe. Endemic perennial. CNPS List 4.3 

Epilobium septentrionale (Keck) Raven 

Humboldt County fuchsia. Endemic perennial. 

Epilobium siskiyouense (Munz) P. Hoch & Raven 

Siskiyou fireweed. Endemic perennial. CNPS List 1B.3 

Epilobium torreyi (Watson) P. Hoch & Raven 

Torrey’s fireweed. Native annual. 

Fuchsia magellanica Lamarck 

Hardy fuchsia. Non-native shrub. Escaped ornamental. 

Gayophytum diffusum Torrey & Gray ssp. diffusum 

Spreading groundsmoke. Native annual. 

Gayophytum diffusum Torrey & Gray ssp. parviflorum Lewis & Szweykowski 

Spreading groundsmoke. Native annual. 

Gayophytum heterozygum Lewis & Szweykowski 

Zig-zag groundsmoke. Native annual. 

Gayophytum humile Jussieu 

Dwarf groundsmoke. Native annual. 

Gayophytum racemosum Torrey & Gray 

Black-Foot groundsmoke. Native annual. 

Gayophytum ramosissimum Torrey & Gray 

Pinyon groundsmoke. Native annual. 

Ludwigia grandiflora (M. Micheli) Greuter & Burdet ssp. grandiflora 

Large-flowered primrose-willow. Native perennial. 

Ludwigia palustris (Linnaeus) Elliott 

Marsh-purslane, water-strife. Native perennial. 

Ludwigia peploides (von Humboldt, Bonpland, & Kunth) Raven ssp. peploides 

Floating primrose-willow. Native perennial. 

Oenothera biennis Linnaeus 

Common evening-primrose. Non-native perennial. 

Oenothera elata Kunth ssp. hirsutissima (Gray ex Watson) W. Dietrich 

Hooker’s evening-primrose. Native perennial. 

Oenothera elata Kunth ssp. hookeri (Torrey) W. Dietrich & W. L. Wagner 

Hooker’s evening-primrose. Native perennial. 

Oenothera glazioviana Micheli 

Red-sepal evening-primrose. Non-native perennial. 

Oenothera villosa Thunberg ssp. strigosa (Rydberg) W. Dietrich & Raven 

Hairy evening-primrose. Native perennial. 

Oenothera wolfii (Munz) Raven, W. Dietrich, & Stubbe 

Wolf's evening-primrose. Native perennial. CNPS List 1B.1 

ORCHIDACEAE • Orchid Family 

Calypso bulbosa (Linnaeus) Oakes var. occidentalis (Holzinger) Boivin 

Calypso orchid, calypso, wild calypso, fairy slipper. Native perennial. 

Cephalanthera austiniae (Gray) Heller 

Phantom orchid, snow orchid. Native perennial. 

Corallorhiza maculata (Rafinesque) Rafinesque var. maculata 

Spotted coral root. Native perennial. 

Corallorhiza maculata (Rafinesque) Rafinesque var. occidentalis (Lindley) Ames 

Spotted coral root. Native perennial. 

Corallorhiza mertensiana Bongard 

Merten's coral root, western coral root. Native perennial. 

Corallorhiza striata Lindley var. striata 

Striped coral root. Native perennial. 

Corallorhiza striata Lindley var. vreelandii (Rydberg) L. O. Williams 

Striped coral root. Native perennial. 

Cypripedium californicum Gray 

California lady's-slipper. Native perennial. CNPS List 4.2 

Cypripedium fasciculatum Kellogg ex Watson 

Clustered lady's-slipper. Native perennial. CNPS List 4.2 

Cypripedium montanum Douglas ex Lindley 

Mountain lady's-slipper. Native perennial. CNPS List 4.2 

Cypripedium parviflorum Salisbury var. parviflorum 

Small yellow lady’s slipper. Native perennial. 

Epipactis gigantea Douglas ex Hooker 

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Stream orchis, giant helleborine, chatterbox. Native perennial. 

Epipactis helleborine (Linnaeus) Crantz 

Broad-leaved helleborine. Native perennial. 

Goodyera oblongifolia Rafinesque 

Rattlesnake-plantain. Native perennial. 

Listera caurina Piper 

Northwestern twayblade. Native perennial. 

Listera convallarioides (Swartz) Nuttall 

Broad-lipped twayblade. Native perennial. 

Listera cordata (Linnaeus) R. Brown var. nephrophylla (Rydberg) Hultén 

Western heart-leaved twayblade. Native perennial. CNPS List 4.2 

Piperia candida R. Morgan & J. Ackerman 

White-flowered rein orchid. Native perennial. CNPS List 4.3 

Piperia colemanii R. Morgan & Glicenstein 

Coleman’s rein orchid. Native perennial. 

Piperia elegans (Lindley) Rydberg ssp. elegans 

Elegant piperia. Native perennial. 

Piperia elongata Rydberg ssp. elongata 

Dense-flowered rein orchid. Native perennial. 

Piperia leptopetala Rydberg 

Narrow-petaled rein orchid. Native perennial. 

Piperia michaelii (Greene) Rydberg 

Purple-flowered rein orchid. Native perennial. CNPS List 4.2 

Piperia transversa Suksdorf 

Royal rein orchid. Native perennial. 

Piperia unalascensis (Sprengel) Rydberg 

Alaska piperia, northern piperia. Native perennial. 

Platanthera dilatata (Pursh) Lindley ex Beck var. leucostachys (Lindley) Luer 

White-flowered bog orchid, bog candles. Native perennial. 

Platanthera sparsiflora (Watson) Schlechter 

Canyon bog orchid. Native perennial. 

Platanthera stricta Lindley 

Slender bog orchid. Native perennial. CNPS List 4.2 

Spiranthes porrifolia Lindley 

Western ladies'-tresses. Native perennial. 

Spiranthes romanzoffiana von Chamisso 

Hooded ladies'-tresses. Native perennial. 

OXALIDACEAE • Oxalis or Sorrel Family 

Oxalis albicans von Humboldt, Bonpland, & Kunth ssp. pilosa (Nuttall) Eiten 

Radish-root wood sorrel. Native perennial. 

Oxalis corniculata Linnaeus 

Yellow oxalis, creeping wood sorrel. Non-native perennial. 

Oxalis hirta Linnaeus 

Tropical wood sorrel. Non-native perennial. 

Oxalis incarnata Linnaeus 

Crimson wood sorrel. Non-native perennial. 

Oxalis latifolia Kunth 

Broad-leaved wood sorrel. Non-native perennial. 

Oxalis oregana Nuttall ex Torrey & Gray 

Redwood sorrel, Oregon wood sorrel. Native perennial. 

Oxalis pes-caprae Linnaeus 

Bermuda-buttercup. Non-native perennial. Escaped ornamental. 

Oxalis purpurea Linnaeus 

Purple wood sorrel. Non-native perennial. 

Oxalis radicosa A. Richard 

Dwarf wood sorrel. Non-native perennial. 

Oxalis rubra Saint-Hilaire 

Red oxalis. Non-native perennial. 

Oxalis suksdorfii Trelease 

Suksdorf's wood sorrel. Native perennial. CNPS List 4.3 

Oxalis trilliifolia Hooker 

Trillium-leaved wood sorrel. Native perennial. 

PAEONIACEAE • Paeony Family 

Paeonia brownii Douglas ex Hooker 

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Western paeony. Native perennial. 

PAPAVERACEAE • Poppy Family 

Argemone munita Durand & Hilgard ssp. munita 

Prickly poppy. Native annual-perennial. 

Argemone munita Durand & Hilgard ssp. rotundata (Rydberg) G. Ownbey 

Prickly poppy, chicalote. Native annual-perennial. 

Dendromecon rigida Bentham ssp. rigida 

Tree poppy, bush poppy. Native shrub. 

Dicentra formosa (Haworth) Walpers ssp. formosa 

Pacific bleeding heart. Native perennial. 

Dicentra formosa (Haworth) Walpers ssp. oregana (Eastwood) Munz 

Oregon bleeding heart. Endemic perennial. CNPS List 4.2 

Dicentra pauciflora Watson 

Few-flowered bleeding heart. Native perennial. 

Dicentra uniflora Kellogg 

Steer's head. Native perennial. 

Ehrendorferia chrysantha (Hooker & Arnott) Rylander 

Golden ear-drops. Native perennial. 

Eschscholzia caespitosa Bentham 

Tufted poppy. Native annual. 

Eschscholzia californica von Chamisso in Nees von Esenbeck ssp. californica 

California poppy. Native annual-perennial. 

Eschscholzia hypecoides Bentham 

San Benito poppy. Native annual. CNPS List 4.3 

Eschscholzia lobbii Greene 

Rough-seeded eschscholzia. Native annual. 

Fumaria capreolata Linnaeus 

White ramping fumitory. Non-native annual. 

Fumaria officinalis Linnaeus 

Drug fumitory. Non-native annual. 

Hesperomecon linearis (Bentham) Greene 

Narrow-leaved meconella. Native annual. 

Papaver rhoeas Linnaeus 

Corn poppy. Non-native annual. Escaped ornamental. 

Papaver somniferum Linnaeus 

Opium poppy. Non-native annual. Escaped ornamental. 

Platystemon californicus Bentham 

Cream cups. Native annual. 

Romneya trichocalyx Eastwood 

Matilija poppy. Native shrub. 

Stylomecon heterophylla (Bentham) G. Taylor 

Wind poppy. Native annual. 

PARNASSIACEAE • Grass-of-Parnassus Family 

Parnassia californica (Gray) Greene 

California grass-of-Parnassus. Native perennial. 

Parnassia cirrata Piper var. intermedia (Rydberg) P. K. Holgren & N. H. Holmgren 

Cascade grass-of-Parnassus. Native perennial. 

Parnassia fimbriata König var. fimbriata 

Fringed grass-of-Parnassus. Native perennial. 

PAULOWNIACEAE • Princess Tree Family 

Paulownia tomentosa (Thunberg) Siebold & Zuccarini ex Steudel 

Empress tree. Non-native tree. Escaped ornamental. 

PHYTOLACCACEAE • Pokeweed Family 

Phytolacca americana Linnaeus var. americana 

Pokeweed, poke, pokeberry. Non-native perennial. 

PITTOSPORACEAE • Boxwood Family 

Pittosporum tenuifolium Banks & Solander ex Gaertner 

Pittosporum, tawhiwhi. Non-native tree. Escaped ornamental. 

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PLANTAGINACEAE • Plantago or Plantain Family 

Plantago aristata Michaux 

Bristly plantain, large-bracted plantain. Non-native annual. 

Plantago bigelovii Gray ssp. bigelovii 

Annual coast plantain. Native annual. 

Plantago bigelovii Gray ssp. californica (Greene) Bassett 

Annual coast plantain. Native annual. 

Plantago coronopus Linnaeus 

Crowfoot plantain, cut-leaved plantain, buck-horn plantain. Non-native annual-perennial. 

Plantago elongata Pursh ssp. elongata 

Coast plantain. Native annual. 

Plantago elongata Pursh ssp. pentasperma Bassett 

Coast plantain. Native annual. 

Plantago erecta E. Morris 

California dwarf plantain. Native annual. 

Plantago eriopoda Torrey 

Saline plantain, red-woolly plantain. Native perennial. 

Plantago lanceolata Linnaeus 

English plantain. Non-native perennial. 

Plantago major Linnaeus 

Common or buckhorn or broad-leaved or great plantain, rib wort. Native perennial. 

Plantago maritima Linnaeus var. californica (Fernald) Pilger 

California plantain. Native perennial. 

Plantago maritima Linnaeus var. juncoides (Lamarck) Gray 

Pacific seaside plantain. Native perennial. 

Plantago subnuda Pilger 

Tall coastal plantain. Native perennial. 

Plantago virginica Linnaeus 

Pale-seeded plantain. Native annual-perennial. 

PLATANACEAE • Plane Tree or Sycamore Family 

Platanus racemosa Nuttall 

California sycamore, western sycamore, California plane tree. Native tree. 

PLUMBAGINACEAE • Plumbago Family 

Armeria maritima (Miller) von Willdenow ssp. californica (Boissier) Porsild 

Sea thrift, California thrift, sea-pink. Native perennial. 

Limonium californicum (Boissier) Heller var. californicum 

Sea-lavender, marsh-rosemary. Native perennial. 

POLEMONIACEAE • Phlox Family 

Aliciella leptomeria (Gray) J. M. Porter 

Cheat gily flower, Great Basin gilia 

Allophyllum divaricatum (Nuttall) A. Grant & V. Grant 

Purple false gilia. Native annual. 

Allophyllum gilioides (Bentham) A. Grant & V. Grant ssp. gilioides 

Straggling-gilia. Native annual. 

Allophyllum gilioides (Bentham) A. Grant & V. Grant ssp. violaceum (Heller) Day 

Dense false gilia. Native annual. 

Collomia diversifolia Greene 

Serpentine collomia. Native annual. CNPS List 4.3 

Collomia grandiflora Douglas ex Lindley 

Large-flowered collomia. Native annual. 

Collomia heterophylla Douglas ex Hooker 

Varied-leaved collomia. Native annual. 

Collomia linearis Nuttall 

Narrow-leaved collomia. Native annual. 

Collomia tinctoria Kellogg 

Yellow-staining collomia. Native annual. 

Collomia tracyi Mason 

Tracy's collomia. Native annual. CNPS List 4.3 

Eriastrum abramsii (Elmer) Mason 

Abrams' eriastrum. Native annual. 

Eriastrum brandegeeae Mason 

Brandegee's eriastrum. Native annual. CNPS List 1B.2 

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Gilia capitata Sims ssp. capitata 

Globe gilia, blue-headed gilia. Native annual. 

Gilia capitata Sims ssp. pacifica V. Grant 

Pacific gilia. Native annual. CNPS List 1B.2 

Gilia capitata Sims ssp. tomentosa (Brand) V. Grant 

Blue-headed gilia. Native annual. 

Gilia clivorum (Jepson) V. Grant 

Purple-spotted gilia. Native annual. 

Gilia millefoliata Fischer & Meyer 

Many-leaved gilia. Native annual. CNPS List 1B.2 

Gilia tricolor Bentham ssp. tricolor 

Tricolored gilia, bird's-eyes. Native annual. 

Ipomopsis aggregata (Pursh) V. Grant ssp. formosissima (Greene) Wherry 

Scarlet-gilia. Native perennial. 

Ipomopsis congesta (Hooker) V. Grant ssp. congesta 

Scarlet-gilia. Native perennial. 

Leptosiphon acicularis (Greene) Jepson 

Bristly-linanthus. Native annual. CNPS List 4.2 

Leptosiphon androsaceus Bentham 

Shower-gilia. Native annual. 

Leptosiphon bicolor Nuttall ssp. bicolor 

True babystars. Native annual. 

Leptosiphon bolanderi (Gray) J. M. Porter & L. A. Johnson 

Bolander's-linanthus. Native annual. 

Leptosiphon ciliatus (Bentham) Jepson ssp. ciliatus 

Whisker-brush. Native annual. 

Leptosiphon filipes (Bentham) J. M. Porter & L. A. Johnson 

Filiform-linanthus. Native annual. 

Leptosiphon grandiflorus Bentham 

Large-flowered-linanthus. Native annual. 

Leptosiphon harknessii (Curran) J. M. Porter & L. A. Johnson 

Harkness’ flax flower. Native annual. 

Leptosiphon latisectus (E. G. Buxton) J. M. Porter & L. A. Johnson 

Coast range linanthus. Native annual. CNPS List 4.3 

Leptosiphon liniflorus (Bentham) J. M. Porter & L. A. Johnson 

Narrow-leaved flax flower. Native annual. 

Leptosiphon montanus (Greene) J. M. Porter & L. A. Johnson 

Mustang-clover. Native annual. 

Leptosiphon nuttallii (Gray) J. M. Porter & L. A. Johnson ssp. howellii (T. W. Nelson & Patterson) 

J. M. Porter & L. A. Johnson 

Mt. Tedoc-linanthus. Endemic perennial. CNPS List 1B.3 

Leptosiphon nuttallii (Gray) J. M. Porter & L. A. Johnson ssp. nuttallii 

Nuttall's-linanthus, bush-gilia. Native perennial. 

Leptosiphon parviflorus (Bentham) Greene 

Variable-linanthus. Native annual. 

Leptosiphon pygmaeus (Brand) J. M. Porter & L. A. Johnson ssp. continentalis Raven 

Pigmy-linanthus. Native annual. 

Leptosiphon rattanii (Gray) J. M. Porter & L. A. Johnson 

Rattan's-linanthus. Endemic annual. CNPS List 4.3 

Linanthus ambiguus Greene 

Serpentine linanthus. Native annual. 

Linanthus dichotomus Bentham 

Evening snow. Native annual. 

Linanthus pungens (Torrey) J. M. Porter & L. A. Johnson 

Granite prickly-phlox. Native perennial. 

Microsteris gracilis (Douglas ex Hooker) Greene 

Annual-phlox, slender-phlox. Native annual. 

Navarretia atractyloides (Bentham) Hooker & Arnott 

Holly-leaved pincushion plant. Native annual. 

Navarretia capillaris (Kellogg) Kuntze 

Miniature false gilia. Native annual. 

Navarretia cotulifolia (Bentham) Hooker & Arnott 

Cotula-leaved pincushion plant. Native annual. CNPS List 4.2 

Navarretia divaricata (Torrey ex Gray) Greene ssp. divaricata 

Mountain pincushion plant. Native annual. 

Navarretia divaricata (Torrey ex Gray) Greene ssp. vividior (Jepson & V. Bailey) Mason 

-91-

Mountain pincushion plant. Native annual. 

Navarretia heterandra Mason 

Tehama pincushion plant. Native annual. CNPS List 4.3 

Navarretia intertexta (Bentham) Hooker ssp. intertexta 

Needle-leaved pincushion plant. Native annual. 

Navarretia intertexta (Bentham) Hooker ssp. propinqua (Suksdorf) A. Day 

Needle-leaved pincushion plant. Native annual. 

Navarretia jepsonii V. Bailey ex Jepson 

Jepson's pincushion plant. Native annual. CNPS List 4.3 

Navarretia leptalea (Gray) L. A. Johnson ssp. leptalea 

Bridge’s pincushion plant. Native annual. 

Navarretia leucocephala Bentham ssp. bakeri (Mason) A. Day 

White-flowered pincushion plant. Native annual. CNPS List 1B.1 

Navarretia leucocephala Bentham ssp. leucocephala 

White-flowered pincushion plant. Native annual. 

Navarretia leucocephala Bentham ssp. pauciflora (Mason) A. Day 

Few-flowered pincushion plant. Native annual. CNPS List 1B.1 • Federal: endangered • State: threatened. 

Navarretia leucocephala Bentham ssp. pleiantha (Mason) A. Day 

Many-flowered pincushion plant. Native annual. CNPS List 1B.2 • Federal: endangered • State: endangered. 

Navarretia mellita Greene 

Honey-scented pincushion plant. Native annual. 

Navarretia myersii P. S. Allen & Day ssp. deminuta A. G. Day 

Small pin-cushion pincushion plant. Native annual. 

Navarretia myersii P. S. Allen & Day ssp. myersii 

Meyers’ pin-cushion pincushion plant. Native annual. 

Navarretia pubescens (Bentham) Hooker & Arnott 

Downy pincushion plant. Native annual. 

Navarretia sinistra (M. E. Jones) L. A. Johnson ssp. pinnatisecta (H. Mason & A. Grant) L. A. Johnson 

Alva Day’s pincushion plant. Native annual. 

Navarretia sinistra (M. E. Jones) L. A. Johnson ssp. sinistra 

Alva Day’s pincushion plant. Native annual. 

Navarretia squarrosa (Eschscholtz) Hooker & Arnott 

Skunkweed. Native annual. 

Navarretia subuligera Greene 

Awl-leaved pincushion plant. Native annual. CNPS List 4.3 

Navarretia tagetina Greene 

Marigold pincushion plant. Native annual. 

Navarretia viscidula Bentham ssp. purpurea (Brand) H. Mason 

Sticky pincushion plant. Native annual. 

Navarretia viscidula Bentham ssp. viscidula 

Sticky pin cushion plant. Native annual. 

Phlox adsurgens Torrey ex Gray 

Woodland phlox, periwinkle phlox. Native shrub. 

Phlox austromontana Coville ssp. austromontana 

Mountain phlox. Native perennial. 

Phlox diffusa Bentham ssp. diffusa 

Spreading phlox. Native perennial. 

Phlox hirsuta E. Nelson 

Yreka phlox. Native perennial. 

Phlox longifolia Nuttall 

Long-leaved phlox. Native shrub. 

Phlox rigida Bentham 

Stiff phlox. Native shrub. 

Phlox speciosa Pursh ssp. nitida (Suksdorf) Wherry 

Showy phlox. Native perennial. 

Phlox speciosa ssp. occidentalis (Durand ex Torrey) Wherry 

Showy phlox. Native perennial. 

Polemonium californicum Eastwood 

Low polemonium. Native perennial. 

Polemonium carneum Gray 

Great polemonium, royal sky pilot. Native perennial. 

Polemonium chartaceum H. Mason 

Mason's sky pilot. Native perennial. 

Polemonium micranthum Bentham 

Annual polemonium. Native annual. 

Polemonium occidentale Greene ssp. occidentale 

-92-

Western polemonium. Native perennial. 

Polemonium pulcherrimum Hooker var. pulcherrimum 

Showy polemonium. Native perennial. 

POLYGALACEAE • Milkwort Family 

Polygala californica Nuttall 

Common milkwort, coast polygala, California polygala. Native perennial. 

Polygala cornuta Kellogg var. cornuta 

Sierra milkwort, Sierra polygala, horned polygala. Native perennial. 

POLYGONACEAE • Knotweed or Smartweed Family 

Chorizanthe clevelandii Parry 

Cleveland's chorizanthe. Native annual. 

Chorizanthe douglasii Bentham 

Douglas's spineflower. Native annual. 

Chorizanthe howellii Goodman 

Howell's spineflower. Endemic annual. CNPS List 1B.2 • Federal: endangered • State: threatened. 

Chorizanthe membranacea Bentham 

Pink spineflower. Native annual. 

Chorizanthe polygonoides Torrey & Gray var. polygonoides 

Knotweed spineflower. Native annual. 

Chorizanthe stellulata Bentham 

Scarlet spineflower. Native annual. 

Eriogonum alpinum Engelmann 

Trinity buckwheat . Endemic perennial. CNPS List 1B2 • State: endangered. 

Eriogonum compositum Douglas ex Bentham var. compositum 

Composite buckwheat, large-leaved buckwheat. Native perennial. 

Eriogonum congdonii (S. Stokes) Reveal 

Congdon's buckwheat. Endemic perennial. CNPS List 4.3 

Eriogonum dasyanthemum Torrey & Gray 

Many-flowered buckwheat. Native annual. 

Eriogonum diclinum Reveal 

Jaynes Canyon buckwheat. Endemic perennial. CNPS List 4.3 

Eriogonum douglasii Bentham var. meridionale Reveal 

Douglas’ wild buckwheat. Native perennial. 

Eriogonum elatum Douglas ex Bentham var. elatum 

Tall buckwheat, woolly buckwheat. Native perennial. 

Eriogonum elatum Douglas ex Bentham var. villosum Jepson 

Woolly buckwheat. Native perennial. 

Eriogonum fasciculatum Bentham var. foliolosum (Nuttall) S. Stokes ex Abrams 

California buckwheat. Non-native shrub. 

Eriogonum gracile Bentham var. gracile 

Slender buckwheat. Native annual. 

Eriogonum hirtellum J. T. Howell & Bacigalupi 

Klamath Mtns. buckwheat. Endemic perennial. CNPS List 1B.3 

Eriogonum hirtiflorum Gray ex Watson 

Hairy-flowered buckwheat. Native annual. 

Eriogonum inerme (Watson) Jepson var. inerme 

Unarmed buckwheat. Native annual. 

Eriogonum kelloggii Gray 

Kellogg's buckwheat. Endemic perennial. CNPS List 1B.2 • State: endangered. 

Eriogonum latifolium J. E. Smith in Rees 

Coast buckwheat. Native perennial. 

Eriogonum libertini Reveal 

Dubakella Mtn. buckwheat. Endemic perennial. CNPS List 4.2 

Eriogonum lobbii Torrey & Gray var. lobbii 

Lobb's buckwheat. Native perennial. 

Eriogonum luteolum Greene var. caninum (Greene) Reveal 

Golden carpet buckwheat. Native annual. CNPS List 3.2 

Eriogonum luteolum Greene var. luteolum 

Golden carpet buckwheat. Native annual. 

Eriogonum marifolium Torrey & Gray var. cupulatum (S. Stokes) Reveal 

McCloud wild buckwheat. Native perennial. 

Eriogonum nervulosum (S. Stokes) Reveal 

Snow Mtn. buckwheat. Native perennial. CNPS List 1B.2 

Eriogonum nudum Douglas ex Bentham var. auriculatum (Bentham) Tracy ex Jepson 

-93-

Naked-stemmed buckwheat. Native perennial. 

Eriogonum nudum Douglas ex Bentham var. dedectum (Greene) Jepson 


Eriogonum nudum Douglas ex Bentham var. nudum 

Naked-stemmed buckwheat, tibinagua. Native perennial. 

Eriogonum nudum Douglas ex Bentham var. oblongifolium Watson 


Eriogonum nudum Douglas ex Bentham var. paralinum Reveal 

Naked-stemmed buckwheat, Del Norte buckwheat. Native perennial. CNPS List 2.2 

Eriogonum nudum Douglas ex Bentham var. pubiflorum Bentham in A. de Candolle 


Eriogonum ovalifolium Nuttall var. purpureum (Nelson) Brand 

Cushion buckwheat. Native perennial. 

Eriogonum parvifolium J. E. Smith 

Seacliff wild buckwheat. Native shrub. 

Eriogonum pendulum Watson 

Waldo buckwheat. Endemic shrub. CNPS List 2.2 

Eriogonum pyrolifolium Hooker var. coryphaeum Torrey & Gray 

Shasta buckwheat. Native subshrub. 

Eriogonum roseum Durand & Hilgard var. roseum 

Virgate buckwheat. Native annual. 

Eriogonum siskiyouense Small 

Siskiyou buckwheat. Endemic perennial. CNPS List 4.3 

Eriogonum spergulinum Gray var. reddingianum (Jones) J. T. Howell 

Spurry buckwheat. Native annual. 

Eriogonum strictum Bentham var. greenei (Gray) Reveal 

Greene's buckwheat. Native perennial. 

Eriogonum strictum Bentham var. proliferum (Torrey & Gray) Reveal 

Proliferous buckwheat. Native annual. 

Eriogonum ternatum T. J. Howell 

Ternate buckwheat, Waldo buckwheat. Native perennial. 

Eriogonum tripodum Greene 

Tripod buckwheat. Native perennial. CNPS List 4.2 

Eriogonum umbellatum Torrey var. argus Reveal 

Sulfur-flowered buckwheat. Native perennial. 

Eriogonum umbellatum Torrey var. bahiiforme (Torrey & Gray) Jepson 

Sulfur-flowered buckwheat. Native perennial. CNPS List 4.2 

Eriogonum umbellatum Torrey var. furcosum Reveal 

Sulfur-flowered buckwheat. Native perennial. 

Eriogonum umbellatum Torrey var. goodmanii Reveal 

Goodman's buckwheat. Native perennial. 

Eriogonum umbellatum Torrey var. humistratum Reveal 

Mt. Eddy buckwheat. Native perennial. CNPS List 4.3 

Eriogonum umbellatum Torrey var. lautum Reveal 

Scott Valley sulfur flower. Endemic perennial. 

Eriogonum umbellatum Torrey var. modocense 

Sulfur-flowered buckwheat. Native perennial/subshrub. 

Eriogonum umbellatum Torrey var. nelsoniorum Reveal 

Nelsons’ sulfur flower. Endemic perennial. 

Eriogonum umbellatum Torrey var. polyanthum (Bentham) Jones 

Sulfur-flowered buckwheat, American River sulfur flower. Native perennial. 

Eriogonum umbellatum Torrey var. speciosum (Drew) S. Stokes 

Sulfur-flowered buckwheat. Endemic perennial. 

Eriogonum ursinum Watson var. erubescens Reveal & J. D. Knorr 

Blushing wild buckwheat. Endemic perennial. 

Eriogonum ursinum Watson var. ursinum 

Bear Valley wild buckwheat. Native perennial. 

Eriogonum vimineum Douglas ex Bentham 

Wicker buckwheat. Native annual. 

Eriogonum wrightii Torrey ex Bentham var. trachygonum (Torrey ex Bentham) Jepson 

Wright's buckwheat. Native perennial. 

Muehlenbeckia complexa (A. Cunningham) Meisner 

Maidenhair vine, wire plant. Non-native vine. Escaped ornamental. 

Oxyria digyna (Linnaeus) Hill 

Mountain-sorrel. Native perennial. 

Polygonum amphibium Linnaeus var. emersum Michaux 

-94-

Water smart weed. Native perennial. 

Polygonum argyrocoleon Steudel ex Kuntze 

Silver-leaved knot weed, Persian knot weed. Non-native annual. 

Polygonum aviculare Linnaeus ssp. aviculare 

Knot weed. Native perennial. 

Polygonum aviculare Linnaeus ssp. buxiforme (Small) Costea & Tardif 

Knot weed. Native perennial. Historic collection; persisting? 

Polygonum aviculare Linnaeus ssp. depressum (Meisner) Arcangeli 

Knot weed. Native perennial. 

Polygonum bistortoides Pursh 

Western bistort, smoke weed, lady’s thumb. Native perennial. 

Polygonum bolanderi Brewer ex Gray 

Bolander's knot weed. Native shrub. 

Polygonum californicum Meisner in A. P. de Candolle & A. L. P. P. de Candolle 

California knot weed. Native annual. 

Polygonum capitatum Buchanan-Hamilton ex D. Don 

Pink-headed smart weed. Non-native perennial. Escaped ornamental. 

Polygonum convolvulus Linnaeus 

Black bind weed. Non-native vine. 

Polygonum cuspidatum Siebold & Zuccarini 

Japanese knot weed. Non-native shrub. 

Polygonum davisiae Brewer ex Gray var. davisiae 

Davis’ knot weed. Native perennial. 

Polygogonon davisiae Brewer ex Gray var. glabrum G. N. Jones 

Newberry’s knot weed. Native perennial. 

Polygonum douglasii Greene ssp. douglasii 

Douglas’ knotweed. Native annual. 

Polygonum hydropiper Linnaeus 

Marsh-pepper smart weed. Non-native annual. 

Polygonum hydropiperoides Michaux 

Swamp smart weed. Native perennial. 

Polygonum lapathifolium Linnaeus 

Dock-leaved smartweed. Native annual. 

Polygonum majus (Meisner) Piper 

Large knot weed. Native annual. 

Polygonum minimum Watson 

Leafy dwarf knot weed. Native annual. 

Polygonum paronychia von Chamisso & Schlechtendal 

Beach knot weed. Native subshrub. 

Polygonum parryi Greene 

Parry's knot weed. Native annual. 

Polygonum pensylvanicum Linnaeus 

Pennsylvania smart weed, pink weed. Non-native annual. 

Polygonum persicaria Linnaeus 

Lady’s thumb, redshank. Non-native annual-perennial. 

Polygogonon phytolaccifolium Meisner ex Small 

Poke knot weed. Native perennial. 

Polygonum polygaloides Meisner ssp. confertiflorum (Piper) Hickman 

White-margined knot weed. Native annual. 

Polygonum polygaloides Meisner ssp. kelloggii (Greene) Hickman 

Kellogg's knot weed. Native annual. 

Polygonum polystachyum Meissner 

Himalayan knot weed. Non-native perennial. Escaped ornamental. 

Polygonum punctatum Elliott 

Dotted smart weed. Native annual. 

Polygonum sachalinensis F. Schmidt 

Giant knot weed. Non-native perennial. 

Polygonum sawatchense Small ssp. oblivium Costea & Tardiff 

Sawatch Range knot weed. Native perennial. 

Polygonum sawatchense Small ssp. sawatchense 

Sawatch Range knot weed. Native perennial. 

Polygonum shastense Brewer ex Gray 

Shasta knot weed. Native perennial. 

Polygonum spergulariiforme Meisner ex J. K. Small 

Fall knot weed, spurry knot weed. Native annual. 

Pterostegia drymarioides Fischer & Meyer 

-95-

Woodland thread-stem. Non-native annual. 

Rumex acetosella Linnaeus ssp. acetosella 

Sheep sorrel, red sorrel. Non-native perennial. 

Rumex californicus Rechinger f. 

California willow dock. Native perennial. 

Rumex conglomeratus Murray 

Green dock, clustered dock. Non-native perennial. 

Rumex crassus Rechinger f. 

Fleshy willow dock. Native perennial. 

Rumex crispus Linnaeus var. crispus 

Curly dock. Non-native perennial. 

Rumex maritimus Linnaeus 

Golden dock. Native annual-perennial. 

Rumex obtusifolius Linnaeus 

Bitter dock. Non-native perennial. 

Rumex occidentalis Watson 

Western dock. Native perennial. 

Rumex pulcher Linnaeus 

Dock, fiddle dock. Non-native perennial. 

Rumex salicifolius Weinmann 

Willow-leaved dock. Native perennial. 

Rumex transitorius Rechinger f. 

Pacific willow dock. Native perennial. 

Rumex triangulivalvis (Danser) Rechinger f. 

White dock, triangular-valved dock. Native perennial. 

PONTEDERIACEAE • Pickerel Weed Family 

Heteranthera dubia (Jacqin) MacMillan 

Grass-leaved mud-plantain, water star-grass. Native annual-perennial. 

PORTULACACEAE • Purslane Family 

Calandrinia breweri Watson 

Brewer’s red maids. Native annual. CNPS List 4.2 

Calandrinia ciliata (Ruiz López & Pavón) de Candolle in A. P. de Candolle & A. L. P. P. de Candolle 

Red maids. Native annual. 

Cistanthe monosperma (Greene) Hershkovitz 

One-seeded pussypaws. Native perennial. 

Cistanthe quadripetala (Watson) Hershkovitz 

Four-petaled pussypaws. Native annual. CNPS List 4.3 

Cistanthe umbellata (Torrey) Hershkovitza 

Mt. Hood pussypaws. Native perennial. 

Claytonia cordifolia Watson 

Heart-leaved spring beauty. Native perennial. 

Claytonia exigua Douglas ex Torrey & Gray ssp. exigua 

Serpentine spring beauty. Native annual. 

Claytonia exigua Douglas ex Torrey & Gray 

ssp. glauca (Nuttall ex Torrey & Gray) J. M. Miller & K. L. Chambers 

Serpentine spring beauty. Native annual. 

Claytonia gypsophiloides Fischer & Meyer 

Coast range claytonia. Native annual. 

Claytonia lanceolata Pursh 

Western spring beauty. Native perennial. 

Claytonia nevadensis Watson in Brewer et al. 

Sierra Nevada claytonia. Native perennial. 

Claytonia palustris Swanson & Kelley 

Marsh claytonia. Native perennial. CNPS List 4.3 

Claytonia parviflora Douglas ex Hooker ssp. parviflora 

Stream bank spring beauty. Native annual. 

Claytonia perfoliata Donn ex von Willdenow ssp. intermontana J. M. Miller & K. L. Chambers 

Intermountain miner’s-lettuce. Native annual. 

Claytonia perfoliata Donn ex von Willdenow ssp. mexicana (Rydberg) J. M. Miller & K. L. Chambers 

Miner’s lettuce. Native annual. 

Claytonia perfoliata Donn ex von Willdenow ssp. perfoliata 

Miner's-lettuce, Indian-lettuce. Native annual. 

Claytonia rubra (T. J. Howell) Tidestrom ssp. depressa (Gray) J. M. Miller & K. L. Chambers 

Red-stemmed spring beauty. Native annual. 

-96-

Claytonia rubra (T. J. Howell) Tidestrom ssp. rubra 

Red-stemmed spring beauty. Native annual. 

Claytonia saxosa Brandegee 

Brandegee’s spring beauty. Native annual. 

Claytonia sibirica Linnaeus 

Siberian montia, candy flower. Native annual-perennial. 

Claytonia umbellata Watson 

Great Basin spring beauty. Native perennial. CNPS List 2.3 

Claytonia washingtoniana (Suksdorf) Suksdorf 

Lake Washington spring beauty. Native annual. 

Lewisia cantelovii J. T. Howell 

Cantelow’s bitter root. Native perennial. 

Lewisia columbiana (T. J. Howell) B. L. Robinson ex Gray 

Columbian bitter root. Native perennial. 

Lewisia cotyledon (Watson) B. L. Robinson in Gray et al. var. cotyledon 

Siskiyou lewisia, cliff maids. Endemic perennial. 

Lewisia cotyledon (Watson) B. L. Robinson in Gray et al. var. heckneri (Morton) Munz 

Heckner's lewisia. Endemic perennial. CNPS List 1B.2 

Lewisia cotyledon (Watson) B. L. Robinson in Gray et al. var. howellii (Watson) Jepson 

Howell's lewisia. Endemic perennial. CNPS List 3.2 

Lewisia leeana (Porter) B. L. Robinson in Gray et al. 

Lee's lewisia, quill-leaved lewisia. Native perennial. 

Lewisia nevadensis (Gray) B. L. Robinson in Gray et al. 

Nevada lewisia. Native perennial. 

Lewisia oppositifolia (Watson) B. L. Robinson in Gray et al. 

Opposite-leaved lewisia. Endemic perennial. CNPS List 2.2 

Lewisia pygmaea (Gray) B. L. Robinson in Gray et al. ssp. pygmaea 

Alpine lewisia, dwarf lewisia. Native perennial. 

Lewisia rediviva Pursh ssp. rediviva 

Bitter root. Native perennial. 

Lewisia stebbinsii Gankin & Hildreth 

Stebbins' lewisia. Endemic perennial. CNPS List 1B.2 

Lewisia triphylla (Watson) B. L. Robinson in Gray et al. 

Three-leaved lewisia. Native perennial. 

Lewisia x whiteae Purdy [L. cotyledon x L. leeana] 

Expected because of occurrence of parents in region. 

Montia chamissoi (von Ledebour ex Sprengel) Greene 

Toad-lily, Chamisso’s montia. Native perennial. 

Montia dichotoma (Nuttall) T. J. Howell 

Dwarf montia. Native annual. 

Montia diffusa (Nuttall) Greene 

Diffuse montia, branching montia. Native annual. 

Montia fontana Linnaeus 

Water-chickweed, water montia, blinks, water blinks. Native annual. 

Montia howellii Watson 

Howell's montia. Native annual. CNPS List 2.2 

Montia linearis (Douglas ex Hooker) Greene 

Linear-leaved montia. Native annual. 

Montia parvifolia (Moçiño in de Candolle) Greene var. parvifolia 

Small-leaved montia. Native perennial. 

Portulaca oleracea Linnaeus 

Purslane, little hog weed, pusley, verdolaga. Non-native annual. 

POTAMOGETONACEAE • Pondweed Family 

Potamogeton alpinus Balbis 

Reddish pondweed. Native perennial. 

Potamogeton amplifolius Tuckerman 

Large-leaved pondweed. Native perennial. 

Potamogeton crispus Linnaeus 

Curled-leaved pondweed. Non-native perennial. 

Potamogeton diversifolius Rafinesque 

Rafinesque's pondweed. Native perennial. 

Potamogeton epihydrus Rafinesque 

Nuttall's pondweed. Native perennial. 

Potamogeton foliosus Rafinesque var. fibrillosus (Fernald) R. Haynes & Reveal 

Leafy pondweed. Native perennial. CNPS List 2.2 

-97-

Potamogeton foliosus var. foliosus 

Leafy pondweed. Native perennial. 

Potamogeton gramineus Linnaeus 

Grassy pondweed. Native perennial. 

Potamogeton illinoensis Morong 

Illinois pondweed, shining pondweed. Native perennial. 

Potamogeton natans Linnaeus 

Common floating pondweed, broad pondweed. Native perennial. 

Potamogeton nodosus Poiret 

American pondweed, long-stemmed pondweed. Native perennial. 

Potamogeton pusillus Linnaeus var. pusillus 

Small pondweed, slender pondweed. Native perennial. 

Potamogeton pusillus var. tenuissimus Mertens & Koch 

Small pondweed. Native perennial. 

Potamogeton richardsonii (Bennett) Rydberg 

Richardson's pondweed. Native perennial. 

Potamogeton robbinsii Oakes 

Robbin's pondweed, fern pondweed. Native perennial. CNPS List 2.3 

Potamogeton zosteriformis Fernald 

Eel-grass pondweed. Native perennial. CNPS List 2.2 

Stuckenia filiformis (Persoon) Börner ssp. alpina (Blytt) R. Haynes 

Thread-leaved pondweed. Native perennial. 

Stuckenia pectinata (Linnaeus) Börner 

Sago pondweed, fennel-leaved pondweed. Native perennial. 

Zannichellia palustris Linnaeus 

Horned-pondweed, grass-wrack. Native perennial. 

PRIMULACEAE • Primrose Family 

Anagallis arvensis Linnaeus var. arvensis 

Scarlet pimpernel, poor man's weather-glass. Non-native annual. 

Anagallis minima (Linnaeus) Krause 

Chaffweed. Native annual. 

Anagallis monelli Linnaeus 

Blue pimpernel. Non-native perennial. 

Androsace elongata Linnaeus ssp. acuta (Greene) Robbins 

Rock-jasmine. Native annual. 

Androsace filiformis Retzius 

Slender-stemmed androsace. Native annual. CNPS List 2.3 

Dodecatheon alpinum (Gray) Greene ssp. alpinum 

Alpine shooting star. Native perennial. 

Dodecatheon alpinum (Gray) Greene ssp. majus H. J. Thompson 

Shooting star. Native perennial. 

Dodecatheon clevelandii Greene var. patulum (Greene) Reveal 

Padre’s shooting star. Native perennial. 

Dodecatheon hendersonii Gray 

Henderson's shooting star, California mosquito bills, sailor caps. Native perennial. 

Dodecatheon jeffreyi Van Houtte ssp. jeffreyi 

Jeffrey's shooting star, Sierra sailor caps. Native perennial. 

Glaux maritima Linnaeus 

Sea milkwort, black saltwort. Native perennial. 

Lysimachia thrysiflora Linnaeus 

Tufted loosestrife. Native perennial. 

Primula suffrutescens Gray 

Sierra primula, Sierra primrose. Native perennial. 

Trientalis latifolia Hooker 

Starflower, Indian-potato. Native perennial. 

Trientalis europaea Linnaeus 

Arctic starflower. Native perennial. CNPS List 2.2 

RANUNCULACEAE • Crowfoot or Buttercup Family 

Aconitum columbianum Nuttall ssp. columbianum 

Western monkshood, Columbia monkshood, aconite, wolf's bane. Native perennial. 

Aconitum columbianum Nuttall ssp. viviparum (Greene) Brink 

Western monkshood. Native perennial. 

Actaea rubra (Aiton) von Willdenow ssp. arguta (Nuttall) Hultén 

Baneberry. Native perennial. 

-98-

Anemone deltoidea Hooker 

Columbia windflower. Native perennial. 

Anemone drummondii Watson var. drummondii 

Drummond's windflower. Native perennial. 

Anemone grayii Behr & Kellogg 

Western windflower. Native perennial. 

Anemone lyallii Britton 

Little mountain anemone. Native perennial. 

Anemone multifida Poiret var. multifida 

Windflower, anemone. Native perennial. 

Anemone occidentalis Watson 

Western pasque flower. Native perennial. 

Anemone oregana Gray var. oregana 

Oregon windflower, wood anemone. Native perennial. 

Aquilegia eximia Van Houtte ex Planchon 

Van Houtte's columbine, serpentine columbine. Native perennial. 

Aquilegia formosa Fischer ex de Candolle var. formosa 

Crimson columbine. Native perennial. 

Aquilegia formosa Fischer ex de Candolle var. truncata (Fischer & Meyer) Baker 

Crimson columbine. Native perennial. 

Caltha leptosepala de Candolle 

Marsh-marigold. Native perennial. 

Caltha palustris Linnaeus var. palustris 

Marsh-buttercup. Non-native perennial. 

Clematis lasiantha Nuttall in Torrey & Gray 

Chaparral clematis, pipe-stem. Native vine. 

Clematis ligusticifolia Nuttall in Torrey & Gray 

Western virgin's-bower, pipe stems, traveler’s joy. Native vine. 

Consolida ajacis (Linnaeus) Schur 

Rocket larkspur. Non-native annual. 

Coptis laciniata Gray 

Oregon goldthread. Native perennial. 

Delphinium andersonii Gray 

Desert larkspur. Native perennial. 

Delphinium antoninum Eastwood 

Anthony Peak larkspur. Native perennial. 

Delphinium cardinale Hooker 

Scarlet larkspur. Native perennial. Historic collections; presumed extirpated. 

Delphinium decorum Fischer & Meyer ssp. decorum 

Smooth larkspur, coast larkspur. Native perennial. 

Delphinium decorum Fischer & Meyer ssp. tracyi Ewan 

Tracy's larkspur. Endemic perennial. 

Delphinium depauperatum Nuttall in Torrey & Gray 

Dwarf larkspur. Native perennial. 

Delphinium glaucum Watson 

Mountain larkspur. Native perennial. 

Delphinium hansenii (Greene) Greene ssp. hansenii 

Hansen's larkspur. Native perennial. 

Delphinium hesperium Gray ssp. hesperium 

Western larkspur. Native perennial. 

Delphinium hesperium Gray ssp. pallescens (Ewan) Lewis & Epling 

Pale-flowered western larkspur. Native perennial. 

Delphinium nudicaule Torrey & Gray 

Red larkspur, orange larkspur. Native perennial. 

Delphinium nuttallianum Pritzel in Walpers 

Nuttall's or dwarf or slim or meadow larkspur. Native perennial. 

Delphinium patens Bentham ssp. patens 

Zig-zag larkspur. Native perennial. 

Delphinium trolliifolium Gray 

Cow poison, poison larkspur. Native perennial. 

Delphinium uliginosum Curran 

Swamp larkspur, bog larkspur. Native perennial. CNPS List 4.2 

Delphinium variegatum Torrey & Gray ssp. variegatum 

Royal larkspur. Native perennial. 

Enemion occidentale (Hooker & Arnott) Drummond & Hutchinson 

Western rue-anemone. Native perennial. 

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Enemion stipitatum (Gray) Drummond & Hutchinson 

Siskiyou rue-anemone. Native perennial. 

Myosurus apetalus C. Gay var. montanus (G. R. Campbell) Whitemore 

Bristly mousetail. Native annual. 

Myosurus minimus Linnaeus 

Tiny mousetail. Native annual. 

Ranunculus acris Linnaeus 

Meadow buttercup, tall buttercup. Non-native perennial. 

Ranunculus alismifolius Geyer ex Bentham var. alismellus Gray 

water-plantain buttercup. Native perennial. 

Ranunculus alismifolius Geyer ex Bentham var. alismifolius 

Water-plantain buttercup. Native perennial. 

Ranunculus alismifolius Geyer ex Bentham var. hartwegii (Greene) Jepson 

Hartweg's buttercup. Native perennial. 

Ranunculus aquatilis Linnaeus var. diffusus Withering 

Water buttercup. Native perennial. 

Ranunculus aquatilis Linnaeus var. hispidulus E. Drew 


Ranunculus aquatilis Linnaeus var. subrigidus (E. Drew) Breiter 


Ranunculus arvensis Linnaeus 

Corn crowfoot, hunger weed. Non-native annual-perennial. 

Ranunculus bulbosus Linnaeus 

Bulbous buttercup. Non-native perennial. 

Ranunculus californicus Bentham var. californicus 

California buttercup. Native perennial. 

Ranunculus canus Bentham 

Sacramento Valley buttercup. Native perennial. 

Ranunculus cymbalaria Pursh ssp. saximontanus (Fernald) Thorne 

Alkali buttercup. Native perennial. 

Ranunculus eschscholtzii Schlechtendal var. eschscholtzii 

Eschscholtz's buttercup. Native perennial. 

Ranunculus eschscholtzii Schlechtendal var. suksdorfii (Gray) L. Benson 

Suksdorf's buttercup. Native perennial. 

Ranunculus flabellaris Rafinesque 

Yellow water buttercup. Native perennial. 

Ranunculus flammula Linnaeus var. flammula 

Creeping buttercup, spearwort. Native perennial. 

Ranunculus flammula Linnaeus var. ovalis (Bigelow) L. Benson 

Creeping buttercup, spearwort. Native perennial. 

Ranunculus glaberrimus Hooker var. glaberrimus 

Sagebrush buttercup. Native perennial. 

Ranunculus gormanii Greene 

Gorman's buttercup. Native perennial. 

Ranunculus hebecarpus Hooker & Arnott 

Delicate buttercup. Native annual. 

Ranunculus lobbii (Hiern) Gray 

Lobb’s buttercup. Native annual. CNPS List 4.2 

Ranunculus longirostris Godron 

Long-beaked water crowfoot. Native perennial. 

Ranunculus muricatus Linnaeus 

Spiny-fruited buttercup, prickle-fruited buttercup. Non-native annual-perennial. 

Ranunculus occidentalis Nuttall ex Torrey & Gray var. dissectus L. F. Henderson 

Western buttercup. Native perennial. 

Ranunculus occidentalis Nuttall ex Torrey & Gray var. howellii Greene 

Howell's buttercup. Endemic perennial. 

Ranunculus occidentalis Nuttall ex Torrey & Gray var. occidentalis 


Ranunculus occidentalis Nuttall ex Torrey & Gray var. ultramontanus Greene 


Ranunculus orthorhynchus Hooker var. bloomeri (Watson) L. Benson 

Bloomer's buttercup. Native perennial. 

Ranunculus orthorhynchus Hooker var. orthorhynchus 

Straight-beaked buttercup. Native perennial. 

Ranunculus orthorhynchus Hooker var. platyphyllus Gray 

Straight-beaked buttercup. Native perennial. 

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Ranunculus parviflorus Linnaeus 

Small-flowered buttercup. Non-native annual. 

Ranunculus populago Greene 

Cusick's buttercup. Native perennial. 

Ranunculus pusillus Poiret in Lamarck 

Low buttercup, spearwort. Native perennial. 

Ranunculus repens Linnaeus 

Creeping buttercup, creeping crowfoot. Non-native perennial. 

Ranunculus sardous Crantz 

Hairy buttercup. Non-native annual-perennial. 

Ranunculus sceleratus Linnaeus var. multifidus Nuttall 

Cursed crowfoot. Native annual. 

Ranunculus uncinatus D. Don in G. Don var. parviflorus (Torrey) L. Benson 

Woodland buttercup. Native perennial. 

Ranunculus uncinatus D. Don in G. Don var. uncinatus 

Woodland buttercup. Native perennial. 

Thalictrum fendleri Engelmann ex Gray var. fendleri 

Fendler's meadow-rue. Native perennial. 

Thalictrum fendleri Engelmann ex Gray var. polycarpum Torrey 

Fendler’s meadow-rue. Native perennial. 

Thalictrum occidentale Gray 

Western meadow-rue. Native perennial. 

Trautvetteria caroliniensis (Walter) Vail 

False bugbane. Native perennial. 

RESEDACEAE • Migonette Family 

Reseda alba Linnaeus 

White mignonette. Non-native perennial. 

Reseda lutea Linnaeus 

Yellow mignonette. Non-native perennial. 

Reseda luteola Linnaeus 

Dyer's rocket. Non-native perennial. 

RHAMNACEAE • Buckthorn Family 

Ceanothus confusus J. T. Howell 

Rincon Ridge ceanothus. Native shrub. CNPS List 1B.1 

Ceanothus cordulatus Kellogg 

Mountain whitethorn, whitethorn, snow brush. Native shrub. 

Ceanothus cuneatus (Hooker) Nuttall ex Torrey & Gray var. cuneatus 

Buck brush, wedge-leaved ceanothus. Native shrub. 

Ceanothus cuneatus (Hooker) Nuttall ex Torrey & Gray var. ramulosus Greene 

Buck brush, wedge-leaved ceanothus. Native shrub. 

Ceanothus divergens Parry 

Calistoga ceanothus. Native shrub. 

Ceanothus diversifolius Kellogg 

Pine mat, trailing ceanothus. Native shrub. 

Ceanothus foliosus Parry var. foliosus 

Wavy-leaved ceanothus. Native shrub. 

Ceanothus foliosus Parry var. vineatus McMinn 

Vine Hill ceanothus. Native shrub. CNPS List 1B.1 

Ceanothus gloriosus J. T. Howell var. exaltatus J. T. Howell 

Glory bush. Native shrub. CNPS List 4.3 

Ceanothus gloriosus J. T. Howell var. gloriosus 

Pt. Reyes ceanothus, glory mat. Native shrub. CNPS List 4.3 

Ceanothus griseus (Trelease) McMinn 

Carmel ceanothus. Native shrub. 

Ceanothus incanus Torrey & Gray 

Whitethorn, coast whitethorn, Mendocino whitethorn. Native shrub. 

Ceanothus integerrimus Hooker & Arnott 

Deer brush. Native shrub. 

Ceanothus jepsonii Greene ssp. albiflorus (J. T. Howell) C. Schmidt 

Jepson's ceanothus. Native shrub. 

Ceanothus jepsonii Greene ssp. jepsonii 

Jepson's ceanothus, musk bush. Native shrub. 

Ceanothus lemmonii Parry 

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Lemmon's ceanothus, Plumas bush. Native shrub. 

Ceanothus oliganthus Nuttall ssp. oliganthus 

Hairy ceanothus. Native shrub. 

Ceanothus oliganthus ssp. sorediatus (Hooker & Arnott) C. Schmidt 

Jim brush. Native shrub. 

Ceanothus parryi Trelease 

Lady bush, Parry's ceanothus. Native shrub. 

Ceanothus pinetorum Coville 

Coville’s ceanothus, Kern River buck brush. Native shrub. 

Ceanothus prostratus Bentham 

Mahala mat, squaw carpet. Native shrub. 

Ceanothus pumilus Greene 

Siskiyou ceanothus, sea mat. Native shrub. 

Ceanothus purpureus Jepson 

Holly-leaved ceanothus. Native shrub. 

Ceanothus sanguineus Pursh 

Northern buck brush, Oregon-tea tree, red-stemmed ceanothus. Native shrub. 

Ceanothus thyrsiflorus Eschscholtz 

Blue blossom, blue brush. Native shrub. 

Ceanothus velutinus Douglas ex Hooker var. hookeri M. C. Johnston 

Tobacco brush, snow bush. Native shrub. 

Ceanothus velutinus Douglas ex Hooker var. x lorenzenii (Jepson) McMinn [C. velutinus x C. cordulatus] 

Tobacco brush, snow bush. Native shrub. 

Ceanothus velutinus Douglas ex Hooker var. velutinus 

Tobacco brush, sticky-laurel, snow bush. Native shrub. 

Frangula californica (Eschscholtz) Gray ssp. californica 

California coffee berry, coast coffee berry. Native shrub. 

Frangula californica (Eschscholtz) Gray ssp. crassifolia (Jepson) Kartesz & Gandhi 

Thick-leaved coffee berry. Native shrub. 

Frangula californica (Eschscholtz) Gray ssp. occidentalis (T. J. Howell) Kartesz & Gandhi 

California coffee berry. Native shrub. 

Frangula californica (Eschscholtz) Gray ssp. tomentella (Bentham) Kartesz & Gandhi 

Chaparral coffee berry, hoary coffee berry. Native shrub. 

Frangula purshiana (de Candolle) Cooper ssp. annonifolia (Greene) J. O. Sawyer & S. W. Edwards 

Cascara. Endemic shrub. 

Frangula purshiana (de Candolle) Cooper ssp. purshiana 

Cascara, cascara sagrada. Native shrub. 

Frangula rubra (Greene) V. Grubov ssp. obtusissima (Greene) Kartesz & Gandhi 

Coffee berry. Native shrub. 

Frangula rubra (Greene) V. Grubov ssp. rubra 

Sierra coffee berry, mountain pigeon berry. Native shrub. 

Rhamnus crocea Nuttall var. crocea 

Spiny red berry. Native shrub. 

Rhamnus ilicifolia Kellogg 

Holly-leaved buckthorn, holly-leaved coffee berry. Native shrub. 

ROSACEAE • Rose Family 

Acaena nova-zelandiae T. Kirk 

Biddi-biddi. Non-native perennial. 

Adenostoma fasciculatum Hooker & Arnott var. fasciculatum 

Chamise, greasewood. Native shrub. 

Agrimonia gryposepala Wallroth 

Agrimony, tall hairy agrimony. Native perennial. 

Amelanchier alnifolia (Nuttall) Nuttall ex Roemer var. pumila (Torrey & Gray) Schneider 

Dwarf service berry. Native shrub. 

Amelanchier alnifolia (Nuttall) Nuttall ex Roemer var. semiintegrifolia (Hooker) C. L. Hitchcock 

Western service berry. Native shrub. 

Amelanchier utahensis Koehne var. utahensis 

Utah service berry. Native shrub. 

Aphanes arvensis Linnaeus 

Lady's mantle, dew cup. Native annual. 

Aruncus dioicus (Walter) Fernald var. acuminatus (Rydberg) Hara 

Goat's beard, western bride’s feather. Native perennial. 

Cercocarpus ledifolius Nuttall ex Torrey & Gray var. intermontanus N. Holmgren 

Curl-leaved mountain-mahogany. Native shrub. 

Cercocarpus montanus Rafinesque var. glaber (Watson) F. L. Martin 

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California mountain-mahogany, California hard-tack, birch-leaf mountain-mahogany. Native shrub. 

Cercocarpus montanus Rafinesque var. macrourus (Rydberg) F. L. Martin 

Klamath Mtn. mountain-mahogany. Native shrub. 

Chamaebatiaria millefolium (Torrey) Maximowicz 

Fern bush. Native shrub. Cited for Klamath Region in Hickman (1993). No specimens seen. 

Comarum palustre Linnaeus 

Marsh cinquefoil, purple marshlocks, marsh cow berry. Native shrub. 

Cotoneaster franchetii Boissier 

Orange cotoneaster. Non-native shrub. 

Cotoneaster lacteus W. W. Smith 

Milk-flowered cotoneaster. Non-native shrub. 

Cotoneaster pannosa Franchet 

Silver-leaved cotoneaster. Non-native shrub. 

Cotoneaster simonsii Baker 

Simon’s cotoneaster. Non-native shrub. 

Crataegus douglasii Lindley 

Douglas' hawthorn, western black haw, black haw. Native shrub-tree. 

Crataegus monogyna von Jacquin 

English hawthorn. Non-native shrub. 

Crataegus suksdorfii (Sargent) Kruschke 

Black hawthorn. Native shrub-tree. 

Dasiphora fruticosa (Linnaeus) Rydberg ssp. floribunda (Pursh) Kartesz 

Shrub [-by] cinquefoil. Native shrub. 

Fragaria chiloensis (Linnaeus) Duchesne 

Beach strawberry, Chilean strawberry. Native perennial. 

Fragaria vesca Linnaeus 

Wood strawberry. Native perennial. 

Fragaria virginiana Duchesne 

Mountain strawberry. Native perennial. 

Drymocallis glandulosa (Lindley) Rydberg var. glandulosa 

Sticky cinquefoil. Native perennial. 

Drymocallis glandulosa (Lindley) Rydberg var. reflexa (Greene) Ertter 


Drymocallis glandulosa (Lindley) Rydberg var. wrangelliana (Fischer & Avé-Lallemant) Ertter 


Drymocallis lactea (Greene) Rydberg var. austiniae (Jepson) Ertter 

Austin’s wood beauty, Austin’s sticky cinquefoil. Native perennial. 

Drymocallis pseudorupestris (Rydberg) Rydberg var. saxicola Ertter 

Cliff wood beauty. Native perennial. 

Drymocallis rhomboidea (Rydberg) Rydberg 


Geum aleppicum von Jacquin 

Aleppo avens. Native perennial. CNPS List 2.2 

Geum macrophyllum von Willdenow var. macrophyllum 

Avens, large-leaved avens, big-leaf avens. Native perennial. 

Geum macrophyllum von Willdenow var. perincisum (Rydberg) Raup 

Avens, large-leaved avens, big-leaf avens. Native perennial. 

Geum triflorum Pursh 

Prairie smoke, purple avens, old man's whiskers. Native perennial. 

Heteromeles arbutifolia (Lindley) Roemer var. arbutifolia 

Toyon, Christmas berry, Christmas-holly. Native shrub-tree. 

Holodiscus discolor (Pursh) Maximowicz 

Ocean spray, cream bush. Native shrub. 

Horkelia bolanderi Gray ssp. bolanderi 

Bolander's horkelia, border honey-dew. Endemic perennial. CNPS List 1B.2 

Horkelia californica von Chamisso & Schlechtendal var. californica 

California horkelia, California honey-dew. Native perennial. 

Horkelia californica von Chamisso & Schlechtendal var. elata (Greene) Ertter & Reveal 

Tall horkelia. Native perennial. 

Horkelia congesta Douglas ex Hooker var. nemorosa (D. Keck) M. Peck 

Josephine horkelia. Native perennial. CNPS List 2.1 

Horkelia daucifolia (Greene) Rydberg ssp. daucifolia 

Carrot-leaved horkelia, yellow honey-dew. Endemic perennial. 

Horkelia daucifolia (Greene) Rydberg ssp. indicta (Jepson) Ertter & Reveal 

Jepson’s horkelia. Endemic perennial. 

Horkelia daucifolia (Greene) Rydberg ssp. latior Keck 

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Scott Mtn. horkelia. Endemic perennial. 

Horkelia fusca Lindley var. pseudocapitata (T. J. Howell) M. Peck 

Big-headed horkelia. Native perennial. 

Horkelia fusca Lindley var. parviflora (Nuttall ex Torrey & Gray) Wawra 

Dusky horkelia. Native perennial. 

Horkelia hendersonii T. J. Howell 

Henderson's horkelia. Endemic perennial. CNPS List 1B.1 

Horkelia marinensis (Elmer) Crum 

Pt. Reyes horkelia. Native perennial. CNPS List 1B.2 

Horkelia sericata Watson 

Howell's horkelia, silky honey-dew. Native perennial. CNPS List 4.3 

Horkelia tenuiloba (Torrey) Gray 

Thin-lobed horkelia. Native perennial. CNPS List 1B.2 

Horkelia tridentata Torrey var. flavescens (Rydberg) Ertter & Reveal 

Three-toothed horkelia. Native perennial. 

Horkelia tridentata Torrey var. tridentata 

Three-toothed horkelia. Native perennial. 

Ivesia gordonii (Hooker) Torrey & Gray var. alpicola (Rydberg ex T. J. Howell) Ertter & Reveal 

Gordon's ivesia, alpine ivesia. Native perennial. 

Ivesia gordonii (Hooker) Torrey & Gray var. ursinorum (Jepson) Ertter & Reveal 

Gordon’s ivesia. Native perennial. 

Ivesia longibracteata Ertter 

Castle Crags ivesia. Native perennial. CNPS List 1B.3 

Ivesia pickeringii Torrey ex Gray 

Pickering's ivesia, silk ivesia. Endemic perennial. CNPS List 1B.2 

Luetkea pectinata (Pursh) Kuntze 

Partridge foot. Native creeping-trailing shrub. 

Malus fusca (Rafinesque) C. K. Schneider 

Oregon crab apple. Native shrub-tree. 

Malus pumila P. Miller 

Cultivated apple, sweet apple. Non-native tree. Escaped fruit tree. 

Neviusia cliftonii J. Shevock, B. Ertter, & D. Taylor 

Shasta snow-wreath. Native shrub. CNPS List 1B.2 

Oemleria cerasiformis (Torrey & Gray ex Hooker & Arnott) Landon 

Oso berry, Indian-plum. Native shrub. 

Physocarpus capitatus (Pursh) Kuntze 

Ninebark, Pacific ninebark, western ninebark. Native shrub. 

Potentilla anglica Laicharding 

English cinquefoil. Non-native perennial. 

Potentilla anserina L. ssp. anserina 

Common silverweed. Native perennial. 

Potentilla anserina ssp. pacifica (T. J. Howell) Rousi 

Pacific silverweed. Native perennial. 

Potentilla breweri Watson 

Brewer’s cinquefoil. Native perennial. 

Potentilla bruceae Rydberg 

Bruce’s cinquefoil. Native perennial. 

Potentilla cristae Ferlatte & Strother 

Crested cinquefoil. Endemic perennial. CNPS List 1B.3 

Potentilla drummondii Lehmann 

Drummond's cinquefoil, mountain cinquefoil. Native perennial. 

Potentilla flabellifolia Hooker ex Torrey & Gray var. flabellifolia 

Mt. Rainier cinquefoil, alpine fan-foil. Native perennial. 

Potentilla gracilis Douglas ex Hooker var. fastigiatus (Nuttall) Watson 

Slender cinquefoil. Native perennial. 

Potentilla gracilis Douglas ex Hooker var. gracilis 

Slender cinquefoil, silver cinquefoil. Native perennial. 

Potentilla millefolia Rydberg var. klamathensis (Rydberg) Jepson 

Many-leaved cinquefoil, cut-leaved cinquefoil, feather cinquefoil. Native perennial. 

Potentilla millefolia Rydberg var. millefolia 

Many-leaved cinquefoil, cut-leaved cinquefoil, feather cinquefoil. Native perennial. 

Potentilla rivalis Nuttall 

Brook cinquefoil, river cinquefoil. Native annual-perennial. 

Prunus avium (Linnaeus) Linnaeus 

Sweet cherry. Non-native tree. Escaped ornamental. 

Prunus dulcis (P. Miller) D. A. Webb 

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Almond. Non-native tree. Escaped fruit tree. 

Prunus emarginata (Douglas ex Hooker) D. Dietrich var. emarginata 

Bitter cherry. Native shrub-tree. 

Prunus laurocerasus Linnaeus 

English-laurel. Non-native shrub. Escaped ornamental. 

Prunus persica (Linnaeus) Batsch 

Peach. Non-native tree. Escaped fruit tree. 

Prunus subcordata Bentham var. subcordata 

Klamath plum, Sierra plum. Native shrub. 

Prunus virginiana Linnaeus var. demissa (Nuttall) Torrey 

Western choke cherry. Native shrub. 

Prunus virginiana Linnaeus var. melanocarpa (A. Nelson) Sargent 

Western choke cherry. Native shrub. 

Pseudocydonia sinensis (Dumont de Courset) Schneider 

False quince, Chinese-quince. Non-native tree. Escaped ornamental. 

Purshia tridentata (Pursh) de Candolle var. tridentata 

Antelope bush, bitter brush. Native shrub. 

Pyracantha fortuneana (Maximowicz) Li 

Chinese fire thorn. Non-native shrub. Escaped ornamental. 

Pyrus communis Linnaeus 

Pear, common pear. Non-native tree. Escaped fruit tree. 

Rosa californica von Chamisso & Schlechtendal 

California rose, California wild rose. Native shrub. 

Rosa canina Linnaeus 

Dog rose. Non-native shrub. 

Rosa gymnocarpa Nuttall var. gymnocarpa 

Wood rose. Native shrub. 

Rosa gymnocarpa Nuttall var. serpentina Ertter & W. H. Lewis 

Endemic shrub (CFP: OR) 

Rosa nutkana Presl 

Nootka rose. Native shrub. 

Rosa pinetorum Heller 

Pine rose. Native shrub. 

Rosa pisocarpa Gray ssp. ahartii Ertter & W. H. Lewis 

Native shrub. 

Rosa pisocarpa Gray ssp. pisocarpa 

Mortar rose, cluster rose. Native shrub. 

Rosa rubiginosa Linnaeus 

Eglantine, sweet-brier. Non-native shrub. 

Rosa spithamea Watson var. sonomensis (Greene) Jepson 

Sonoma rose. Native shrub. 

Rosa spithamea Watson var. spithamea 

Ground rose. Native shrub. 

Rosa woodsii Lindley ssp. ultramontana (Watson) Roy L. Taylor & MacBryde 

Interior rose, montane rose. Native shrub. 

Rubus armeniacus Focke 

Himalaya berry, Himalayan blackberry. Non-native shrub. 

Rubus glaucifolius Kellogg var. glaucifolius 

San Diego raspberry. Native shrub. 

Rubus laciniatus von Willdenow 

Cut-leaf bramble, common bramble, evergreen bramble, cut-leaved blackberry. Non-native shrub. 

Rubus lasiococcus Gray 

Dwarf bramble. Native perennial. 

Rubus leucodermis Douglas ex Torrey & Gray var. leucodermis 

Western raspberry, white-stemmed raspberry. Native shrub. 

Rubus leucodermis Douglas ex Torrey & Gray var. trinitatis Berger 

Western raspberry, white-stemmed raspberry. Endemic shrub. 

Rubus nivalis Douglas ex Hooker 

Snow dwarf bramble. Native perennial. CNPS List 2.3 

Rubus parviflorus Nuttall var. parviflorus 

Western thimble berry. Native shrub. 

Rubus parviflorus Nuttall var. velutinus (Hooker & Arnott) Greene 

Western thimble berry. Native shrub. 

Rubus pensilvanicus Poiret 

Pennsylvania blackberry. Non-native shrub. 

Rubus recurvans Blanchard 

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Recurved blackberry. Non-native shrub. 

Rubus spectabilis Pursh var. spectabilis 

Salmon berry. Native shrub. 

Rubus ulmifolius Schott var. inermis (von Willdenow) W. O. Focke 

Elm-leaved blackberry. Non-native shrub. 

Rubus ursinus von Chamisso & Schlechtendal ssp. macropetalus (Douglas ex Hooker) Taylor & Macbryde 

California blackberry, Pacific blackberry. Native vine. 

Rubus ursinus von Chamisso & Schlechtendal ssp. ursinus 

California blackberry, Pacific blackberry. Native vine. 

Sanguisorba annua (Nuttall ex Hooker) Torrey & Gray 

Burnet. Native annual-perennial. 

Sanguisorba minor Scopoli ssp. muricata Briquet 

Garden burnet. Non-native perennial. 

Sanguisorba occidentalis Nuttall 

Western great burnet. Native annual-perennial. 

Sanguisorba officinalis Linnaeus 

Small-headed great burnet. Native annual-perennial. CNPS List 2.2 

Sibbaldia procumbens Linnaeus 

Creeping sibbaldia. Native perennial. 

Sorbus californica Greene 

Mountain-ash. Native shrub. 

Sorbus scopulina Greene 

Western mountain-ash. Native shrub. 

Sorbus sitchensis M. Roemer var. grayi (Wenzig) C. L. Hitchcock 

Sitka or western mountain-ash, rowan. Native shrub. 

Spiraea douglasii Hooker var. douglasii 

Douglas' spirea. Native shrub. 

Spiraea splendens Baumann ex K. Koch var. splendens 

Rose-colored meadow-sweet, mountain spirea. Native shrub. 

RUBIACEAE • Madder Family 

Cephalanthus occidentalis Linnaeus var. californica Bentham 

Buttonbush, button-willow. Native shrub. 

Crucianella angustifolia Linnaeus 

Crosswort. Non-native annual. 

Galium ambiguum Wight ssp. ambiguum 

Yolla Bolly bedstraw. Native perennial. 

Galium ambiguum Wight ssp. siskiyouense (Ferris) Dempster & Stebbins 

Siskiyou bedstraw. Endemic perennial. 

Galium andrewsii Gray ssp. andrewsii 

Phlox-leaved bedstraw. Native perennial. 

Galium aparine Linnaeus 

Bedstraw, goose-grass, cleavers. Native annual. 

Galium bifolium Watson 

Low mountain bedstraw. Native annual. 

Galium bolanderi Gray 

Bolander's bedstraw. Native perennial. 

Galium boreale Linnaeus ssp. septentrionale (Roemer & Schultes) Iltis 

Northern bedstraw. Native perennial. 

Galium californicum Hooker & Arnott ssp. californicum 

California bedstraw. Native perennial. 

Galium divaricatum Pourret ex Lamarck 

Lamarck's bedstraw. Non-native annual. 

Galium glabrescens (Ehrendorfer) Dempster & Ehrendorfer ssp. glabrescens 

Castle Lake bedstraw. Endemic perennial. 

Galium grayanum Ehrendorfer var. grayanum 

Gray's bedstraw. Native perennial. 

Galium grayanum Ehrendorfer var. nanum Dempster & Ehrendorfer 

Gray's bedstraw. Native perennial. 

Galium mexicanum Kunth var. asperulum (Gray) Dempster 

Mexican bedstraw. Native vine. 

Galium mollugo Linnaeus 

Wild madder, smooth bedstraw. Non-native perennial. 

Galium muricatum Wight 

Humboldt bedstraw. Native perennial. 

Galium oreganum Britton 

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Oregon bedstraw. Native perennial. CNPS List 3 

Galium parisiense Linnaeus 

Wall bedstraw. Non-native annual. 

Galium porrigens Dempster var. porrigens 

Climbing bedstraw, graceful bedstraw. Native shrub-vine. 

Galium porrigens Dempster var. tenue (Dempster) Dempster 

Climbing bedstraw, graceful bedstraw. Native perennial vine. 

Galium serpenticum Dempster ssp. scotticum Dempster & Ehrendorfer 

Warner Mtns. bedstraw. Endemic perennial. CNPS List 1B.2 

Galium sparsiflorum W. Wight ssp. glabrius Dempster & Stebbins 

Sequoia bedstraw. Native perennial-shrub. 

Galium tricornutum Dandy 

Rough-fruited corn bedstraw. Native trailing annual. 

Galium trifidum Linnaeus var. columbianum (Rydberg) Hultén 

Trifid bedstraw. Native annual-perennial. 

Galium trifidum Linnaeus var. subbiflorum (Wiegand) Piper 

Trifid bedstraw. Native vine. 

Galium triflorum Michaux 

Fragrant bedstraw, sweet-scented bedstraw. Native perennial. 

Kelloggia galioides Torrey 

Milky kelloggia. Native perennial. 

Sherardia arvensis Linnaeus 

Field madder, blue field madder. Non-native annual. 

RUPPIACEAE • Ditch-Grass Family 

Ruppia cirrhosa (Petagna) Grande 

Spiral ditch-grass. Native perennial. 

Ruppia maritima Linnaeus 

Ditch-grass, widgeon-grass. Native perennial. 

RUTACEAE • Rue Family 

Ptelea crenulata Greene 

California hop tree, wafer-ash. Native shrub. 

SALICACEAE • Willow Family 

Populus alba Linnaeus 

White poplar, silver poplar. Non-native tree. 

Populus fremontii Watson ssp. fremontii 

Alamo, Fremont’s cottonwood. Native tree. 

Populus x parryi Sargent [P. fremontii x P. trichocarpa] 

Parry’s cottonwood. Native tree. 

Populus tremuloides Michaux 

Quaking aspen. Native tree. 

Populus trichocarpa Torrey & Gray ex Hooker 

Black cottonwood. Native tree. 

Salix alba Linnaeus 

White willow. Non-native tree. 

Salix babylonica Linnaeus 

Weeping willow. Non-native tree. Escaped ornamental. 

Salix boothii Dorn 

Booth’s willow. Native shrub. 

Salix breweri Bebb 

Brewer’s willow. Native shrub. 

Salix delnortensis C. K. Schneider 

Del Norte willow. Endemic shrub. CNPS List 4.3 

Salix eastwoodiae Cockerell ex Heller 

Sierra willow. Native shrub. 

Salix exigua Nuttall var. hindsiana (Bentham) Dorn 

Narrow-leaved willow, sandbar willow, valley willow. Native shrub. 

Salix gooddingii Ball 

Goodding’s black willow. Native tree. 

Salix hookeriana Barratt ex Hooker 

Coastal willow, coast willow, dune willow, Hooker willow. Native shrub. 

Salix jepsonii C. K. Schneider 

Jepson’s willow. Native shrub. 

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Salix laevigata Bebb 

Red willow. Native tree. 

Salix lasiolepis Bentham var. lasiolepis 

Arroyo willow. Native shrub. 

Salix lasiolepis Bentham var. bigelovii (Torrey) Bebb in Watson 

Arroyo willow. Native shrub. 

Salix lemmonii Bebb in Watson 

Lemmon’s willow. Native shrub. 

Salix lucida Muhlenberg ssp. lasiandra (Bentham) E. Murray 

Pacific willow, yellow willow, shining willow. Native tree. 

Salix melanopsis Nuttall 

Dusky willow, longleaf willow. Native shrub. 

Salix prolixa Andersson 

Mackenzie’s willow. Native shrub. 

Salix x rubens Schrank [S. alba x S. fragilis] 

Crack willow. Non-native tree. 

Salix scouleriana Barratt ex Hooker 

Scouler’s willow, Nuttall’s willow. Native tree. 

Salix sitchensis Sanson ex Bongard 

Sitka willow, velvet willow. Native shrub. 

Salix tracyi Ball 

Tracy’s willow. Endemic shrub-tree. 

SARRACENIACEAE • Pitcher Plant Family 

Darlingtonia californica Torrey 

California pitcher plant, California cobra-lily, darlingtonia, cobra plant. Native perennial. CNPS List 4.2 

SAXIFRAGACEAE • Saxifrage Family 

Bensoniella oregona (Abrams & Bacigalupi) C. V. Morton 

Oregon bensoniella. Endemic perennial. CNPS List 1B.1 • State: rare. 

Boykinia major Gray in Brewer et al. 

Mountain boykinia. Native perennial. 

Boykinia occidentalis Torrey & Gray 

Coast boykinia, brook foam. Native perennial. 

Cascadia nuttallii (J. K. Small) A. M. Johnson 

Nuttall's saxifrage. Native perennial. CNPS List 2.1 

Chrysosplenium glechomifolium Nuttall in Torrey & Gray 

Pacific carpet weed, golden-saxifrage. Native perennial. 

Darmera peltata (Torrey in Bentham) Voss 

Indian-rhubarb, umbrella plant, shield leaf. Native perennial. 

Heuchera chlorantha Piper 

Green-flowered alum root. Native perennial. 

Heuchera cylindrica Douglas in W. J. Hooker 

Poker alum root. Native perennial. 

Heuchera merriamii Eastwood 

Merriam's alum root. Native perennial. 

Heuchera micrantha Douglas ex Lindley var. diversifolia (Rydberg) Rosendahl, Butters, & Lakela 

Small-flowered or crevice alum root. Native perennial. 

Heuchera micrantha Douglas ex Lindley var. erubescens (A. Braun & Bouché) Rosendahl 

Crevice alum root. Native perennial. 

Heuchera micrantha Douglas ex Lindley var. hartwegii (Watson ex Wheelock) Rosendahl 

Crevice alum root. Native perennial. 

Heuchera micrantha Douglas ex Lindley var. macropetala B. G. Shipes & E. Wells 

Crevice alum root. Endemic perennial. 

Heuchera micrantha Douglas ex Lindley var. micrantha 

Small-flowered or crevice alum root. Native perennial. 

Heuchera pilosissima Fischer & Meyer var. pilosissima 

Seaside alum root, coast alum root. Native perennial. 

Heuchera rubescens Torrey 

Pink alum root, jack-of-the-rocks. Native perennial. 

Lithophragma affine Gray ssp. affine 

Woodland star. Native perennial. 

Lithophragma bolanderi Gray 

Bolander's fringe-cup. Native perennial. 

Lithophragma campanulatum T. J. Howell 

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Woodland star. Native perennial. 

Lithophragma glabrum Nuttall in Torrey & Gray 

Smooth fringe-cup. Native perennial. 

Lithophragma heterophyllum (Hooker & Arnott) Torrey & Gray 

Hill star. Native perennial. 

Lithophragma parviflorum (Hooker) Nuttall in Torrey & Gray var. parviflorum 

Prairie woodland star, star flower. Native perennial. 

Lithophragma parviflorum (Hooker) Nuttall ex Torrey & Gray var. trifoliatum (Eastwood) Jepson 

Prairie woodland star. Native perennial. 

Lithophragma tenellum Nuttall 

Slender woodland star. Native perennial. 

Micranthes aprica (Greene) J. K. Small in N. L. Britton et al. 

Sierra saxifrage. Native perennial. 

Micranthes bryophora (Gray) J. K. Small in N. L. Britton et al. var. bryophora 

Bud saxifrage. Native perennial. 

Micranthes californica (Greene) J. K. Small in N. L. Britton et al. 

California saxifrage. Native perennial. 

Micranthes ferruginea (Graham) Brouillet & Gornall var. ferruginea 

Alaska saxifrage, rusty saxifrage. Native perennial. 

Micranthes fragosa Suksdorf 

Fleshy-leaved saxifrage, brittle-leaved saxifrage. Native perennial. 

Micranthes howellii (Greene) J. K. Small in N. L. Britton et al. 

Howell's saxifrage. Native perennial. CNPS List 4.3 

Micranthes integrifolia (Hooker) J. K. Small in N. L. Britton et al. 

Hooker's saxifrage, northwest saxifrage. Native perennial. 

Micranthes marshallii (Greene) J. K. Small in N. L. Britton et al. 

Marshall's saxifrage, Hoopa saxifrage. Native perennial. 

Micranthes nidifica (Greene) J. K. Small in N. L. Britton et al. 

Peak saxifrage, nesting saxifrage. Native perennial. 

Micranthes odontoloma (Piper) Heller 

Stream bank saxifrage. Native perennial. 

Micranthes oregana (T. J. Howell) J. K. Small in N. L. Britton et al. 

Bog saxifrage, Oregon saxifrage, marsh saxifrage. Native perennial. 

Micranthes rufidula (Small) Macoun 

Rusty saxifrage. Native perennial. CNPS List 2.3 

Micranthes tolmiei (Torrey & Gray) Brouillet & Gornall 

Alpine saxifrage. Native perennial. 

Mitella breweri Gray 

Brewer's mitrewort, feathery mitrewort. Native perennial. 

Mitella caulescens Nuttall 

Leafy-stemmed mitrewort. Native perennial. CNPS List 4.2 

Mitella diversifolia Greene 

Angle-stemmed mitrewort. Native perennial. 

Mitella ovalis Greene 

Coastal mitrewort. Native perennial. 

Mitella pentandra Hooker 

Alpine mitrewort, Bishop's cap, five-point mitrewort. Native perennial. 

Mitella trifida Graham var. trifida 

Three-toothed mitrewort. Native perennial. 

Saxifraga caespitosa Linnaeus var. caespitosa 

Tufted saxifrage. Native perennial. CNPS List 2.3 

Saxifraga mertensiana Bongard 

Wood saxifrage, Merten’s saxifrage. Native perennial. 

Saxifraga stolonifera Meerburgh 

Creeping saxifrage. Non-native perennial. 

Saxifragopsis fragarioides (Greene) J. K. Small 

Joint-leaved saxifrage, strawberry saxifrage. Native perennial. 

Suksdorfia ranunculifolia (Hooker) Engler in Engler & Prantl 

Buttercup-leaved mock brookfoam. Native perennial. 

Tellima grandiflora (Pursh) Douglas ex Lindley 

Fringe cups. Native perennial. 

Tiarella trifoliata Linnaeus var. trifoliata 

Lace flower, three-leaved coolwort, foam flower. Native perennial. CNPS List 3 

Tiarella trifoliata Linnaeus var. unifoliata (Hooker) Kurtz 

Lace flower, western coolwort, sugar-scoop. Native perennial. 

Tolmiea menziesii (Pursh) Torrey & Gray 

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Youth-on-age, mother-of-thousands, piggyback plant. Native perennial. 

SCROPHULARIACEAE • Figwort, Snapdragon, or Scroph Family 

Bellardia trixago (Linnaeus) Allioni 

Bellardia. Non-native perennial. 

Boschniakia hookeri Walpers 

Vancouver ground cone, small ground cone. Native perennial. CNPS List 2.3 

Boschniakia strobilacea Gray 

California ground cone. Native perennial. 

Buddleja davidii Franchet 

Butterfly bush, summer-lilac. Non-native shrub-tree. Escaped ornamental. 

Castilleja affinis Hooker & Arnott ssp. affinis 

Lay and Collie's Indian paintbrush. Native perennial. 

Castilleja affinis Hooker & Arnott ssp. litoralis (Pennell) Chuang & Heckard 

Coast Indian paintbrush. Native perennial. CNPS List 2.2 

Castilleja ambigua Hooker & Arnott var. ambigua 

Paintbursh owl's-clover. Native annual. 

Castilleja ambigua Hooker & Arnott ssp. humboldtiensis (Keck) Chuang & Heckard 

Humboldt Bay owl's clover. Native annual. CNPS List 1B.2 

Castilleja applegatei Fernald var. martinii (Abrams) Chuang & Heckard 

Wavy-leaved Indian paintbrush. Native perennial. 

Castilleja applegatei Fernald var. pinetorum (Fernald) N. Holmgren 

Wavy-leaved Indian paintbrush. Native perennial. 

Castilleja arachnoidea Greenman 

Cobwebby Indian paintbrush. Native perennial. 

Castilleja attenuta (Gray) Chuang & Heckard 

Narrow-leaved owl's-clover, valley tassels. Native annual. 

Castilleja densiflora (Bentham) Chuang & Heckard ssp. densiflora 

Dense-flowered Indian paintbrush. Native annual. 

Castilleja exserta (Heller) Chuang & Heckard ssp. exserta 

Common owl's-clover. Native annual. 

Castilleja exserta (Heller) Chuang & Heckard ssp. latifolia (Watson) Chuang & Heckard 

Purple owl's-clover. Native annual. 

Castilleja foliolosa Hooker & Arnott 

Woolly Indian paintbrush. Native perennial. 

Castilleja hispida Bentham ssp. brevilobata (Piper) Chuang & Heckard 

Short-lobed Indian paintbrush. Endemic perennial. CNPS List 4.2 

Castilleja lacera (Bentham) Chuang & Heckard 

Cut-leaved Indian paintbrush. Native annual. 

Castilleja mendocinensis (Eastwood) Pennell 

Mendocino coast Indian paintbrush. Native perennial. CNPS List 1B.2 

Castilleja miniata Douglas ex Hooker ssp. elata (Piper) Munz 

Great or giant red Indian paintbrush, Siskiyou paintbrush. Endemic perennial. CNPS List 2.2 

Castilleja miniata Douglas ex Hooker ssp. miniata 

Great or giant red Indian paintbrush. Native perennial. 

Castilleja minor (Gray) Gray ssp. spiralis (Jepson) Chuang & Heckard 

Large-flowered Indian paintbrush. Native annual. 

Castilleja pruinosa Fernald 

Frosted Indian paintbrush. Native perennial. 

Castilleja rubicundula (Jepson) Chuang & Heckard ssp. lithospermoides (Bentham) Chuang & Heckard 

Cream sacs. Native annual. 

Castilleja rubicundula (Jepson) Chuang & Heckard ssp. rubicundula 

Cream sacs. Native annual. 

Castilleja schizotricha Greenman 

Split-hair Indian paintbrush. Endemic perennial. CNPS List 4.3 

Castilleja subinclusa Greene ssp. franciscana (Pennell) Chuang & Heckard 

Long-leaved Indian paintbrush. Native perennial. 

Castilleja tenuis (Heller) Chuang & Heckard 

Hairy owl's-clover. Native annual. 

Castilleja wightii Elmer ssp. wightii 

Wight's Indian paintbrush. Native perennial. 

Chloropyron maritimum (Nuttall ex Bentham in de Candolle) Heller ssp. palustre (Behr) Tank & J. M. Egger 

Pt. Reyes bird's-beak. Native annual. CNPS List 1B.2 

Collinsia bartsiifolia Bentham var. bartsiifolia 

White Chinese houses. Native annual. 

Collinsia corymbosa Herder 

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Round-headed Chinese houses. Native annual. CNPS List 1B.2 

Collinsia grandiflora Douglas ex Lindley 

Large-flowered blue-eyed Mary. Native annual. 

Collinsia greenei Gray 

Greene's blue-eyed Mary, mountain blue-eyed Mary. Native annual. 

Collinsia heterophylla Buist ex Graham var. heterophylla 

Purple-and-white Chinese houses, innocence. Native annual. 

Collinsia linearis Gray 

Chinese houses. Native annual. 

Collinsia parviflora Douglas ex Lindley 

Small-flowered blue-eyed Mary. Native annual. 

Collinsia rattanii Gray ssp. rattanii 

Rattan's blue-eyed Mary. Native annual. 

Collinsia sparsiflora Fischer & Meyer var. arvensis (Greene) Jepson 

Spinster’s blue-eyed Mary. Native annual. 

Collinsia sparsiflora Fischer & Meyer var. brucae (M. E. Jones) Newsom 


Collinsia sparsiflora Fischer & Meyer var. collina (Jepson) Newsom 


Collinsia sparsiflora Fischer & Meyer var. sparsiflora 


Collinsia tinctoria von Hartwiss ex Bentham 

Tincture plant. Native annual. 

Collinsia torreyi Gray var. latifolia Newsom 

Torrey's blue-eyed Mary. Native annual. 

Collinsia torreyi Gray var. torreyi 

Torrey's blue-eyed Mary. Native annual. 

Collinsia torreyi Gray var. wrightii (Watson) I. M. Johnston 

Wright's blue-eyed Mary. Native annual. 

Cordylanthus pilosus Gray ssp. hansenii (Ferris) Chuang & Heckard 

Hairy bird's-beak. Native annual. 

Cordylanthus pilosus Gray ssp. pilosus 

Hairy bird's-beak. Native annual. 

Cordylanthus pringlei Gray 

Pringle's bird's-beak. Native annual. 

Cordylanthus ramosus Nuttall ex Bentham in de Candolle 

Bird's-beak. Native annual. 

Cordylanthus tenuis Gray ssp. brunneus (Jepson) Munz 

Serpentine bird's-beak. Native annual. 

Cordylanthus tenuis Gray ssp. pallescens (Pennell) Chuang & Heckard 

Pallid bird's-beak. Endemic annual. CNPS List 1B.2 

Cordylanthus tenuis Gray ssp. tenuis 

Slender bird's-beak. Native annual. 

Cordylanthus tenuis Gray ssp. viscidus (T. J. Howell) Chuang & Heckard 

Sticky bird's-beak. Native annual. 

Cymbalaria muralis Gaertner, Meyer, & Schreber 

Kenilworth-ivy. Non-native perennial. Escaped ornamental. 

Digitalis purpurea Linnaeus 

Foxglove, purple foxglove. Non-native perennial. Escaped ornamental. 

Gratiola ebracteata Bentham 

Bractless hedge-hyssop. Native annual. 

Gratiola heterosepala Mason & Bacigalupi 

Boggs Lake hedge-hyssop. Native annual. CNPS List 1B.2 • State: endangered. 

Gratiola neglecta Torrey 

Clammy hedge-hyssop. Native annual. 

Keckiella breviflora (Lindley) Straw var. glabrisepala (Keck) N. Holmgren 

Bush-penstemon, gaping-penstemon. Native shrub. 

Keckiella corymbosa (Bentham) Straw 

Beard tongue, bush-penstemon, red keckiella. Native shrub. 

Keckiella lemmonii (Gray) Straw 

Bush-penstemon, bush beard tongue. Native shrub. 

Kickxia elatine (Linnaeus) Dumortier 

Sharp-leaved fluellin. Non-native annual. 

Kickxia spuria (Linnaeus) Dumortier 

Round-leaved cancerwort. Non-native annual. 

Limosella aquatica Linnaeus 

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Mudwort. Native annual. 

Linaria dalmatica (Linnaeus) P. Miller 

Dalmatian toadflax. Non-native perennial. 

Linaria vulgaris P. Miller 

Butter-and-eggs. Non-native perennial. 

Lindernia dubia (Linnaeus) Pennell var. anagallidea (Michaux) Cooper 

Long-stalked lindernia, false pimpernel. Native annual. 

Lindernia dubia (Linnaeus) Pennell var. dubia 

Short-stalked lindernia, false pimpernel. Native annual. 

Mimulus alsinoides Douglas ex Bentham 

Chickweed monkey flower. Native annual. 

Mimulus androsaceus Curran ex Greene 

Androsace monkey flower. Native annual. 

Mimulus angustatus (Gray) Gray 

Narrow-leaved pansy monkey flower. Native annual. 

Mimulus aurantiacus W. Curtis 

Orange bush monkey flower, northern bush monkey flower. Native shrub. 

Mimulus bicolor Hartwiss ex Bentham 

Yellow-and-white monkey flower. Native annual. 

Mimulus bolanderi Gray 

Bolander's monkey flower. Native annual. 

Mimulus breweri (Greene) Coville 

Brewer's monkey flower. Native annual. 

Mimulus cardinalis Douglas ex Bentham 

Scarlet monkey flower. Native perennial. 

Mimulus congdonii Robinson 

Congdon's monkey flower. Native annual. 

Mimulus dentatus Nuttall ex Bentham 

Tooth-leaved monkey flower. Native perennial. 

Mimulus douglasii (Bentham) Gray 

Purple mouse-ears. Native annual. 

Mimulus floribundus Douglas 

Floriferous mouse-ears. Native annual. 

Mimulus glaucescens Greene 

Shield-bracted monkey flower. Native annual. CNPS List 4.3 

Mimulus guttatus Fischer ex de Candolle 

Seep monkey flower. Native annual-perennial. 

Mimulus jepsonii A. L. Grant 

Jepson’s monkey flower. Native annual. 

Mimulus kelloggii (Curran & Greene) Curran ex Gray 

Kellogg's monkey flower. Native annual. 

Mimulus latidens (Gray) Greene 

Broad-toothed monkey flower. Native annual. 

Mimulus layneae (Greene) Jepson 

Layne's monkey flower, serpentine monkey flower. Native annual. 

Mimulus lewisii Pursh 

Great purple monkey flower. Native perennial. 

Mimulus moschatus Douglas 

Musk flower. Native perennial. 

Mimulus nanus Hooker & Arnott ssp. nanus 

Dwarf purple monkey flower. Native annual. 

Mimulus nudatus Curran ex Greene 

Bare monkey flower. Native annual. CNPS List 4.3 

Mimulus pilosus (Bentham) Watson 

Downy monkey flower. Native annual. 

Mimulus primuloides Bentham var. linearifolius Grant 

Linear-leaved monkey flower. Endemic perennial. 

Mimulus primuloides Bentham var. primuloides 

Primrose monkey flower. Native perennial. 

Mimulus pulsiferae Gray 

Candelabrum monkey flower. Native annual. 

Mimulus rattanii Gray 

Rattan's monkey flower. Native annual. 

Mimulus suksdorfii Gray 

Suksdorf's monkey flower. Native annual. 

Mimulus tilingii Regel var. tilingii 

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Larger mountain monkey flower. Native perennial. 

Mimulus tricolor Hartweg ex Lindley 

Tricolored monkey flower. Native annual. 

Nothochelone nemorosa (Douglas ex Lindley) Straw 

Woodland beardtongue. Native shrub. 

Nuttallanthus canadensis (Linnaeus) D. A. Sutton 

Old-field toadflax, blue toadflax. Native annual-perennial. 

Nuttallanthus texanus (Scheele) D. A. Sutton 

Texas toadflax. Native annual-perennial. 

Orobanche bulbosa G. Beck 

Chaparral broomrape. Native perennial. 

Orobanche californica von Chamisso & Schlechtendal ssp. californica 

California broomrape. Native perennial. 

Orobanche californica von Chamisso & Schlechtendal ssp. grayana (G. Beck) Heckard 

California broomrape. Native perennial. 

Orobanche californica von Chamisso & Schlechtendal ssp. jepsonii (Munz) Heckard 

Jepson's broomrape. Native perennial. 

Orobanche fasciculata Nuttall 

Clustered broomrape. Native perennial. 

Orobanche pinorum Geyer ex Hooker 

Pine broomrape. Native perennial. 

Orobanche uniflora Linnaeus 

Naked broomrape. Native perennial. 

Orobanche valida Jepson ssp. howellii Heckard & Collins 

Howell's broomrape. Native perennial. CNPS List 4.3 

Orobanche vallicola (Jepson) Heckard 

Hillside broomrape. Native perennial. 

Orthocarpus bracteosus Bentham 

Rosy owl’s-clover. Native annual. 

Orthocarpus cuspidatus Greene ssp. copelandii (Eastwood) Chuang & Heckard 

Copeland's owl's-clover. Native annual. 

Orthocarpus cuspidatus Greene ssp. cuspidatus 

Siskiyou Mountains owl's-clover. Native annual. CNPS List 4.3 

Orthocarpus imbricatus Torrey ex Watson 

Mountain owl's-clover. Native annual. 

Orthocarpus pachystachyus Gray 

Shasta owl's-clover. Native annual. CNPS List 1B.1 

Parentucellia latifolia (Linnaeus) Caruel 

Broad-leaved gland weed. Non-native annual. 

Parentucellia viscosa (Linnaeus) Caruel 

Yellow gland weed. Non-native annual. 

Pedicularis attollens Gray ssp. attollens 

Little elephant's head. Native perennial. 

Pedicularis attollens Gray ssp. protogyna Pennell 

Little elephant's head. Native perennial. 

Pedicularis bracteosa Bentham ex Hooker var. flavida (Pennell) Cronquist 

Cascade Mountains lousewort. Native perennial. CNPS List 4.3 

Pedicularis contorta Bentham ex Hooker var. contorta 

Curved-beak lousewort. Native perennial. CNPS List 4.3 

Pedicularis densiflora Bentham ex Hooker ssp. densiflora 

Indian warrior. Native perennial. 

Pedicularis groenlandica Retzius 

Elephant's head. Native perennial. 

Pedicularis howellii Gray 

Howell's lousewort. Endemic perennial. CNPS List 4.3 

Pedicularis racemosa Douglas ex Hooker 

Leafy lousewort, sickletop lousewort. Native perennial. 

Pedicularis semibarbata Gray var. semibarbata 

Pine woods lousewort, dwarf lousewort. Native perennial. 

Penstemon anguineus Eastwood 

Siskiyou penstemon. Endemic perennial. 

Penstemon azureus Bentham ssp. angustissimus (Gray) Keck 

Azure penstemon, skyblue penstemon. Native perennial. 

Penstemon azureus Bentham ssp. azureus 

Azure penstemon. Native perennial. 

Penstemon centranthifolius Bentham 

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Scarlet bugler. Native perennial. 

Penstemon cinicola Keck 

Ash beardtongue. Native perennial. CNPS List 4.3 

Penstemon davidsonii Greene var. davidsonii 

Davidson's penstemon, timberline beardtongue. Native perennial. 

Penstemon deustus Douglas ex Lindley var. suffrutescens L. Henderson 

Hot rock penstemon, scabland penstemon. Native perennial. 

Penstemon filiformis (Keck) Keck 

Thread-leaved penstemon. Endemic perennial. CNPS List 1B.3 

Penstemon gracilentus Gray 

Slender penstemon. Native perennial. 

Penstemon heterodoxus Gray var. heterodoxus 

Sierra beardtongue. Native perennial. 

Penstemon heterodoxus Gray var. shastensis (Keck) N. Holmgren 

Sierra beardtongue. Native perennial. CNPS List 4.3 

Penstemon heterophyllus Lindley ssp. heterophyllus 

Foothill penstemon, chaparral penstemon. Native perennial. 

Penstemon heterophyllus Lindley ssp. purdyi Keck 

Purdy's penstemon. Native perennial. 

Penstemon humilis Gray ssp. humilis 

Low beardtongue. Native perennial. 

Penstemon laetus Gray ssp. leptosepalus (Greene ex Gray) Keck 

Western gray beardtongue. Native perennial. 

Penstemon laetus Gray ssp. sagittatus Keck 

Mountain blue penstemon. Native perennial. 

Penstemon newberryi Gray var. berryi (Eastwood) N. Holmgren 

Berry's penstemon, pride-of-the-mountains. Endemic perennial. 

Penstemon newberryi Gray var. newberryi 

Mountain pride. Native perennial. 

Penstemon newberryi Gray var. sonomensis (Greene) Jepson 

Sonoma beardtongue, Sonoma penstemon. Native perennial. CNPS List 1B.3 

Penstemon parvulus (Gray) Krautter 

Small azure penstemon. Native perennial. 

Penstemon procerus Douglas ex Graham var. brachyanthus (Pennell) Cronquist 

Small-flowered penstemon, pincushion penstemon. Native perennial. 

Penstemon procerus Douglas ex Graham var. formosus (A. Nelson) Keck 

Small-flowered penstemon, pincushion penstemon. Native perennial. 

Penstemon purpusii Brandegee 

Snow Mtn. penstemon, beard tongue, Purpus' penstemon. Endemic perennial. 

Penstemon rattanii Gray ssp. rattanii 

Rattan's penstemon. Native perennial. 

Penstemon roezlii Regel 

Juniper-scrub beardtongue. Native perennial. 

Penstemon rupicola (Piper) T. J. Howell 

Rock penstemon. Native perennial. 

Penstemon rydbergii A. Nelson var. oreocharis (Greene) N. Holmgren 

Rydberg’s penstemon. Native perennial. 

Penstemon speciosus Douglas ex Lindley 

Showy penstemon. Native perennial. 

Penstemon tracyi Keck 

Tracy's penstemon. Endemic perennial. CNPS List 1B.3 

Sairocarpus breweri (Gray) D. A. Sutton 

Brewer’s toad’s mouth. Native annual. 

Sairocarpus cornutus (Bentham) D. A. Sutton 

Spurred toad’s mouth. Native annual. 

Sairocarpus subcordatus (Gray) D. A. Sutton 

Dimorphic toad’s mouth. Endemic annual. CNPS List 4.3 

Sairocarpus vexillocalyculatus (Kellogg) D. A. Sutton 

Wiry toad’s mouth. Native annual. 

Sairocarpus virga (Gray) D. A. Sutton 

Tall toad’s mouth. Native perennial. CNPS List 4.3 

Scrophularia californica von Chamisso & Schlechtendal ssp. californica 

Bee plant, California figwort. Native perennial. 

Scrophularia californica von Chamisso & Schlechtendal ssp. floribunda (Greene) R. J. Shaw 

Many-flowered figwort. Native perennial. 

Scrophularia lanceolata Pursh 

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Hare figwort. Native perennial. 

Tonella tenella (Bentham) Heller 

Small-flowered tonella. Native annual. 

Triphysaria eriantha (Bentham) Chuang & Heckard ssp. eriantha 

Butter-and-eggs, Johnny tuck. Native annual. 

Triphysaria eriantha (Bentham) Chuang & Heckard ssp. rosea (Gray) Chuang & Heckard 

Butter-and-eggs, Johnny tuck. Native annual. 

Triphysaria pusilla (Bentham) Chuang & Heckard 

Dwarf owl's-clover. Native annual. 

Triphysaria versicolor Fischer & Meyer ssp. faucibarbata (Gray) Chuang & Heckard 

Smooth owl's-clover. Native annual. 

Triphysaria versicolor Fischer & Meyer ssp. versicolor 

Owl's-clover. Native annual. 

Verbascum blattaria Linnaeus 

Moth mullein. Non-native perennial. 

Verbascum thapsus Linnaeus 

Common mullein, flannel mullein, woolly mullein. Non-native perennial. 

Verbascum virgatum Stokes 

Virgate mullein, wand mullein. Non-native perennial. 

Veronica americana (Rafinesque) Schweinfurth ex Bentham 

American brooklime. Native perennial. 

Veronica anagallis-aquatica Linnaeus 

Great water speedwell. Non-native perennial. 

Veronica arvensis Linnaeus 

Corn speedwell. Non-native annual. 

Veronica californica M. M. Martínez-Ortega & D. C. Albach 

Snow queen. Native perennial. 

Veronica catenata Pennell 

Chain speedwell. Non-native perennial. CNPS List 4.3 

Veronica copelandii Eastwood 

Copeland's speedwell. Endemic perennial. 

Veronica peregrina Linnaeus ssp. xalapensis (Humboldt, Bonpland, & Kunth) Pennell 

Purslane speedwell. Native annual. 

Veronica persica Poiret 

Persian speedwell. Non-native annual. 

Veronica scutellata Linnaeus 

Marsh speedwell, grass-leaved speedwell. Native perennial. 

Veronica serpyllifolia Linnaeus ssp. humifusa (Dickson) Syme 

Thyme-leaved speedwell. Native perennial. 

Veronica speciosa (R. Cunningham ex A. Cunningham) J. C. Andersen 

New Zealand hebe. Non-native shrub. Escaped ornamental. 

Veronica triphyllos Linnaeus 

Finger speedwell. Non-native annual. 

Veronica wormskjoldii Roemer & Schultes var. wormskjoldii 

American alpine speedwell. Native perennial. 

SIMAROUBACEAE • Quassia Family 

Ailanthus altissima (Miller) Swingle 

Tree-of-heaven, ailanthus, Chinese-sumac tree. Non-native tree. 

SMILACACEAE • Greenbriar Family 

Smilax californica (A. de Candolle) Gray 

Greenbriar, greenbrier. Native vine. 

Smilax jamesii G. A. Wallace 

English Peak greenbriar. Endemic vine. CNPS List 1B.3 

SOLANACEAE • Nightshade or Potato Family 

Cestrum elegans Schlechtendal 

Jassamine. Non-native shrub. Escaped ornamental. 

Cestrum fasciculatum (Schlechtendal) Miers 

Early-flowering jassamine. Non-native shrub. 

Datura stramonium Linnaeus 

Jimson weed, thorn-apple. Non-native annual. 

Datura wrightii Regel 

Sacred datura. Native annual-perennial. 

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Leucophysalis nana (Gray) Averett 

Dwarf false ground-cherry. Native perennial. 

Lycium barbarum Linnaeus 

Matrimony vine. Non-native shrub. 

Nicotiana acuminata (Graham) Hooker var. multiflora (Philippi) Reiche 

Wild tobacco. Non-native annual. 

Nicotiana attenuata Torrey ex Watson 

Coyote tobacco. Native annual. 

Nicotiana glauca Graham 

Tree tobacco, Mexican tobacco. Non-native shrub. 

Nicotiana quadrivalvis Pursh var. bigelovii (Torrey) DeWolf 

Indian tobacco. Native annual. 

Physalis longifolia Nuttall var. longifolia 

Long-leaf ground-cherry. Non-native perennial. 

Physalis pubescens Linnaeus 

Husk-tomato. Non-native annual. 

Salpichroa origanifolia (Lamarck) Baillon 

Lily-of-the-valley vine. Non-native vine. 

Solanum americanum P. Miller 

American nightshade. Native annual-perennial. 

Solanum aviculare Forster f. 

Kangaroo-apple. Non-native shrub. 

Solanum douglasii Dunal 

Green-spot nightshade. Non-native perennial. 

Solanum elaeagnifolium Cavanilles 

White horse-nettle, silver-leaved horse-nettle. Non-native perennial. 

Solanum furcatum Dunal 

South American black nightshade, forked nightshade. Non-native perennial. 

Solanum lycopersicum Linnaeus 

Tomato. Non-native annual-perennial. Doubtfully persisting. 

Solanum nigrum Linnaeus 

European black nightshade. Non-native annual-perennial. 

Solanum parishii Heller 

Parish's nightshade. Native perennial. 

Solanum physalifolium Rusby 

Hoe nightshade, ground-cherry nightshade. Non-native annual. 

Solanum rostratum Dunal 

Buffalo bur. Non-native annual. 

Solanum umbelliferum Eschscholtz var. umbellatum 

Blue witch, blue nightshade. Native perennial. 

Solanum xanti Gray var. intermedium Parish 

Purple nightshade. Native shrub. 

SPARGANIACEAE • Bur-Reed Family 

Sparganium angustifolium Michaux 

Narrow-leaved bur-reed. Native perennial. 

Sparganium emersum Rehmann ssp. emersum 

Narrow-leaved bur-reed. Native perennial. 

Sparganium eurycarpum Engelmann ssp. eurycarpum 

Common bur-reed. Native perennial. 

STAPHYLEACEAE • Bladdernut Family 

Staphylea bolanderi Gray 

Sierra bladdernut. Native shrub. 

STYRACACEAE • Styrax or Storax Family 

Styrax redivivus (Torrey) L. C. Wheeler 

Storax, snowdrop bush. Native shrub-tree. 

TAMARICACEAE • Salt-Cedar or Tamarisk Family 

Tamarix parviflora de Candolle 

Salt-cedar, small-flowered tamarisk. Non-native shrub. 

Tamarix ramosissima Linnaeus 

Salt-cedar, tamarisk. Non-native shrub. 

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TECOPHILAEACEAE • Doll’s-lily Family 

Odontostomum hartwegii Torrey 

Hartweg’s doll’s-lily. Native perennial. 

TROPAEOLACEAE • Nasturtium Family 

Tropaeolum majus Linnaeus 

Nasturtium, garden nasturtium. Non-native annual-perennial. Escaped ornamental. 

TYPHACEAE • Cat-Tail Family 

Typha angustifolia Linnaeus 

Narrow-leaved cat-tail. Native perennial. 

Typha domingensis Persoon 

Domingan cat-tail, southern cat-tail. Native perennial. 

Typha latifolia Linnaeus 

Broad-leaved cat-tail. Native perennial. 

UMBELLIFERAE (APIACEAE) • Carrot, Parsley, or Umbel Family 

Ammi majus Linnaeus 

Bishop's weed. Non-native annual-perennial. 

Anethum graveolens Linnaeus 

Dill. Non-native annual. Escaped food plant. 

Angelica arguta Nuttall ex Torrey & Gray var. arguta 

Lyall's angelica. Native perennial. 

Angelica californica Jepson 

California angelica. Native perennial. 

Angelica genuflexa Nuttall ex Torrey & Gray 

Kneeling angelica. Native perennial. 

Angelica hendersonii Coulter & Rose 

Henderson's angelica. Native perennial. 

Angelica lucida Linnaeus 

Sea watch, seacoast angelica. Native perennial. CNPS List 4.2 

Angelica tomentosa Watson 

Angelica, California angelica, wood angelica. Native perennial. 

Anthriscus caucalis Bieberstein 

Bur-chervil. Non-native annual. 

Apiastrum angustifolium Nuttall 

Wild-celery, mock parsley. Native annual. 

Apium graveolens Linnaeus var. dulce (P. Miller) Persoon 

Celery, common celery. Non-native annual-perennial. 

Berula erecta (Hudson) Coville 

Cut-leaved water-parsnip. Native perennial. 

Bupleurum lancifolium Hornemann 

Lance-leaved thorow-wax. Non-native annual. 

Ciclospermum leptophyllum (Persoon) Sprague 

Marsh-parsley. Non-native annual. 

Cicuta douglasii (de Candolle) Coulter & Rose 

Western water hemlock. Native perennial. 

Cicuta maculata Linnaeus var. maculata 

Water hemlock, spotted hemlock. Native perennial. 

Conioselinum pacificum (Watson) Coulter & Rose 

Hemlock-parsley. Native perennial. 

Conium maculatum Linnaeus 

Poison hemlock, spotted hemlock. Non-native perennial. 

Coriandrum sativum Linnaeus 

Coriander, cilantro. Non-native annual. 

Cymopterus terebinthinus (Hooker) M. E. Jones var. californicus (Coulter & Rose) Jepson 

Terpentine wave-wing. Native perennial. 

Daucus carota Linnaeus 

Wild carrot, carrot, Queen Anne's lace. Non-native perennial. 

Daucus pusillus Michaux 

Rattlesnake weed. Native annual. 

Eryngium aristulatum Jepson var. aristulatum 

Jepson's eryngo. Native perennial. 

Eryngium armatum (Watson) Coulter & Rose 

Prickly eryngo, coyote-thistle. Native perennial. 

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Eryngium articulatum Hooker 

Bee-thistle, bee eryngo. Native perennial. 

Eryngium constancei Sheikh 

Loch Lomond button-celery. Native perennial. CNPS List 1B.1 • Federal: endangered • State: endangered. 

Eryngium vaseyi Coulter & Rose 

Coyote thistle. Native perennial. Historic collections; presumed extinct. 

Foeniculum vulgare P. Miller 

Fennel, sweet fennel. Non-native perennial. 

Glehnia littoralis F. Schmidt ssp. leiocarpa (Mathias) Hultén 

American glehnia, beach silvertop. Native perennial. CNPS List 4.2 

Heracleum maximum Bartram 

Cow-parsnip, giant cow-parsnip. Native perennial. 

Ligusticum apiifolium (Nuttall) Gray 

Celery-leaved lovage. Native perennial. 

Ligusticum californicum Coulter & Rose 

California ligusticum. Native perennial. 

Ligusticum grayi Coulter & Rose 

Gray's ligusticum, sheep-lovage. Native perennial. 

Lilaeopsis occidentalis Coulter & Rose 

Western lilaeopsis. Native perennial. 

Lomatium californicum (Torrey & Gray) Mathias & Constance 

California lomatium, chu-chu-pate. Native perennial. 

Lomatium caruifolium (Hooker & Arnott) Coulter & Rose var. caruifolium 

Caraway-leaved desert-parsley, alkali-parsnip. Native perennial. 

Lomatium caruifolium (Hooker & Arnott) Coulter & Rose var. denticulatum (Jepson) Jepson 

Caraway-leaved lomatium. Native perennial. 

Lomatium ciliolatum Jepson var. ciliolatum 

Yolla Bolly lomatium. Native perennial. 

Lomatium ciliolatum Jepson var. hooveri Mathias & Constance 

Hoover's lomatium, Hoover's desert-parsley. Native perennial. 

Lomatium dasycarpum (Torrey & Gray) Coulter & Rose ssp. dasycarpum 

Woolly-fruited lace-parsnip. Native perennial. 

Lomatium dissectum (Nuttall ex Torrey & Gray) Mathias & Constance var. dissectum 

Fern-leaved lomatium, ritual root. Native perennial. 

Lomatium dissectum var. multifidum (Nuttall ex Torrey & Gray) Mathias & Constance 

Fern-leaved lomatium. Native perennial. 

Lomatium engelmannii Mathias 

Engelmann's lomatium. Endemic perennial. CNPS List 4.3 

Lomatium hallii (Watson) Coulter & Rose 

Hall’s lomatium. Native perennial. 

Lomatium howellii (Watson) Jepson 

Howell's lomatium. Endemic perennial. CNPS List 4.3 

Lomatium macrocarpum (Nuttall ex Torrey & Gray) Coulter & Rose 

Large-fruited lomatium, sheep-parsnip. Native perennial. 

Lomatium marginatum (Bentham) Coulter & Rose var. marginatum 

Hartweg's lomatium, Butte desert parsley. Native perennial. 

Lomatium marginatum (Bentham) Coulter & Rose var. purpureum Jepson 

Butte desert parsley. Native perennial. 

Lomatium martindalei (Coulter & Rose) Coulter & Rose 

Coast range lomatium. Native perennial. CNPS List 2.3 

Lomatium nudicaule (Pursh) Coulter & Rose 

Pestle-parsnip. Native perennial. 

Lomatium peckianum Mathias & Constance 

Peck's lomatium. Native perennial. CNPS List 2.2 

Lomatium piperi Coulter & Rose 

Piper's lomatium, Indian biscuit. Native perennial. 

Lomatium repostum (Jepson) Mathias 

Napa lomatium. Native perennial. CNPS List 4.3 

Lomatium tracyi Mathias & Constance 

Tracy's lomatium. Native perennial. CNPS List 4.3 

Lomatium triternatum (Pursh) Coulter & Rose var. macrocarpum (Coulter & Rose) Mathias 

Desert-parsley. Native perennial. 

Lomatium triternatum (Pursh) Coulter & Rose var. triternatum 

Lewis' lomatium, buck-parsnip. Native perennial. 

Lomatium utriculatum (Nuttall ex Torrey & Gray) Coulter & Rose 

Common lomatium, bladder-desert parsley, spring gold. Native perennial. 

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Lomatium vaginatum Coulter & Rose 

Sheathed lomatium. Native perennial. 

Oenanthe pimpinelloides Linnaeus 

Water dropwort, oenanthe. Non-native perennial. 

Oenanthe sarmentosa Presl ex de Candolle 

Water dropwort, water-parsley, Pacific oenanthe. Native perennial. 

Orogenia fusiformis Watson 

California orogenia. Native perennial. 

Osmorhiza berteroi de Candolle 

Mountain sweet-cicely. Native perennial. 

Osmorhiza occidentalis (Nuttall ex Torrey & Gray) Torrey 

Western sweet-cicely. Native perennial. 

Osmorhiza purpurea (Coulter & Rose) Suksdorf 

Purple sweet-cicely. Native perennial. 

Oxypolis occidentalis Coulter & Rose 

Cowbane, Pacific cowbane. Native perennial. 

Pastinaca sativa Linnaeus 

Wild parsnip, parsnip. Non-native perennial. 

Perideridia bolanderi (Gray) Nelson & Macbride ssp. bolanderi 

Bolander's yampah. Native perennial. 

Perideridia gairdneri (Hooker & Arnott) Mathias ssp. borealis Chuang & Constance 

Gairdner's yampah. Native perennial. CNPS List 4.2 

Perideridia gairdneri (Hooker & Arnott) Mathias ssp. gairdneri 

Common yampah. Native perennial. 

Perideridia howellii (Coulter & Rose) Mathias 

Howell's yampah. Native perennial. 

Perideridia kelloggii (Gray) Mathias 

Kellogg's yampah. Native perennial. 

Perideridia leptocarpa Chuang & Constance 

Narrow-seeded yampah. Endemic perennial. CNPS List 4.3 

Perideridia oregana (Watson) Mathias 

Oregon yampah. Native perennial. 

Perideridia parishii (Coulter & Rose) Nelson & Macbride ssp. latifolia (Gray) Chuang & Constance 

Parish's yampah. Native perennial. 

Petroselinum crispum (P. Miller) Nyman ex A. W. Hill 

Parsley. Non-native annual-perennial. 

Sanicula arctopoides Hooker & Arnott 

Bear's-foot sanicle, snakeroot, footsteps-of-spring, yellow mats. Native perennial. 

Sanicula bipinnata Hooker & Arnott 

Poison sanicle. Native perennial. 

Sanicula bipinnatifida Douglas ex Hooker 

Purple sanicle, shoe buttons. Native perennial. 

Sanicula crassicaulis Poeppig ex de Candolle 

Pacific sanicle. Native perennial. 

Sanicula graveolens Poeppig ex de Candolle 

Sierra sanicle. Native perennial. 

Sanicula laciniata Hooker & Arnott 

Coast sanicle. Native perennial. 

Sanicula peckiana Macbride 

Peck's sanicle. Native perennial. CNPS List 4.3 

Sanicula tracyi Shan & Constance 

Tracy's sanicle. Endemic perennial. CNPS List 4.2 

Sanicula tuberosa Torrey 

Tuberous sanicle, turkey-pea. Native perennial. 

Scandix pecten-veneris Linnaeus 

Shepherd's needle, Venus' comb, lady's comb, Venus' needle. Non-native annual. 

Sium suave Walter var. suave 

Water-parsnip, hemlock water-parsnip. Non-native perennial. 

Sphenosciadium capitellatum Gray 

Swamp white heads, ranger's buttons, white heads. Native perennial. 

Tauschia glauca (Coulter & Rose) Mathias & Constance 

Glaucous tauschia, glaucous umbrella wort. Endemic perennial. CNPS List 4.3 

Tauschia howellii (Coulter & Rose) Macbride 

Howell's tauschia, Howell’s umbrella wort. Endemic perennial. CNPS List 1B.3 

Tauschia kelloggii (Gray) Macbride 

Kellogg's tauschia, Kellogg’s umbrella wort. Native perennial. 

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Torilis arvensis (Hudson) Link ssp. heterophylla (Gussone) Thellung 

Spreading hedge-parsley. Non-native annual. 

Torilis arvensis (Hudson) Link ssp. purpurea (Tenore) Hayek 

Field hedge-parsley. Non-native annual. 

Torilis nodosa (Linnaeus) Gaertner 

Knotted hedge-parsley. Non-native annual. 

Yabea microcarpa (Hooker & Arnott) Kozo-Poliansky 

False hedge-parsley. Native annual. 

URTICACEAE • Nettle Family 

Hesperocnide tenella Torrey 

Western nettle. Native annual. Historic collection. 

Parietaria pensylvanica Muhlenberg ex von Willdenow 

Pellitory. Native annual. 

Urtica dioica Linnaeus ssp. dioica 

Stinging nettle. Native perennial. 

Urtica dioica Linnaeus ssp. gracilis (Aiton) Selander 

Stinging nettle. Native perennial. 

Urtica dioica Linnaeus ssp. holosericea (Nuttall) Thorne 

Creek nettle, hoary nettle. Native perennial. 

Urtica urens Linnaeus 

Small nettle, dwarf nettle. Non-native annual. 

VALERIANACEAE • Valerian Family 

Centranthus ruber (Linnaeus) de Candolle ssp. ruber 

Red-valerian, Jupiter's beard. Non-native annual-perennial. 

Plectritis ciliosa (Greene) Jepson spp. ciliosa 

Long-spurred sea blush. Native annual. 

Plectritis ciliosa (Greene) Jepson ssp. insignis (Suksdorf) D. Morey 

Long-spurred sea blush. Native annual. 

Plectritis congesta (Lindley) de Candolle ssp. brachystemon (Fischer & Meyer) Morey 

Short-spurred sea blush. Native annual. 

Plectritis congesta (Lindley) de Candolle ssp. congesta 

Pink sea blush. Native annual. 

Plectritis congesta (Lindley) de Candolle ssp. nitida (Heller) Morey 

Decumbent sea blush. Native annual. 

Plectritis macrocera Torrey & Gray ssp. grayii (Suksdorf) Morey 

White sea blush. Native annual. 

Plectritis macrocera Torrey & Gray ssp. macrocera 

Long-horned sea blush. Native annual. 

Valeriana californica Heller 

California valerian. Native perennial. 

Valeriana scouleri Rydberg 

Scouler's valerian. Native perennial. 

Valeriana sitchensis Bongard 

Mountain-heliotrope. Native perennial. 

Valerianella locusta (Linnaeus) Betcke 

Lamb's-lettuce, corn salad. Non-native annual. 

VERBENACEAE • Verbena or Vervain Family 

Phyla nodiflora (Linnaeus) Greene 

Mat-grass. Non-native perennial. 

Verbena lasiostachys Link 

Western verbena, western vervain. Native perennial. 

Verbena officinalis Linnaeus var. officinalis 

Vervain, herb-of-the-cross. Non-native perennial. 

VIOLACEAE • Violet Family 

Viola adunca J. E. Smith var. adunca 

Western dog violet, western long-spurred violet. Native perennial. 

Viola bakeri Greene 

Baker's violet. Native perennial. 

Viola cuneata Watson 

Wedge-leaved violet, butterfly violet. Native perennial. 

Viola douglasii Steudel 

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Golden violet, gold violet. Native perennial. 

Viola glabella Nuttall 

Stream violet, smooth yellow violet, woodland violet, pioneer violet. Native perennial. 

Viola hallii Gray 

Hall's violet, Oregon pansy. Native perennial. 

Viola howellii Gray 

Howell’s violet. Native perennial. 

Viola langsdorfii (Regel) Fischer ex Gingins 

Aleutian violet. Native perennial. CNPS List 2.1 

Viola lobata Bentham ssp. integrifolia (Watson) R. J. Little 

Moose-horn violet. Native perennial. 

Viola lobata Bentham ssp. lobata 

Pine violet, yellow wood violet, wood violet. Native perennial. 

Viola macloskeyi Lloyd ssp. macloskeyi 

Small white violet, western wood violet. Native perennial. 

Viola macloskeyi Lloyd ssp. pallens (Banks ex de Candolle) M. S. Baker 

Small white violet. Native perennial. 

Viola ocellata Torrey & Gray 

Two-eyed violet, pinto pansy, western heart's ease. Native perennial. 

Viola odorata Linnaeus 

Sweet blue violet. Non-native perennial. 

Viola palustris Linnaeus var. palustris 

Marsh violet. Native perennial. CNPS List 2.2 

Viola pedunculata Torrey & Gray ssp. pedunculata 

California golden violet, grass pansy, Johnny jump-up. Native perennial. 

Viola praemorsa Douglas ex Lindley ssp. linguifolia (Torrey & Gray) Baker & Clausen 

Upland yellow violet. Native perennial. 

Viola praemorsa Douglas ex Lindley ssp. praemorsa 

Astoria violet, upland yellow violet. Native perennial. 

Viola primulifolia Linnaeus ssp. occidentalis (Gray) McKinney & Little 

Western bog violet. Endemic perennial. CNPS List 1B.2 

Viola purpurea Kellogg ssp. dimorpha Baker & Clausen 

Purple-tinged violet. Native perennial. 

Viola purpurea Kellogg ssp. integrifolia Baker & Clausen 

Purple-tinged violet. Native perennial. 

Viola purpurea Kellogg ssp. purpurea 

Purple-tinged violet, pine violet, mountain violet. Native perennial. 

Viola purpurea Kellogg ssp. quercetorum (Baker & Clausen) R. J. Little 

Oak woods violet. Native perennial. 

Viola sempervirens Greene 

Redwood violet, evergreen violet. Native perennial. 

Viola sheltonii Torrey 

Shelton's violet, fan violet. Native perennial. 

Viola sororia von Willdenow ssp. affinis (Le Conte) R. J. Little 

Le Conte's violet. Native perennial. 

VISCACEAE • Mistletoe Family 

Arceuthobium abietinum Engelmann ex Munz 

Fir dwarf mistletoe. Native perennial. 

Arceuthobium americanum Nuttall ex Englemann in Gray 

Lodgepole pine dwarf mistletoe. Native perennial. 

Arceuthobium californicum Hawksworth & Wiens 

California dwarf mistletoe, sugar pine dwarf mistletoe. Native perennial. 

Arceuthobium campylopodum Engelmann in Gray 

Western dwarf mistletoe. Native perennial. 

Arceuthobium cyanocarpum Coulter & A. Nelson 

Dwarf mistletoe, limber pine dwarf mistletoe. Native perennial. 

Arceuthobium douglasii Engelmann ex L. C. Wheeler 

Douglas-fir dwarf mistletoe. Native perennial. 

Arceuthobium littorum Hawksworth, Wiens, & Nickrent 

Coastal dwarf mistletoe. Native perennial. 

Arceuthobium monticola Hawksworth, Wiens, & Nickrent 

Western white pine dwarf mistletoe. Endemic perennial. 

Arceuthobium occidentale Engelmann 

Foothill pine dwarf mistletoe. Native perennial. 

Arceuthobium siskiyouense Hawksworth, Wiens, & Nickrent 

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Knobcone pine dwarf mistletoe. Endemic perennial. 

Arceuthobium tsugense (Rosendal) G. N. Jones ssp. mertensianae Hawksworth & Nickrent 

Hemlock dwarf mistletoe. Native perennial. 

Arceuthobium tsugense (Rosendal) G. N. Jones ssp. tsugense 

Hemlock dwarf mistletoe. Native perennial. 

Phoradendron densum Torrey ex Trelease 

Cypress mistletoe, dense mistletoe. Native shrub. 

Phoradendron libocedri (Engelmann) T. J. Howell 

Incense-cedar mistletoe. Native shrub. 

Phoradendron macrophyllum (Engelmann) Cockerell ssp. macrophyllum 

Bigleaf mistletoe, Colorado Desert mistletoe. Native shrub. 

Phoradendron villosum (Nuttall) Nuttall ssp. villosum 

Hairy mistletoe, common mistletoe, oak mistletoe. Native shrub. 

VITACEAE • Grape Family 

Vitis californica Bentham 

California wild grape. Native vine. 

ZOSTERACEAE • Eel-Grass Family 

Phyllospadix scouleri Hooker 

Scouler's surf-grass. Native perennial. 

Phyllospadix torreyi Watson 

Torrey's surf-grass. Native perennial. 

Zostera japonica Ascherson & Graebner in Engler 

Japanese surf-grass. Non-native perennial. 

Zostera marina Linnaeus 

Eel-grass, sea wrack. Native perennial. 

ZYGOPHYLLACEAE • Caltrop Family 

Tribulus terrestris Linnaeus 

Puncture vine, goat head. Non-native annual. 

Zygophyllum fabago Linnaeus 

Bean-caper. Non-native perennial. 

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LIST 2 • FAMILY NAMES: COMMON TO TECHNICAL 

The purpose of this list is to allow you to 

access the main checklist, which is arranged 

by the technical names of plant families, by 

using their common names. 

Adder's-tongue Ophioglossaceae 

Agave Liliaceae 

Alder Betulaceae 

Aloe Liliaceae 

Amaryllis Liliaceae 

Aralia Araliaceae 

Aroid Araceae 

Arrow-grass Juncaginaceae 

Arrowhead Alismataceae 

Arum Araceae 

Ash Oleaceae 

Asparagus Liliaceae 

Asphodel Liliaceae 

Aster Compositae 

Avocado Lauraceae 

Bald cypress Cupressaceae 

Balsam Balsaminaceae 

Barberry Berberidaceae 

Bastard toadflax Comandraceae 

Bean Leguminosae 

Beech Fagaceae 

Bee plant Cleomaceae 

Bellflower Campanulaceae 

Bignon [-ia] Bignoniaceae 

Bindweed Convolvulaceae 

Birch Betulaceae 

Birthwort Aristolochiaceae 

Bittersweet Celastraceae 

Bladdernut Staphyleaceae 

Bladderwort Lentibulariaceae 

Blazing star Loasaceae 

Bluebell Campanulaceae 

Bogbean Menyanthaceae 

Borage Hydrophyllaceae 

Boxwood Pittosporaceae 

Bracken fern Dennstaedtiaceae 

Brake fern Pteridaceae 

Brodiaea Liliaceae 

Broomrape Scrophulariaceae 

Buckbean Menyanthaceae 

Buckeye Sapindaceae 

Buckthorn Rhamnaceae 

Bur-reed Sparganiaceae 

Buttercup Ranunculaceae 

Cactus Cactaceae 

Caltrop Zygophyllaceae 

Cape pondweed Aponogetonaceae 

Carnation Caryophyllaceae 

Carpet weed Molluginaceae 

Carrot Umbelliferae 

Cashew Anacardiaceae 

Catalpa Bignoniaceae 

Cat-tail Typhaceae 

Cedar Cupressaceae 

Century plant Liliaceae 

Chain fern Blechnaceae 

Chenopod Amaranthaceae 

Cliff brake fern Pteridaceae 

Club-moss Lycopodiaceae 

Cotton Malvaceae 

Crossosoma Crossosomataceae 

Crowberry Ericaceae 

Crowfoot Ranunculaceae 

Crucifer Cruciferae 

Cucurbit Cucurbitaceae 

Currant Grossulariaceae 

Cypress Cupressaceae 

Daisy Compositae 

Datisca Datiscaceae 

Deer fern Blechnaceae 

Ditch-grass Ruppiaceae 

Dodder Convolvulaceae 

Dogbane Apocynaceae 

Dogwood Cornaceae 

Doll’s-lily Tecophilaeaceae 

Duckweed Araceae 

Durango root Datiscaceae 

Dutchman’s pipe Aristolochiaceae 

Ebony Ebenaceae 

Eel-grass Zosteraceae 

Eucalyptus Myrtaceae 

Euphorb Euphorbiaceae 

Evening primrose Onagraceae 

False mermaid Limnanthaceae 

Fig Moraceae 

Flax Linaceae 

Forget-me-not Boraginaceae 

Foxglove Scrophulariaceae 

Frankenia Frankeniaceae 

Frog's bit Hydrocharitaceae 

Four o’clock Nyctaginaceae 

Fumitory Papaveraceae 

Gentian Gentianaceae 

Geranium Geraniaceae 

Ginseng Araliaceae 

Gooseberry Grossulariaceae 

Goosefoot Chenopodiaceae 

Gourd Cucurbitaceae 

Grape Vitaceae 

Grass Gramineae 

Grass-of-Parnassus Parnassiaceae 

Grass wrack Potamogetonaceae 

Greenbrier [-briar] Smilacaceae 

Harebell Campanulaceae 

Heath Ericaceae 

Hemp Cannabaceae 

Hickory Juglandaceae 

Holly Aquifoliaceae 

Holly fern Dryopteridaceae 

Honey bush Melianthaceae 

Honeysuckle Caprifoliaceae 

Hops Cannabacceae 

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Horned pondweed Potamogetonaceae 

Hornwort Ceratophyllaceae 

Horse chestnut Sapindaceae 

Horsetail Equisetaceae 

Hyacinth Liliaceae 

Hydrangea Hydrangeaceae 

Hydrophyll Hydrophyllaceae 

Ice plant Aizoaceae 

Indian-chickweed Molluginaceae 

Indian pipe Ericaceae 

Iris Iridaceae 

Ivy Araliaceae 

Jewel weed Balsaminaceae 

Juniper Cupressaceae 

Knotweed Polygonaceae 

Laurel Lauraceae 

Leadwort Plumbaginaceae 

Legume Leguminosae 

Lily Liliaceae 

Lily-of-the-valley Liliaceae 

Lizard tail Saururaceae 

Loasa Loasaceae 

Lobelia Campanulaceae 

Loosestrife Lythraceae 

Madder Rubiaceae 

Mahogany Meliaceae 

Mallow Malvaceae 

Maple Aceraceae 

Mare's tail Hippuridaceae 

Marijuana Cannabaceae 

Martynia Martyniaceae 

Meadow foam Limnanthaceae 

Melianthus Melianthaceae 

Mignonette Resedaceae 

Milfoil Haloragaceae 

Milkweed Apocynaceae 

Milkwort Polygalaceae 

Mint Labiatae 

Mistletoe Viscaceae 

Moonwort fern Ophioglossaceae 

Morning-glory Convolvulaceae 

Mosquito fern Azollaceae 

Mulberry Moraceae 

Mustard Cruciferae 

Myrtle Myrtaceae 

Naiad Hydrocharitaceae 

Nasturtium Tropaeolaceae 

Nettle Urticacee 

Nightshade Solanaceae 

Oak Fagaceae 

Oleander Apocynaceae 

Oleaster Elaeagnaceae 

Olive Oleaceae 

Onion Liliaceae 

Orchid Orchidaceae

Orpine Crassulaceae 

Oxalis Oxalidaceae 

Paeony [-ia] Paeoniaceae 

Parsley Umbelliferae 

Pea Leguminosae 

Pennyroyal Hydrocotylaceae 

Philodendron Araceae 

Phlox Polemoniaceae 

Pickerel weed Pontederiaceae 

Pigweed Amaranthaceae 

Pine Pinaceae 

Pink Caryophyllaceae 

Pitcher plant Sarraceniaceae 

Pittosporum Pittosporaceae 

Plane tree Platanaceae 

Plantago Plantaginaceae 

Plantain Plantaginaceae 

Poison-oak Anacardiaceae 

Pokeweed Phytolaccaceae 

Polypody fern Polypodiaceae 

Pondweed Potamogetonaceae 

Poplar Salicaceae 

Poppy Papaveraceae 

Potato Solanaceae 

Primrose Primulaceae 

Princess tree Paulowniaceae 

Pulse Leguminosae 

Pumpkin Cucurbitaceae 

Purslane Portulacaceae 

Quassia Simaroubaceae 

Quillwort Isoëtaceae 

Rock-rose Cistaceae 

Rose Rosaceae 

Rue Rutaceae 

Rush Juncaceae 

Russian-olive Elaeagnaceae 

Salt-cedar Tamaricaceae 

Sandalwood Santalaceae 

Saxifrage Saxifragaceae 

Scouring-rush Equisetaceae 

Scroph Scrophulariaceae 

Sedge Cyperaceae 

Silktassel Garryaceae 

Silverbell Styracaceae 

Smartweed Polygonaceae 

Smilax Smilacaceae 

Soapberry Sapindaceae 

Sorrel Oxalidaceae 

Spice bush Calycanthaceae 

Spider flower Cleomaceae 

Spiderwort Commelinaceae 

Spike-moss Selaginellaceae 

Spikenard Araliaceae 

Spindle tree Celastraceae 

Spleenwort Aspleniaceae 

Spurge Euphorbiaceae 

Squash Cucurbitaceae 

Staff tree Celastraceae 

Starwort Callitrichaceae 

Stinging nettle Urticaceae 

St. John's wort Hypericaceae 

Stonecrop Crassulaceae 

Storax Styracaceae 

Styrax Styracaceae 

Sumac Anacardiaceae 

Sundew Droseraceae 

Sunflower Compositae 

Sweet flag Acoraceae 

Sweetgale Myricaceae 

Sword fern Dryopteridaceae 

Sycamore Platanaceae 

Tamarisk Tamaricaceae 

Teasel Dipsacaceae 

Thrift Plumbaginaceae 

Touch-me-not Balsaminaceae 

Trillium Liliaceae 

Twinflower Caprifoliaceae 

Umbel Umbelliferae 

Unicorn plant Martyniaceae 

Valerian Valerianaceae 

Verbena Verbenaceae 

Vervain Verbenaceae 

Violet Violaceae 

Walnut Juglandaceae 

Water clover fern Marsileaceae 

Water hawthorn Aponogetonaceae 

Waterleaf Boraginaceae 

Water-lily Nymphaeaceae 

Water milfoil Haloragaceae 

Water nymph Hydrocharitaceae 

Water-plantain Alismataceae 

Water shield Nymphaeaceae 

Water starwort Callitrichaceae 

Waterwort Elatinaceae 

Wax myrtle Myricaceae 

Willow Salicaceae 

Wintergreen Ericaceae 

Wood fern Thelypteridaceae 

Wood sorrel Oxalidaceae 

Yew Taxaceae 

Revised: 11 October 2010 

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L I S T 3 • C O M M O N N A M E S 

The purpose of this list is to allow you to find the generic 

name of a plant and the technical name of plant family to 

which it belongs when you know its common name. 

Acacia --> Acacia (Leguminosae) 

Adder's tongue --> Scoliopus (Liliaceae) 

Adder's tongue fern Botrychium (Ophioglossaceae) 

Adobe lily --> Fritillaria (Liliaceae) 

Ageratum --> Ageratum (Compositae) 

Agoseris --> Agoseris (Compositae) 

Agrimony --> Agrimonia (Rosaceae) 

Ailanthus --> Ailanthus (Simaroubaceae) 

Alaska yellow-cedar Chamaecyparis (Cupressaceae) 

Alaska-cedar --> Hesperocyparis (Cupressaceae) 

Alder --> Alnus (Betulaceae) 

Alfalfa --> Medicago (Leguminosae) 

Alkali grass --> Puccinellia (Gramineae) 

Alkali weed --> Cressa (Convolvulaceae) 

Alkali-heath --> Frankenia (Frankeniaceae) 

Alkali-mallow --> Malvella (Malvaceae) 

Alkali-parsnip --> Lomatium (Umbelliferae) 

Alkanet --> Amsinckia (Boraginaceae) 

Allocarya --> Allocarya (Boraginaceae) 

Allseed --> Polycarpon (Caryophyllaceae) 

Almond --> Prunus (Rosaceae) 

Alpine-aster --> Oreostemma (Compositae) 

Alpine lake agoseris --> Nothocalais (Compositae) 

Alum root --> Heuchera (Saxifragaceae) 

Alyssum --> Alyssum (Cruciferae) 

Amaranth --> Amaranthus (Amaranthaceae) 

American-aster --> Symphyotrichum (Compositae) 

Amole --> Chlorogalum (Asphodelaceae) 

Androsace --> Androsace (Primulaceae) 

Anemone--> Anemone (Ranunculaceae) 

Angelica --> Angelica (Umbelliferae) 

Annual fescue --> Festuca (Gramineae) 

Antelope bush --> Purshia (Rosaceae) 

Apple --> Malus (Rosaceae) 

Archangel --> Lamiastrum (Labiatae) 

Arnica --> Arnica (Compositae) 

Arrow-grass --> Triglochin (Hydrocharitaceae) 

Arrowhead --> Sagittaria (Alismataceae) 

Artichoke --> Cynara (Compositae) 

Artichoke thistle --> Cynara (Compositae) 

Arum --> Arum (Araceae) 

Ash --> Fraxinus (Oleaceae) 

Asparagus --> Asparagus (Liliaceae) 

Aster --> Aster (Compositae) 

Aster --> Eurybia (Compositae) 

Aster --> Oreostemma (Compositae) 

Aster --> Sericocarpus (Compositae) 

Aster --> Symphyotrichum (Compositae) 

Asthma weed --> Conyza (Compositae) 

Avalanche lily --> Erythronium (Liliaceae) 

Avens --> Geum (Rosaceae) 

Azalea --> Rhododendron (Ericaceae) 

Baby blue-eyes --> Nemophila (Boraginaceae) 

Baby's breath --> Gypsophila (Caryophyllaceae) 

Babystars --> Linanthus (Polemoniaceae) 

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Baccharis --> Baccharis (Compositae) 

Bachelor's buttons --> Centaurea (Compositae) 

Baeria --> Lasthenia (Compositae) 

Balm --> Melissa (Labiatae) 

Balsamroot --> Balsamorhiza (Compositae) 

Baneberry --> Actaea (Ranunculaceae) 

Barberry --> Berberis (Berberidaceae) 

Barberry --> Mahonia (Berberidaceae) 

Barley --> Hordeum (Gramineae) 

Barnyard grass --> Echinochloa (Gramineae) 

Bassia --> Bassia (Amaranthaceae) 

Bastard toadflax --> Comandra (Santalaceae) 

Bayberry --> Morella (Myricaceae) 

Bay tree --> Umbellularia (Lauraceae) 

Beach bur --> Ambrosia (Compositae) 

Beach grass --> Elymus (Gramineae) 

Beach sage --> Artemisia (Compositae) 

Beach wormwood --> Artemisia (Compositae) 

Beach-primrose --> Camissonia (Onagraceae) 

Beaked-rush --> Rhynchospora (Cyperaceae) 

Bean-caper --> Zygophyllum (Zygophyllaceae) 

Bear brush --> Garrya (Garryaceae) 

Bear-grass --> Xerophyllum (Liliaceae) 

Bearberry --> Arctostaphylos (Ericaceae) 

Beard grass --> X Agropogon (Gramineae) 

Beard grass --> Polypogon (Gramineae) 

Beardtongue --> Penstemon (Scrophulariaceae) 

Beavertail-grass --> Calochortus (Liliaceae) 

Bedstraw --> Galium (Rubiaceae) 

Bee plant --> Scrophularia (Scrophulariaceae) 

Bee-thistle --> Eryngium (Umbelliferae) 

Beggar-ticks --> Bidens (Compositae) 

Belladonna lily --> Amaryllis (Liliaceae) 

Bellardia --> Bellardia (Orobanchaceae) 

Bensonia --> Bensoniella (Saxifragaceae) 

Bent grass --> Agrostis (Gramineae) 

Bergia --> Bergia (Elatinaceae) 

Bermuda grass --> Cynodon (Gramineae) 

Bermuda-buttercup --> Oxalis (Oxalidaceae) 

Biddi-biddi --> Acaena (Rosaceae) 

Big root --> Marah (Cucurbitaceae) 

Big tree --> Sequoiadendron (Cupressaceae) 

Bilberry --> Vaccinium (Ericaceae) 

Bindweed --> Calystegia (Convolvulaceae) 

Bindweed --> Convolvulus (Convolvulaceae) 

Bird's eyes --> Gilia (Polemoniaceae) 

Bird's beak --> Cordylanthus (Orobanchaceae) 

Bird's foot fern --> Pellaea (Adiantaceae) 

Bishop's cap --> Mitella (Saxifragaceae) 

Bishop's weed --> Ammi (Umbelliferae) 

Bistort --> Bistorta (Polygonaceae) 

Bitter root --> Lewisia (Portulacaceae) 

Bitter-cress --> Cardamine (Cruciferae) 

Black-eyed Susan --> Rudbeckia (Compositae) 

Black haw --> Crataegus (Rosaceae) 

Black locust --> Robinia (Leguminosae) 

Black-bindweed --> Polygonum (Polygonaceae) 

Black-laurel --> Leucothoë (Ericaceae) 

Blackberry --> Rubus (Rosaceae) 

Bladder-campion --> Silene (Caryophyllaceae)

Bladderwort --> Utricularia (Lentibulariaceae) 

Blazing star --> Mentzelia (Loasaceae) 

Bleeding hearts --> Dicentra (Papaveraceae) 

Blennosperma --> Blennosperma (Compositae) 

Blessed thistle --> Centaurea (Compositae) 

Blinks --> Montia (Portulacaceae) 

Blow wives --> Achyrachaena (Compositae) 

Blueberry --> Vaccinium (Ericaceae) 

Blue blossom --> Ceanothus (Rhamnaceae) 

Blue brush --> Ceanothus (Rhamnaceae) 

Blue bunch grass --> Festuca (Gramineae) 

Bluecups --> Githopsis (Campanulaceae) 

Bluecurls --> Trichostema (Labiatae) 

Blue dicks --> Dichelostemma (Liliaceae) 

Blue-eyed-grass --> Sisyrinchium (Iridaceae) 

Blue-eyed-grass --> Olsynium (Iridaceae) 

Blue-eyed Mary --> Collinsia (Scrophulariaceae) 

Blue flag --> Iris (Iridaceae) 

Blue grass --> Poa (Gramineae) 

Bluegum --> Eucalyptus (Myrtaceae) 

Bluejacket --> Tradescantia (Commelinaceae) 

Bluejoint --> Calamagrostis (Gramineae) 

Blue-lily --> Triteleia (Liliaceae) 

Blue pod --> Lupinus (Leguminosae) 

Blue weed --> Echium (Boraginaceae) 

Blue witch --> Solanum (Solanaceae) 

Bog candles --> Platanthera (Orchidaceae) 

Bog orchid --> Platanthera (Orchidaceae) 

Bog-asphodel --> Narthecium (Nartheciaceae) 

Bogbean --> Menyanthes (Menyanthaceae) 

Bogmat --> Wolffia (Araceae) 

Boisduvalia --> Boisduvalia (Onagraceae) 

Borage --> Borago (Boraginaceae) 

Bouncing bet --> Saponaria (Caryophyllaceae) 

Boxelder --> Acer (Sapindaceae) 

Boxwood --> Paxistima (Celastraceae) 

Boykinia --> Boykinia (Saxifragaceae) 

Bracken --> Pteridium (Dennstaedtiaceae) 

Bracken fern --> Pteridium (Dennstaedtiaceae) 

Brake fern --> Pteridium (Dennstaedtiaceae) 

Bramble --> Rubus (Rosaceae) 

Brass buttons --> Cotula (Compositae) 

Bread wheat --> Triticum (Gramineae) 

Brickellia --> Brickellia (Compositae) 

Bride's bonnet --> Clintonia (Liliaceae) 

Bride’s feather --> Aruncus (Rosaceae) 

Bristle grass --> Setaria (Gramineae) 

Bristly-mallow --> Modiola (Malvaceae) 

Brittle fern --> Cystopteris (Woodsiaceae) 

Brittle scale --> Atriplex (Amaranthaceae) 

Brodiaea --> Brodiaea (Liliaceae) 

Brodiaea --> Dichelostemma (Liliaceae) 

Brodiaea --> Triteleia (Liliaceae) 

Brome --> Bromus (Gramineae) 

Brook foam --> Boykinia (Saxifragaceae) 

Brrokfoam --> Suksdorfia (Saxifragaceae) 

Brooklime --> Veronica (Orobanchaceae) 

Broom --> Cytisus (Leguminosae) 

Broom --> Genista (Leguminosae) 

Broom --> Spartium (Leguminosae) 

Broomrape --> Orobanche (Orobanchaceae) 

Brownies --> Scoliopus (Liliaceae) 

Buck brush --> Ceanothus (Rhamnaceae) 

Buckbean --> Menyanthes (Menyanthaceae) 

Buckeye --> Aesculus (Sapindaceae) 

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Buckthorn --> Frangula (Rhamnaceae) 

Buckthorn --> Rhamnus (Rhamnaceae) 

Buckwheat --> Eriogonum (Polygonaceae) 

Bugleweed --> Lycopus (Labiatae) 

Bulrush --> Bolboschoenus (Cyperaceae) 

Bulrush --> Isolepis (Cyperaceae) 

Bulrush --> Schoenoplectus (Cyperaceae) 

Bulrush --> Scirpus (Cyperaceae) 

Bunch berry --> Cornus (Cornaceae) 

Bur head --> Echinodorus (Alismataceae) 

Bur weed --> Ambrosia (Compositae) 

Bur-chervil --> Anthriscus (Umbelliferae) 

Bur-clover --> Medicago (Leguminosae) 

Bur-marigold --> Bidens (Compositae) 

Bur-reed --> Sparganium (Sparganiaceae) 

Burdock --> Arctium (Compositae) 

Burnet --> Sanguisorba (Rosaceae) 

Burning bush --> Euonymus (Celastraceae) 

Bush-mallow --> Malacothamnus (Malvaceae) 

Butter-and-eggs --> Linaria (Scrophulariaceae) 

Butter-and-eggs --> Triphysaria (Orobanchaceae) 

Buttercup --> Ranunculus (Ranunculaceae) 

Butterfly bush --> Buddleja (Scrophulariaceae) 

Butterfly weed --> Heterogaura (Onagraceae) 

Butterweed --> Senecio (Compositae) 

Butterweed --> Packera (Compositae) 

Butterwort --> Pinguicula (Lentibulariaceae) 

Button bush --> Cephalanthus (Rubiaceae) 

Button-celery --> Eryngium (Umbelliferae) 

Calf's-head --> Darlingtonia (Sarraceniaceae) 

Calico flower --> Downingia (Campanulaceae) 

California-aster --> Corethrogyne (Compositae) 

California bay --> Umbellularia (Lauraceae) 

California-chicory --> Rafinesquia (Compositae) 

California-fuchsia --> Epilobium (Onagraceae) 

California-laurel --> Umbellularia (Lauraceae) 

California mustard --> Caulanthus (Cruciferae) 

California-nutmeg --> Torreya (Taxaceae) 

California pinefoot --> Pityopus (Ericaceae) 

California-poppy --> Eschscholzia (Papaveraceae) 

California snakeroot Aristolochia (Aristolochiaceae) 

California-tea --> Psoralea (Leguminosae) 

Calla-lily --> Zantedeschia (Araceae) 

Calycadenia --> Calycadenia (Compositae) 

Calypso orchid --> Calypso (Orchidaceae) 

Camas(s) --> Camassia (Liliaceae) 

Camphor weed --> Trichostema (Labiatae) 

Campion --> Silene (Caryophyllaceae) 

Canary grass --> Phalaris (Gramineae) 

Canchalagua --> Centaurium (Gentianaceae) 

Candy flower --> Claytonia (Portulacaceae) 

Candy grass --> Eragrostis (Gramineae) 

Canoe-cedar --> Thuja (Cupressaceae) 

Cape-ivy --> Delairia (Compositae) 

Cape pondweed --> Aponogeton (Aponogetonaceae) 

Cape weed --> Arctotheca (Compositae) 

Cardoon --> Cynara (Compositae) 

Carpet weed --> Chrysosplenium (Saxifragaceae) 

Carpet weed --> Mollugo (Molluginaceae) 

Carrot --> Daucus (Umbelliferae) 

Cascara --> Frangula (Rhamnaceae) 

Cascara sagrada --> Frangula (Rhamnaceae) 

Castor bean --> Ricinus (Euphorbiaceae) 

Catalpa --> Catalpa (Bignoniaceae)

Cat's ear --> Calochortus (Liliaceae) 

Cat's ear --> Hypochoeris (Compositae) 

cat’s-eye --> Cryptantha (Boraginaceae) 

Cat-tail --> Typha (Typhaceae) 

Catchfly --> Silene (Caryophyllaceae) 

Catnip --> Nepeta (Labiatae) 

Ceanothus --> Ceanothus (Rhamnaceae) 

Celery --> Apium (Umbelliferae) 

Centuary --> Centaurium (Gentianaceae) 

Chaenactis --> Chaenactis (Compositae) 

Chaff weed --> Anagallis (Myrsinaceae) 

Chain fern --> Woodwardia (Blechnaceae) 

Chamise --> Adenostoma (Rosaceae) 

Chamomile --> Anthemis (Compositae) 

Chaparral broom --> Baccharis (Compositae) 

Chaparral-pea --> Pickeringia (Leguminosae) 

Charlock --> Raphanus (Cruciferae) 

Charlock --> Sinapis (Cruciferae) 

Chatterbox --> Epipactis (Orchidaceae) 

Cheat grass --> Bromus (Gramineae) 

Checker lily --> Fritillaria (Liliaceae) 

Checkerbloom --> Sidalcea (Malvaceae) 

Cheeseweed --> Malva (Malvaceae) 

Cherry --> Prunus (Rosaceae) 

Cherry-laurel --> Prunus (Rosaceae) 

Chess --> Bromus (Gramineae) 

Chestnut --> Castanea (Fagaceae) 

Chia --> Salvia (Labiatae) 

Chickweed --> Cerastium (Caryophyllaceae) 

Chickweed --> Holosteum (Caryophyllaceae) 

Chickweed --> Stellaria (Caryophyllaceae) 

Chicory --> Cichorium (Compositae) 

Childing pink --> Petrorhagia (Caryophyllaceae) 

China berry --> Melia (Meliaceae) 

Chinese caps --> Euphorbia (Euphorbiaceae) 

Chinese houses --> Collinsia (Scrophulariaceae) 

Chinese sumac tree --> Ailanthus (Simaroubaceae) 

Chinook-licorice --> Lupinus (Leguminosae) 

Chinquapin --> Chrysolepis (Fagaceae) 

Chocolate lily --> Fritillaria (Liliaceae) 

Choke cherry --> Prunus (Rosaceae) 

Chorizanthe --> Chorizanthe (Polygonaceae) 

Christmas berry --> Heteromeles (Rosaceae) 

Chrysanthemum --> Glebionis (Compositae) 

Chu-chu-pate --> Lomatium (Umbelliferae) 

Chufa --> Cyperus (Cyperaceae) 

Cinquefoil --> Drymocallis (Rosaceae) 

Cinquefoil --> Potentilla (Rosaceae) 

Clammy weed --> Polanisia (Cruciferae) 

Cleavers --> Galium (Rubiaceae) 

Clematis --> Clematis (Ranunculaceae) 

Cliff brake fern --> Pellaea (Pteridaceae) 

Cliff maids --> Lewisia (Portulacaceae) 

Clintonia --> Clintonia (Liliaceae) 

Clocks --> Erodium (Geraniaceae) 

Clotbur --> Xanthium (Compositae) 

Clover --> Trifolium (Leguminosae) 

Club-moss --> Lycopodium (Lycopodiaceae) 

Club-rush --> Schoenoplectus (Cyperaceae) 

Cluster-lily --> Brodiaea (Liliaceae) 

Coast[-al] redwood --> Sequoia (Cupressaceae) 

Cobra-lily --> Darlingtonia (Sarraceniaceae) 

Cochlearia --> Cochlearia (Cruciferae) 

Cocklebur --> Xanthium (Compositae) 

Cockspur --> Echinochloa (Gramineae) 

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Coffee berry --> Frangula (Rhamnaceae) 

Coffee fern --> Pellaea (Pteridaceae) 

Cola de mico --> Heliotropium (Boraginaceae) 

Colchita --> Lotus (Leguminosae) 

Collomia --> Collomia (Polemoniaceae) 

Coltsfoot --> Petasites (Compositae) 

Columbine --> Aquilegia (Ranunculaceae) 

Comfrey --> Symphytum (Boraginaceae) 

Common reed grass --> Phragmites (Gramineae) 

Coneflower --> Rudbeckia (Compositae) 

Coolwort --> Tiarella (Saxifragaceae) 

Coontail --> Ceratophyllum (Ceratophyllaceae) 

Coral root --> Corallorhiza (Orchidaceae) 

Cordgrass --> Spartina (Gramineae) 

Coreopsis --> Coreopsis (Compositae) 

Corethrogyne --> Coreothrogyne (Compositae) 

Coriander --> Coriandrum (Umbelliferae) 

Cornflag --> Chasmanthe (Iridaceae) 

Corn chrysanthemum --> Glebionis (Compositae) 

Corn cockle --> Agrostemma (Caryophyllaceae) 

Corn daisy --> Glebionis (Compositae) 

Corn flower --> Centaurea (Compositae) 

Corn-lily --> Ixia (Iridaceae) 

Corn lily --> Veratrum (Liliaceae) 

Corn-marigold --> Glebionis (Compositae) 

Corn salad --> Valerianella (Valerianaceae) 

Corn spurry --> Spergula (Caryophyllaceae) 

Costmary --> Tanacetum (Compositae) 

Cotoneaster --> Cotoneaster (Rosaceae) 

Cotton batting plant Pseudognaphalium (Compositae) 

Cotton-grass --> Eriophorum (Cyperaceae) 

Cotton-rose --> Filago (Compositae) 

Cotton-rose --> Logfia (Compositae) 

Cotton-sedge --> Eriophorum (Cyperaceae) 

Cotton weed --> Micropus (Compositae) 

Cotton weed --> Stylocline (Compositae) 

Cotton weed --> Epilobium (Onagraceae) 

Cottonwood --> Populus (Salicaceae) 

Cow cockle --> Vaccaria (Caryophyllaceae) 

Cow cress --> Lepidium (Cruciferae) 

Cow herb --> Vaccaria (Caryophyllaceae) 

Cow-parsnip --> Heracleum (Umbelliferae) 

Cowbane --> Oxypolis (Umbelliferae) 

Cowberry --> Potentilla (Rosaceae) 

Coyote brush --> Baccharis (Compositae) 

Coyote mint --> Monardella (Labiatae) 

Coyote-thistle --> Eryngium (Umbelliferae) 

Crab grass --> Digitaria (Gramineae) 

Crassula --> Crassula (Crassulaceae) 

Cream bush --> Holodiscus (Rosaceae) 

Cream cup --> Platystemon (Papaveraceae) 

Cream sacs --> Castilleja (Orobanchaceae) 

Creek fringe --> Epilobium (Onagraceae) 

Creeping charlie --> Glechoma (Labiatae) 

Creeping jenny --> Lysimachia (Primulaceae) 

Crested wheat grass --> Agropyron (Gramineae) 

Cretan weed --> Hedypnois (Compositae) 

Crosswort --> Crucianella (Rubiaceae) 

Crowberry --> Empetrum (Ericaceae) 

Crowfoot --> Ranunculus (Ranunculaceae) 

Crown daisy --> Glebionis (Compositae) 

Crypsis --> Crypsis (Gramineae) 

Cryptantha --> Cryptantha (Boraginaceae) 

Cudweed --> Euchiton (Compositae) 

Cudweed --> Gamochaeta (Compositae)

Cudweed --> Gnaphalium (Compositae) 

Cudweed --> Pseudognaphalium (Compositae) 

Currant --> Ribes (Grossulariaceae) 

Daffodil --> Narcissus (Iridaceae) 

Dagger pod --> Phoenicaulis (Cruciferae) 

Daisy --> Erigeron (Compositae) 

Dallis grass --> Paspalum (Gramineae) 

Dame's rocket --> Hesperis (Cruciferae) 

Dandelion --> Taraxacum (Compositae) 

Darlingtonia --> Darlingtonia (Sarraceniaceae) 

Darnel --> Lolium (Gramineae) 

Datura --> Datura (Solanaceae) 

Dead-nettle --> Lamium (Labiatae) 

Death-camas --> Zigadenus (Liliaceae) 

Deer brush --> Ceanothus (Rhamnaceae) 

Deer fern --> Blechnum (Blechnaceae) 

Deer foot --> Achlys (Berberidaceae) 

Deer grass --> Muhlenbergia (Gramineae) 

Deer-potato --> Triteleia (Liliaceae) 

Deer tongue --> Swertia (Gentianaceae) 

Deer weed --> Lotus (Leguminosae) 

Deer’s ears --> Swertia (Gentianaceae) 

Deptford pink --> Dianthus (Caryophyllaceae) 

Desert mustard --> Sisymbrium (Cruciferae) 

Desert-parsley --> Lomatium (Umbelliferae) 

Devil's claw --> Proboscidea (Martyniaceae) 

Devil’s-lettuce --> Amsinckia (Boraginaceae) 

Dew cup --> Alchemilla (Rosaceae) 

Dichondra --> Dichondra (Convolvulaceae) 

Dill --> Anethum (Umbelliferae) 

Distaff thistle --> Carthamus (Compositae) 

Ditch-grass --> Ruppia (Ruppiaceae) 

Dobie pod --> Tropidocarpum (Cruciferae) 

Dock --> Rumex (Polygonaceae) 

Dodder --> Cuscuta (Convolvulaceae) 

dog berry --> Cornus (Cornaceae) 

Dog-fennel --> Anthemis (Compositae) 

Dog-fennel --> Chamaemulum (Compositae) 

Dogbane --> Apocynum (Apocynaceae) 

Dogtail --> Cynosurus (Gramineae) 

Dogtooth-violet --> Erythronium (Liliaceae) 

Dogwood --> Cornus (Cornaceae) 

Doll’s-lily --> Odontostomum (Tecophilaeaceae) 

Douglas-fir --> Pseudotsuga (Pinaceae) 

Douglas-spruce --> Pseudotsuga (Pinaceae) 

Dove weed --> Croton (Euphorbiaceae) 

Downingia --> Downingia (Campanulaceae) 

Draba --> Draba (Cruciferae) 

Dropseed --> Sporobolus (Gramineae) 

Drops-of-gold --> Prosartes (Liliaceae) 

Duck-meal --> Landoltia (Araceae) 

Duckweed --> Lemna (Araceae) 

Duckweed fern --> Azolla (Azollaceae) 

Dudleya --> Dudleya (Crassulaceae) 

Dune grass --> Elymus (Gramineae) 

Durango root --> Datisca (Datiscaceae) 

Dutchman's pipe --> Aristolochia (Aristolochiaceae) 

Dwarf mistletoe --> Arceuthobium (Santalaceae) 

Dwarf-flax --> Hesperolinon (Linaceae) 

Dwarf rush --> Juncus (Juncaceae) 

Dwarf-sage --> Scutellaria (Labiatae) 

Dwarf-sunflower --> Helianthella (Compositae) 

Dyer's rocket --> Reseda (Resedaceae) 

Dyer's woad --> Isatis (Cruciferae) 

-128- 

Eel-grass --> Zostera (Zosteraceae) 

Elder --> Sambucus (Adoxaceae) 

Elderberry --> Sambucus (Adoxaceae) 

Elecampane --> Inula (Compositae) 

Elephant's head --> Pedicularis (Orobanchaceae) 

Elk-clover --> Aralia (Araliaceae) 

Elk-grass --> Xerophyllum (Liliaceae) 

Elodea --> Elodea (Hydrocharitaceae) 

Empress tree --> Paulownia (Paulowniaceae) 

Enchanter's-nightshade --> Circaea (Onagraceae) 

English daisy --> Bellis (Compositae) 

English ivy --> Hedera (Araliaceae) 

English-laurel --> Prunus (Rosaceae) 

Eriastrum --> Eriastrum (Polemoniaceae) 

Eryngo --> Eryngium (Umbelliferae) 

Eschscholzia --> Eschscholzia (Papaveraceae) 

Eupatorium --> Eupatorium (Compositae) 

Evening snow --> Linanthus (Polemoniaceae) 

Evening-primrose --> Oenothera (Onagraceae) 

Everlasting --> Gamochaeta (Compositae) 

Eyebane --> Chamaesyce (Euphorbiaceae) 

Eyelash weed --> Blepharipappus (Compositae) 

Fairy bells --> Prosartes (Liliaceae) 

Fairy lantern --> Calochortus (Liliaceae) 

Fairy lantern --> Prosartes (Liliaceae) 

False agoseris --> Nothocalais (Compositae) 

False asphodel --> Triantha (Liliaceae) 

False brome --> Brachypodium (Gramineae) 

False buckwheat --> Eriogonum (Polygonaceae) 

False bugbane --> Trautvetteria (Ranunculaceae) 

False chamomile --> Tripleurospermum (Compositae) 

False flax --> Camelina (Cruciferae) 

False gilia --> Allophyllum (Polemoniaceae) 

False golden-aster --> Heterotheca (Compositae) 

False ground-cherry --> Leucophysalis (Solanaceae) 

False hellebore --> Veratrum (Liliaceae) 

False lily-of-the-valley -->Maianthemum (Asphodelaceae) 

False lupine --> Thermopsis (Leguminosae) 

False mayweed --> Tripleurospermum (Compositae) 

False mermaid --> Floerkea (Limnanthaceae) 

False mule’s ear --> Agnorhiza (Compositae) 

False onion --> Nothoscordum (Liliaceae) 

False Solomon's-seal --> Maianthemum (Liliaceae) 

False spirea [-aea] --> Sorbaria (Rosaceae) 

False Venus’ looking glass -->Legenere (Campanulaceae) 

Fanfoil --> Potentilla (Rosaceae) 

Fanwort --> Cabomba (Cabombaceae) 

Farewell-to-spring --> Clarkia (Onagraceae) 

Fat-hen --> Atriplex (Amaranthaceae) 

Father-and-child plant --> Euchiton (Compositae) 

Fawn lily --> Erythronium (Liliaceae) 

Feather-geranium --> Chenopodium (Amaranthaceae) 

Feather weed --> Gamochaeta (Compositae) 

Fennel --> Foeniculum (Umbelliferae) 

Fenugreek --> Trigonella (Leguminosae) 

Fescue --> Festuca (Gramineae) 

Fiddle leaf --> Nama (Boraginaceae) 

Fiddle neck --> Phacelia (Boraginaceae) 

Fiddleneck --> Amsinckia (Boraginaceae) 

Fiddleneck --> Phacelia (Boraginaceae) 

Fiesta flower --> Pholistoma (Boraginaceae) 

Fig --> Ficus (Moraceae) 

Figwort --> Scrophularia (Scrophulariaceae)

Filago --> Filago (Compositae) 

Filago --> Logfia (Compositae) 

Filaree --> Erodium (Geraniaceae) 

Finger grass --> Chloris (Gramineae) 

Fir --> Abies (Pinaceae) 

Firecracker flower Dichelostemma (Asphodelaceae) 

Firecracker plant --> Dichelostemma (Asphodelaceae) 

Fire lily --> Xerophyllum (Melanthiaceae) 

Fireweed --> Amsinckia (Boraginaceae) 

Fireweed --> Epilobium (Onagraceae) 

Fireweed --> Chamerion (Onagraceae) 

Fireweed --> Erechtites (Compositae) 

Fish-grass --> Cabomba (Nymphaeaceae) 

Five-finger fern --> Adiantum (Pteridaceae) 

Flannelbush --> Fremontodendron (Malvaceae) 

Flat pod --> Idahoa (Cruciferae) 

Flat-tops --> Eriogonum (Polygonaceae) 

Flatsedge --> Cyperus (Cyperaceae) 

Flax --> Linum (Linaceae) 

Flax flower --> Linanthus (Polemoniaceae) 

Flix weed --> Descurainia (Cruciferae) 

Flower-of-an-hour --> Hibiscus (Malvaceae) 

Flowering quillwort --> Lilaea (Hydrocharitaceae) 

Fluellin --> Kickxia (Scrophulariaceae) 

Foam flower --> Tiarella (Saxifragaceae) 

Foetid adder's-tongue --> Scoliopus (Liliaceae) 

Footstep's-of-spring --> Sanicula (Umbelliferae) 

Forget-me-not --> Myosotis (Boraginaceae) 

Forsellesia --> Forsellesia (Crossosomataceae) 

Four-o'clock --> Mirabilis (Nyctaginaceae) 

Foxglove --> Digitalis (Scrophulariaceae) 

Foxtail --> Alopecurus (Gramineae) 

Foxtail --> Setaria (Gramineae) 

Fragile fern --> Cystopteris (Dryopteridaceae) 

Fremontia --> Fremontodendron (Malvaceae) 

Fringe cup --> Lithophragma (Saxifragaceae) 

Fringe cup[s] --> Tellima (Saxifragaceae) 

Fringe pod --> Thysanocarpus (Cruciferae) 

Fritillary --> Fritillaria (Liliaceae) 

Frogbit --> Limnobium (Hydrocharitaceae) 

Fuchsia --> Epilobium (Onagraceae) 

Fuchsia --> Fuchsia (Onagraceae) 

Fumitory --> Fumaria (Papaveraceae) 

Furze --> Ulex (Leguminosae) 

Garden rocket --> Eruca (Cruciferae) 

Garlic --> Allium (Liliaceae) 

Gentian --> Gentiana (Gentianaceae) 

Gentian --> Gentianella (Gentianaceae) 

Geranium --> Geranium (Geraniaceae) 

Germander Teucrium (Labiatae) 

German-ivy --> Senecio (Compositae) 

Giant helleborine --> Epipactis (Orchidaceae) 

Giant reed grass --> Arundo (Gramineae) 

Giant sequoia --> Sequoiadendron (Cupressaceae) 

Gilia --> Aliciella (Polemoniaceae) 

Gilia --> Allophyllum (Polemoniaceae) 

Gilia --> Gilia (Polemoniaceae) 

Gill-over-the-ground --> Glechoma (Labiatae) 

Gily-flower --> Allophyllum (Polemoniaceae) 

Giraffe head --> Lamium (Labiatae) 

Glacier lily --> Erythronium (Liliaceae) 

Glasswort --> Salicornia (Amaranthaceae) 

Glasswort --> Sarcocornia (Amaranthaceae) 

Glehnia --> Glehnia (Umbelliferae) 

-129- 

Globe lily --> Calochortus (Liliaceae) 

Globe mallow --> Iliamna (Malvaceae) 

Goat's beard --> Aruncus (Rosaceae) 

Goat's beard --> Tragopogon (Compositae) 

Goatgrass --> Triticum (Gramineae) 

Goathead --> Tribulus (Zygophyllaceae) 

Godetia --> Clarkia (Onagraceae) 

Goldback fern --> Pentagramma (Pteridaceae) 

Golden-aster --> Heterotheca (Compositae) 

Golden-banner --> Thermopsis (Leguminosae) 

Goldenbush --> Ericameria (Compositae) 

Golden ear-drops --> Ehrendorferia (Papaveraceae) 

Golden fleece --> Ericameria (Compositae) 

Golden lily bells --> Calochortus (Liliaceae) 

Golden saxifrage --> Chrysosplenium (Saxifragaceae) 

Golden weed --> Pyrrocoma (Compositae) 

Golden-aster --> Heterotheca (Compositae) 

Golden eggs --> Camissonia (Onagraceae) 

Goldenrod --> Solidago (Compositae) 

Golden thread --> Cuscuta (Convolvulaceae) 

Golden weed --> Pyrrocoma (Compositae) 

Golden-eyed-grass --> Sisyrinchium (Iridaceae) 

Goldfields --> Lasthenia (Compositae) 

Goldflower --> Hymenoxys (Compositae) 

Goldthread --> Coptis (Ranunculaceae) 

Gold-wire --> Hypericum (Guttiferae) 

Gooseberry --> Ribes (Grossulariaceae) 

Goosefoot --> Chenopodium (Amaranthaceae) 

Goosefoot --> Dysphania (Amaranthaceae) 

Goose-grass --> Galium (Rubiaceae) 

Goose grass --> Eleusine (Gramineae) 

Gorse --> Ulex (Leguminosae) 

Grape --> Vitis (Vitaceae) 

Grape fern --> Botrychium (Ophioglossaceae) 

Grass --> Cannabis (Cannabaceae) 

Grass nut --> Triteleia (Liliaceae) 

Grass-of-Parnassus --> Parnassia (Parnassiaceae) 

Grass pink --> Petrorhagia (Caryophyllaceae) 

Grass poly --> Lythrum (Lythraceae) 

Grass widows --> Olsynium (Iridaceae) 

Grass-wrack --> Zannichellia (Potamogetonaceae) 

Greasewood --> Adenostoma (Rosaceae) 

Green everlasting --> Gnaphalium (Compositae) 

Green gentian --> Swertia (Gentianaceae) 

Green mint --> Monardella (Labiatae) 

Greenbriar [-ier] --> Smilax (Smilacaceae) 

Grindelia --> Grindelia (Compositae) 

Gromwell --> Lithospermum (Boraginaceae) 

Ground cone --> Boschniakia (Orobanchaceae) 

Ground-cherry --> Physalis (Solanaceae) 

Ground-ivy --> Glechoma (Labiatae) 

Ground-pine --> Lycopodium (Lycopodiaceae) 

Groundsel --> Senecio (Compositae) 

Groundsel --> Solidago (Compositae) 

Groundsel --> Packera (Compositae) 

Groundsmoke --> Gayophytum (Onagaraceae) 

Grouseberry --> Vaccinium (Ericaceae) 

Gum plant --> Grindelia (Compositae) 

Gum weed --> Grindelia (Compositae) 

Hair grass --> Aira (Gramineae) 

Hair grass --> Deschampsia (Gramineae) 

Hair sedge --> Bulbostylis (Cyperaceae) 

Hairy-danthonia --> Rytidosperma (Gramineae) 

Haplopappus --> Ericameria (Compositae)

Haplopappus --> Haplopappus (Compositae) 

Haplopappus --> Hazardia (Compositae) 

Hard fern --> Blechnum (Blechnaceae) 

Hard grass --> Sclerochloa (Gramineae) 

Hard grass --> Aegilops (Gramineae) 

Hard-tack --> Cercocarpus (Rosaceae) 

Harding grass --> Phalaris (Gramineae) 

Harebell --> Campanula (Campanulaceae) 

Hareleaf --> Lagophylla (Compositae) 

Hare’s tail grass --> Lagurus (Gramineae) 

Harlequin flower --> Sparaxis (Iridaceae) 

Hawkbit --> Leontodon (Compositae) 

Hawksbeard --> Crepis (Compositae) 

Hawkweed --> Hieracium (Compositae) 

Hawthorn --> Crataegus (Rosaceae) 

Hazel --> Corylus (Betulaceae) 

Hazelnut --> Corylus (Betulaceae) 

Heal-all --> Prunella (Labiatae) 

Heath --> Erica (Ericaceae) 

Heather --> Phyllodoce (Ericaceae) 

Heath grass --> Sieglingia (Gramineae) 

Hebe --> Veronica (Scrophulariaceae) 

Hedge mustard --> Sisymbrium (Cruciferae) 

Hedge-hyssop --> Gratiola (Scrophulariaceae) 

Hedge-nettle --> Stachys (Labiatae) 

Hedge-parsley --> Torilis (Umbelliferae) 

Helianthella --> Helianthella (Compositae) 

Heliotrope --> Heliotropium (Boraginaceae) 

Helleborine --> Epipactis (Orchidaceae) 

Hemicarpha --> Hemicarpha (Cyperaceae) 

Hemlock --> Tsuga (Pinaceae) 

Henbit --> Lamium (Labiatae) 

Herba impia --> Filago (Compositae) 

Herb-of-the-cross --> Verbena (Verbenaceae) 

Herb robert --> Geranium (Geraniaceae) 

High mallow --> Malvella (Malvaceae) 

Hill star --> Lithophragma (Saxifragaceae) 

Himalaya berry --> Rubus (Rosaceae) 

Hoary-aster --> Dieteria (Compositae) 

Hoary cress --> Cardaria (Cruciferae) 

Hoary mustard --> Hirschfeldia (Cruciferae) 

Hog-fennel --> Lomatium (Umbelliferae) 

Hogweed --> Portulaca (Portulacaceae) 

Holly --> Ilex (Aquifoliaceae) 

Holly fern --> Polystichum (Dryopteridaceae) 

Honesty --> Lunaria (Cruciferae) 

Honey bush --> Melianthus (Melianthaceae) 

Honey-dew --> Horkelia (Rosaceae) 

Honeysuckle --> Lonicera (Caprifoliaceae) 

Hop tree --> Ptelea (Rutaceae) 

Hops --> Humulus (Cannabaceae) 

Horehound --> Lycopus (Labiatae) 

Horehound --> Marrubium (Labiatae) 

Horkelia --> Horkelia (Rosaceae) 

Horned pondweed --> Zannichellia (Potamogetonaceae) 

Hornwort --> Ceratophyllum (Ceratophyllaceae) 

Horse-chestnut --> Aesculus (Sapindaceae) 

Horse-nettle --> Solanum (Solanaceae) 

Horsebrush --> Tetradymia (Compositae) 

Horsemint --> Agastache (Labiatae) 

Horseradish --> Armoracia (Cruciferae) 

Horsetail --> Equisetum (Equisetaceae) 

Horseweed --> Conyza (Compositae) 

Hottentot-fig --> Carpobrotus (Aizoaceae) 

Hound's tongue --> Cynoglossum (Boraginaceae) 

-130- 

Huckleberry --> Vaccinium (Ericaceae) 

Hulsea --> Hulsea (Compositae) 

Humingbird trumpet --> Epilobium (Onagraceae) 

Hunger weed --> Ranunculus (Ranunculaceae) 

Husk-tomato --> Physalis (Solanaceae) 

Hutchinsia --> Hymenolobus (Cruciferae) 

Hydrilla --> Hydrilla (Hydrocharitaceae) 

Iceplant --> Mesembryanthemum (Aizoaceae) 

Incense-cedar --> Calocedrus (Pinaceae) 

Indian arrowhead --> Philadelphus (Hydrangeaceae) 

Indian basket-grass --> Xerophyllum (Liliaceae) 

Indian bean --> Catalpa (Bignoniaceae) 

Indian biscuit --> Lomatium (Umbelliferae) 

Indian breadroot --> Pediomelum (Leguminosae) 

Indian-chickweed --> Mollugo (Molluginaceae) 

Indian headdress --> Tracyina (Compositae) 

Indian-hemp --> Apocynum (Apocynaceae) 

Indian pink --> Silene (Caryophyllaceae) 

Indian pipe --> Monotropa (Ericaceae) 

Indian poke --> Veratrum (Melanthiaceae) 

Indian-potato --> Trientalis (Primulaceae) 

Indian-rhubarb --> Darmera (Saxifragaceae) 

Indian warrior --> Pedicularis (Orobanchaceae) 

Indian's dream --> Aspidotis (Pteridaceae) 

Innocence --> Collinsia (Scrophulariaceae) 

Inside-out flower --> Vancouveria (Berberidaceae) 

Iris --> Iris (Iridaceae) 

Ithuriel's spear --> Triteleia (Liliaceae) 

Ivesia --> Ivesia (Rosaceae) 

Jack-of-the-rocks --> Heuchera (Saxifragaceae) 

Jerusalem-oak --> Chenopodium (Amaranthaceae) 

Jessamine --> Cestrum (Solanaceae) 

Jewel flower --> Streptanthus (Cruciferae) 

Jewel weed --> Impatiens (Balsaminaceae) 

Jim brush --> Ceanothus (Rhamnaceae) 

Jimson weed --> Datura (Solanaceae) 

Johnson grass --> Sorghum (Gramineae) 

Jubata grass --> Cortaderia (Gramineae) 

Judas tree --> Cercis (Leguminosae) 

Jungle-rice Echinochloa (Gramineae) 

June grass --> Koeleria (Gramineae) 

Juniper --> Juniperus (Cupressaceae) 

Jupiter's beard --> Centranthus (Valerianaceae) 

Kalmia --> Kalmia (Ericaceae) 

Kangaroo-apple --> Solanum (Solanaceae) 

Kelloggia --> Kelloggia (Rubiaceae) 

Kenilworth-ivy --> Cymbalaria (Scrophulariaceae) 

Kinnikinnick --> Arctostaphylos (Ericaceae) 

Klamath weed --> Hypericum (Guttiferae) 

Knapweed --> Centaurea (Compositae) 

Knawel --> Scleranthus (Caryophyllaceae) 

Knot grass --> Paspalum (Gramineae) 

Knot-grass --> Scleranthus (Caryophyllaceae) 

Knot weed --> Polygonum (Polygonaceae) 

Kotolo --> Asclepias (Apocynaceae) 

Labrador-tea --> Ledum (Ericaceae) 

Lace fern --> Aspidotis (Pteridaceae) 

Lace flower --> Tiarella (Saxifragaceae) 

Lace pod --> Thysanocarpus (Cruciferae) 

Ladies-tobacco --> Pseudognaphalium (Compositae) 

Lady fern --> Athyrium (Dryopteridaceae)

Lady's comb --> Scandix (Umbelliferae) 

Lady's mantle --> Alchemilla (Rosaceae) 

Lady's thumb --> Polygonum (Polygonaceae) 

Lady's-slipper orchid --> Cypripedium (Orchidaceae) 

Lady's-tresses --> Spiranthes (Orchidaceae) 

Lamb's-lettuce --> Valerianella (Valerianaceae) 

Lamb's-quarters --> Chenopodium (Amaranthaceae) 

Larkspur --> Delphinium (Ranunculaceae) 

Lasthenia --> Lasthenia (Compositae) 

Lateral bulrush --> Isolepis (Cyperaceae) 

Laurel --> Laurus (Lauraceae) 

Laurustinus --> Viburnum (Adoxaceae) 

Layia --> Layia (Compositae) 

Leather root --> Psoralea (Leguminosae) 

Leek --> Allium (Liliaceae) 

Leopard bane --> Arnica (Compositae) 

Lesquerella --> Lesquerella (Cruciferae) 

Lessingia --> Lessingia (Compositae) 

Lettuce --> Lactuca (Compositae) 

Lewisia --> Lewisia (Portulacaceae) 

Licorice --> Glycyrrhiza (Leguminosae) 

Licorice fern --> Polypodium (Polypodiaceae) 

Licorice plant --> Helichrysum (Compositae) 

Ligusticum --> Ligusticum (Umbelliferae) 

Lily --> Lilium (Liliaceae) 

Lily-of-the-valley vine --> Salpichroa (Solanaceae) 

Linanthus --> Leptosiphon (Polemoniaceae) 

Linanthus --> Linanthus (Polemoniaceae) 

Lindernia --> Lindernia (Scrophulariaceae) 

Lip fern --> Cheilanthes (Pteridaceae) 

Liver berry --> Streptopus (Liliaceae) 

Lizard tail --> Eriophyllum (Compositae) 

Loco --> Astragalus (Leguminosae) 

Locoweed --> Astragalus (Leguminosae) 

Locoweed --> Datura (Solanaceae) 

Loeflingia --> Loeflingia (Caryophyllaceae) 

Loma prieta --> Hoita (Leguminosae) 

Lomatium --> Lomatium (Umbelliferae) 

London rocket --> Sisymbrium (Cruciferae) 

Long-tailed-ginger --> Asarum (Aristolochiaceae) 

Loosestrife --> Lysimachia (Myrsinaceae) 

Loosestrife --> Lythrum (Lythraceae) 

Lotus --> Lotus (Leguminosae) 

Lousewort --> Pedicularis (Orobanchaceae) 

Lovage --> Ligusticum (Umbelliferae) 

Love grass --> Eragrostis (Gramineae) 

Lucerne --> Medicago (Leguminosae) 

Luina --> Luina (Compositae) 

Lungwort --> Mertensia (Boraginaceae) 

Lupine --> Lupinus (Leguminosae) 

Macronema --> Ericameria (Compositae) 

Madrona --> Arbutus (Ericaceae) 

Madrone --> Arbutus (Ericaceae) 

Madroño --> Arbutus (Ericaceae) 

Mahala mats --> Ceanothus (Rhamnaceae) 

Mahonia --> Berberis (Berberidaceae) 

Maidenhair fern --> Adiantum (Pteridaceae) 

Maiden’s tears --> Silene (Caryophyllaceae) 

Malacothrix --> Malacothrix (Compositae) 

Mallow --> Lavatera (Malvaceae) 

Mallow --> Malva (Malvaceae) 

Manna grass --> Glyceria (Gramineae) 

Manroot --> Marah (Cucurbitaceae) 

Manzanita --> Arctostaphylos (Ericaceae) 

-131- 

Maple --> Acer (Sapindaceae) 

Maram --> Ammophila (Gramineae) 

Mare's tail --> Hippuris (Hippuridaceae) 

Marigold --> Tagetes (Compositae) 

Marijuana --> Cannabis (Cannabaceae) 

Mariposa --> Calochortus (Liliaceae) 

Mariposa lily --> Calochortus (Liliaceae) 

Marsh-marigold --> Caltha (Ranunculaceae) 

Marsh-parsley --> Ciclospermum (Umbelliferae) 

Marsh-pennywort --> Hydrocotyle (Umbelliferae) 

Marsh-purslane --> Ludwigia (Onagraceae) 

Marsh-rosemary --> Limonium (Plumbaginaceae) 

Mat-grass --> Phyla (Verbenaceae) 

Matrimony vine --> Lycium (Solanaceae) 

May weed --> Anthemis (Compositae) 

Meadow foam --> Limnanthes (Limnanthaceae) 

Meadow-rue --> Thalictrum (Ranunculaceae) 

Meadow salsify --> Tragopogon (Compositae) 

Meadow sweet --> Spiraea (Rosaceae) 

Meconella --> Meconella (Papaveraceae) 

Medick --> Medicago (Leguminosae) 

Medusa head --> Elymus (Gramineae) 

Melic --> Melica (Gramineae) 

Menziesia --> Menziesia (Ericaceae) 

Merlin-grass --> Isoëtes (Isoëtaceae) 

Merriam grass --> Elymus (Gramineae) 

Mexican balsamea --> Epilobium (Onagraceae) 

Mexican tea --> Dysphania (Amaranthaceae) 

Michaelmas daisy --> Symphyotrichum (Compositae) 

Microcala --> Microcala (Gentianaceae) 

Microseris --> Microseris (Compositae) 

Mignonette --> Reseda (Resedaceae) 

Milfoil --> Achillea (Compositae) 

Milfoil --> Myriophyllum (Haloragaceae) 

Milk maids --> Cardamine (Cruciferae) 

Milk thistle --> Silybum (Compositae) 

Milkvetch --> Astragalus (Leguminosae) 

Milkweed --> Asclepias (Apocynaceae) 

Milkwort --> Polygala (Polygalaceae) 

Miner's pepper --> Lepidium (Cruciferae) 

Miner's lettuce --> Claytonia (Portulacaceae) 

Mint --> Mentha (Labiatae) 

Mission bells --> Fritillaria (Liliaceae) 

Mistletoe --> Phoradendron (Santalaceae) 

Mitrewort --> Mitella (Saxifragaceae) 

Mock orange --> Philadelphus (Hydrangeaceae) 

Mock orange --> Pittosporum (Pittosporaceae) 

Mock parsley --> Apiastrum (Umbelliferae) 

Money plant --> Lunaria (Cruciferae) 

Monkey fiddle --> Hesperochiron (Hydrophyllaceae) 

Monkey flower --> Mimulus (Phrymaceae) 

Monkshood --> Aconitum (Ranunculaceae) 

Montbretia --> Crocosmia (Iridaceae) 

Montia --> Claytonia (Portulacaceae) 

Montia --> Montia (Portulacaceae) 

Monument plant --> Swertia (Gentianaceae) 

Moonwort --> Botrychium (Ophioglossaceae) 

Morning-glory --> Calystegia (Convolvulaceae) 

Morning-glory --> Convolvulus (Convolvulaceae) 

Mosquito bills --> Dodecatheon (Primulaceae) 

Mosquito fern --> Azolla (Azollaceae) 

Mother-of-thousands --> Tolmiea (Saxifragaceae) 

Mountain lover --> Paxistima (Celastraceae) 

Mountain balm --> Monardella (Labiatae) 

Mountain mint --> Monardella (Labiatae)

Mountain pride --> Penstemon (Scrophulariaceae) 

Mountain-ash --> Sorbus (Rosaceae) 

Mountain-balm --> Eriodictyon (Boraginaceae) 

Mountain-dandelion --> Agoseris (Compositae) 

Mountain-grape --> Berberis (Berberidaceae) 

Mountain-heather --> Cassiope (Ericaceae) 

Mountain-heather --> Chimaphila (Ericaceae) 

Mountain-heliotrope --> Valeriana (Valerianaceae) 

Mountain-hemp --> Apocynum (Apocynaceae) 

Mountain-mahogany --> Cercocarpus (Rosaceae) 

Mountain-sorrel --> Oxyria (Polygonaceae) 

Mourning bride --> Scabiosa (Dipsacaceae) 

Mouse ear --> Arabidopsis (Cruciferae) 

Mouse-ears --> Mimulus (Phrymaceae) 

Mousetail --> Myosurus (Ranunculaceae) 

Mud-midget --> Wolffia (Araceae) 

Mud-plantain --> Heteranthera (Pontederiaceae) 

Mugwort --> Artemisia (Compositae) 

Muhly --> Muhlenbergia (Gramineae) 

Muilla --> Muilla (Liliaceae) 

Mule ears --> Wyethia (Compositae) 

Mule fat --> Baccharis (Compositae) 

Mullein --> Verbascum (Scrophulariaceae) 

Mullein pink --> Lychnis (Caryophyllaceae) 

Musk bush --> Ceanothus (Rhamnaceae) 

Musk-clover --> Erodium (Geraniaceae) 

Musk flower --> Mimulus (Phrymaceae) 

Mustard --> Brassica (Cruciferae) 

Mustard --> Descurainia (Cruciferae) 

Muster-John-Henry --> Tagetes (Compositae) 

Myrtlewood --> Umbellularia (Lauraceae) 

Naiad --> Najas (Hydrocharitaceae) 

Naked lady --> Amaryllis (Liliaceae) 

Narcissus --> Narcissus (Iridaceae) 

Nasturtium --> Tropaeolum (Tropaeolaceae) 

Natal grass --> Melinis (Gramineae) 

Navarretia --> Navarretia (Polemoniaceae) 

Nemacladus --> Nemacladus (Campanulaceae) 

Nemophila --> Nemophila (Boraginaceae) 

Nest straw --> Stylocline (Compositae) 

Nettle --> Urtica (Urticaceae) 

New Zealand-spinach --> Tetragonia (Aizoaceae) 

Nightshade --> Solanum (Solanaceae) 

Nine fingers --> Lupinus (Leguminosae) 

Ninebark --> Physocarpus (Rosaceae) 

Nipplewort --> Lapsana (Compositae) 

Nit grass --> Gastridium (Gramineae) 

North Africa grass --> Ventenata (Gramineae) 

Nutgrass --> Cyperus (Cyperaceae) 

Nutsedge --> Cyperus (Cyperaceae) 

Oak --> Quercus (Fagaceae) 

Oat grass --> Arrhenatherum (Gramineae) 

Oat grass --> Danthonia (Gramineae) 

Oat --> Avena (Gramineae) 

Ocean spray --> Holodiscus (Rosaceae) 

Oenanthe --> Oenanthe (Umbelliferae) 

Oleander --> Nerium (Apocynaceae) 

Onion --> Allium (Liliaceae) 

Onion grass --> Melica (Gramineae) 

Ookow --> Dichelostemma (Liliaceae) 

Orach [-e] --> Atriplex (Amaranthaceae) 

Oracle --> Atriplex (Amaranthaceae) 

Orchard grass --> Dactylis (Gramineae) 

-132- 

Orcutt grass --> Orcuttia (Gramineae) 

Oregon-grape --> Mahonia (Berberidaceae) 

Oregon-myrtle --> Umbellularia (Lauraceae) 

Oregon tea --> Clinopodium (Labiatae) 

Oregon tea-tree --> Ceanothus (Rhamnaceae) 

Orogenia --> Orogenia (Umbelliferae) 

Orpine --> Sedum (Crassulaceae) 

Oso berry --> Oemleria (Rosaceae) 

Oval purse --> Hornungia (Cruciferae) 

Owl claws --> Dugaldia (Compositae) 

Owl's-clover --> Castilleja (Orobanchaceae) 

Owl's-clover --> Orthocarpus (Orobanchaceae) 

Owl’s-clover --> Triphysaria (Orobanchaceae) 

Ox-eye daisy --> Leucanthemum (Compositae) 

Oxalis --> Oxalis (Oxalidaceae) 

Oxtongue --> Helminthotheca (Compositae) 

Owl’s-claws --> Hymenoxys (Compositae) 

Oyster plant --> Tragopogon (Compositae) 

Pacific oenanthe --> Oenanthe (Umbelliferae) 

Pacific wax-myrtle --> Morella (Myricaceae) 

Paeony --> Paeonia (Paeoniaceae) 

Paintbrush --> Castilleja (Orobanchaceae) 

Palma Christa --> Ricinus (Euphorbiaceae) 

Pampas grass --> Cortaderia (Gramineae) 

Panal --> Cypselea (Aizoaceae) 

Panic grass --> Panicum (Gramineae) 

Pansy --> Viola (Violaceae) 

Parsley --> Lomatium (Umbelliferae) 

Parsley --> Petroselinum (Umbelliferae) 

Parsley fern --> Cryptogramma (Pteridaceae) 

Parsnip --> Pastinaca (Umbelliferae) 

Partridge foot --> Leutkea (Rosaceae) 

Pasque flower --> Anemone (Ranunculaceae) 

Pea --> Lathyrus (Leguminosae) 

Peach --> Prunus (Rosaceae) 

Pearl flower --> Heterocodon (Campanulaceae) 

Pearlwort --> Sagina (Caryophyllaceae) 

Pearly everlasting --> Anaphalis (Compositae) 

Pectocarya --> Pectocarya (Boraginaceae) 

Pellitory --> Parietaria (Urticaceae) 

Penny cress --> Noccaea (Cruciferae) 

Pennyroyal --> Mentha (Labiatae) 

Penstemon --> Penstemon (Scrophulariaceae) 

Peppergrass --> Lepidium (Cruciferae) 

Peppermint --> Mentha (Labiatae) 

Pepperwood --> Umbellularia (Lauraceae) 

Pepperwort --> Lepidium (Cruciferae) 

Periwinkle --> Vinca (Apocynaceae) 

Persian-lilac --> Melia (Meliaceae) 

Persimmon --> Diospyros (Ebenaceae) 

Petunia --> Petunia (Solanaceae) 

Phacelia --> Phacelia (Boraginaceae) 

Phantom orchid --> Cephalanthera (Orchidaceae) 

Phlox --> Phlox (Polemoniaceae) 

Pickle weed --> Salicornia (Amaranthaceae) 

Piggyback plant --> Tolmiea (Saxifragaceae) 

Pigmy cypress --> Cupressus (Cupressaceae) 

Pigmy weed --> Crassula (Crassulaceae) 

Pigweed --> Amaranthus (Amaranthaceae) 

Pigweed --> Chenopodium (Amaranthaceae) 

Pillwort --> Pilularia (Marsileaceae) 

Pimpernel --> Anagallis (Myrsinaceae) 

Pincushion plant --> Navarretia (Polemoniaceae) 

Pine --> Pinus (Pinaceae)

Pineapple weed --> Matricaria (Compositae) 

Pinedrops --> Pterospora (Ericaceae) 

Pinesap --> Pleurocospora (Ericaceae) 

Pine grass --> Calamagrostis (Gramineae) 

Pine mat --> Ceanothus (Rhamnaceae) 

Pine sap --> Monotropa (Ericaceae) 

Pipe vine --> Aristolochia (Aristolochiaceae) 

Pipe-stems --> Clematis (Ranunculaceae) 

Piperia --> Piperia (Orchidaceae) 

Pipsissiwa --> Chimaphila (Ericaceae) 

Pitcher plant --> Darlingtonia (Sarraceniaceae) 

Pitcher-sage --> Lepechinia (Labiatae) 

Pittosporum --> Pittosporum (Pittosporaceae) 

Plane tree --> Platanus (Platanaceae) 

Plantain --> Plantago (Plantaginaceae) 

Plectritis --> Plectritis (Valerianaceae) 

Plum --> Prunus (Rosaceae) 

Plumas bush --> Ceanothus (Rhamnaceae) 

Pogogyne --> Pogogyne (Labiatae) 

Poison-hemlock --> Conium (Umbelliferae) 

Poison-oak --> Toxicodendron (Anacardiaceae) 

Poker plant --> Kniphofia (Liliaceae) 

Pokeweed --> Phytolacca (Phytolaccaceae) 

Polemonium --> Polemonium (Polemoniaceae) 

Polygala --> Polygala (Polygalaceae) 

Polypody fern --> Polypodium (Polypodiaceae) 

Pond-lily --> Nuphar (Nymphaeaceae) 

Pondweed --> Najas (Hydrocharitaceae) 

Pondweed --> Potamogeton (Potamogetonaceae) 

Ponys-foot --> Dichondra (Convolvulaceae) 

Poor man's weather-glass --> Anagallis (Primulaceae) 

Popcorn flower --> Plagiobothrys (Boraginaceae) 

Poplar --> Populus (Salicaceae) 

Poppy --> Papaver (Papaveraceae) 

Port Orford-cedar --> Chamaecyparis (Cupressaceae) 

Possession vine --> Convolvulus (Convolvulaceae) 

Pot --> Cannabis (Cannabaceae) 

Prairie star --> Lithophragma (Saxifragaceae) 

Pretty face --> Triteleia (Liliaceae) 

Prickly broom --> Ulex (Leguminosae) 

Prickly-phlox --> Linanthus (Polemoniaceae) 

Prickly-poppy --> Argemone (Papaveraceae) 

Primrose --> Primula (Primulaceae) 

Primrose-willow --> Ludwigia (Onagraceae) 

Primula --> Primula (Primulaceae) 

Prince's-pine --> Chimaphila (Ericaceae) 

Privet --> Ligustrum (Oleceae) 

Psoralea --> Psoralea (Leguminosae) 

Ptilory --> Stephanomeria (Compositae) 

Puccoon --> Lithospermum (Boraginaceae) 

Puncture vine --> Tribulus (Zygophyllaceae) 

Purple mustard --> Chorispora (Cruciferae) 

Purple-eyed-grass --> Olsynium (Iridaceae) 

Purslane --> Portulaca (Portulacaceae) 

Pusley --> Portulaca (Portulacaceae) 

Pussy ears --> Calochortus (Liliaceae) 

Pussypaws --> Calyptridium (Portulacaceae) 

Pussytoes --> Antennaria (Compositae) 

Pyrrocoma --> Haplopappus (Compositae) 

Pyrrocoma --> Pyrrocoma (Compositae) 

Quaking aspen --> Populus (Salicaceae) 

Quack grass --> Elymus (Gramineae) 

Quaking grass --> Briza (Gramineae) 

Queen Anne's lace --> Daucus (Umbelliferae) 

-133- 

Quillwort --> Isoëtes (Isoëtaceae) 

Rabbit brush --> Chrysothamnus (Compositae) 

Rabbit bush --> Haplopappus (Compositae) 

Rabbitfoot --> Lagophylla (Compositae) 

Rabbitfoot grass --> Polypogon (Gramineae) 

Rabbit-tobacco --> Pseudognaphalium (Compositae) 

Radish --> Raphanus (Cruciferae) 

Ragweed --> Ambrosia (Compositae) 

Ragwort --> Senecio (Compositae) 

Ragwort --> Packera (Compositae) 

Raillardella --> Raillardella (Compositae) 

Ranger's buttons --> Sphenosciadium (Umbelliferae) 

Rape --> Brassica (Cruciferae) 

Raspberry --> Rubus (Rosaceae) 

Rattlebox --> Sesbania (Leguminosae) 

Rattlesnake fern --> Botrychium (Ophioglossaceae) 

Rattlesnake grass --> Briza (Gramineae) 

Rattlesnake grass --> Bromus (Gramineae) 

Rattlesnake weed --> Daucus (Umbelliferae) 

Rattlesnake-plantain --> Goodyera (Orchidaceae) 

Rattleweed --> Astragalus (Leguminosae) 

Redberry --> Rhamnus (Rhamnaceae) 

Redbud --> Cercis (Leguminosae) 

Red canker --> Pyrola (Ericaceae) 

Red-cedar --> Thuja (Cupressaceae) 

Red-flush --> Lampranthus (Aizoaceae) 

Red-heather --> Phyllodoce (Ericaceae) 

Redhot poker --> Kniphofia (Liliaceae) 

Red maids --> Calandrinia (Portulacaceae) 

Red osier --> Cornus (Cornaceae) 

Redroot --> Amaranthus (Amaranthaceae) 

Redscale --> Atriplex (Amaranthaceae) 

Red stem --> Ammannia (Lythraceae) 

Redtop --> Agrostis (Gramineae) 

Redwood --> Sequoia (Cuppressaceae) 

Redwood-ivy --> Vancouveria (Berberidaceae) 

Reed grass --> Phragmites (Gramineae) 

Reed grass --> Calamagrostis (Gramineae) 

Reed grass --> Cinna (Gramineae) 

Rescue grass --> Bromus (Gramineae) 

Rescue grass --> Festuca (Gramineae) 

Resin weed --> Grindelia (Compositae) 

Rhododendron --> Rhododendron (Ericaceae) 

Ribwort --> Plantago (Plantaginaceae) 

Rice cut grass --> Leersia (Gramineae) 

Ritual root --> Lomatium (Umbelliferae) 

Roble --> Quercus (Fagaceae) 

Rock cress --> Arabis (Cruciferae) 

Rock cress --> Hornungia (Cruciferae) 

Rock brake --> Cryptogramma (Pteridaceae) 

Rock-rose --> Helianthemum (Cistaceae) 

Rock-spiraea --> Holodiscus (Rosaceae) 

Rocket --> Eruca (Cruciferae) 

Rocket --> Hesperis (Cruciferae) 

Romanzoffia --> Romanzoffia (Boraginaceae) 

Rose --> Rosa (Rosaceae) 

Rose-bay --> Rhododendron (Ericaceae) 

Rose campion --> Silene (Caryophyllaceae) 

Rosette grass --> Panicum (Gramineae) 

Rosilla --> Helenium (Compositae) 

Rosin weed --> Calycadenia (Compositae) 

Rotala --> Rotala (Lythraceae) 

Rowan --> Sorbus (Rosaceae) 

Ruby grass --> Melinis (Gramineae)

Rue --> Ruta (Rutaceae) 

Rue-anemone --> Enemion (Ranunculaceae) 

Running-pine --> Lycopodium (Lycopodiaceae) 

Rupturewort --> Herniaria (Caryophyllaceae) 

Rush --> Juncus (Juncaceae) 

Rush-broom --> Lotus (Leguminosae) 

Russian thistle --> Salsola (Amaranthaceae) 

Rust-rose --> Helianthemum (Cistaceae) 

Rye --> Secale (Gramineae) 

Rye grass --> Elymus (Gramineae) 

Rye grass --> Lolium (Gramineae) 

Sage --> Salvia (Labiatae) 

Sagebrush --> Artemisia (Compositae) 

Sagewort --> Artemisia (Compositae) 

Sailor caps --> Dodecatheon (Primulaceae) 

Salal --> Gaultheria (Ericaceae) 

Salmon berry --> Rubus (Rosaceae) 

Salsify --> Scorzonera (Compositae) 

Salsify --> Tragopogon (Compositae) 

Salt-cedar --> Tamarix (Tamaricaceae) 

Salt bush --> Atriplex (Amaranthaceae) 

Salt grass --> Distichlis (Gramineae) 

Salt weed --> Atriplex (Amaranthaceae) 

Saltwort --> Glaux (Primulaceae) 

Saltwort --> Salicornia (Amaranthaceae) 

Samphire --> Salicornia (Amaranthaceae) 

Samphire --> Sarcocornia (Amaranthaceae) 

Sand berry --> Arctostaphylos (Ericaceae) 

Sand-corn --> Zigadenus (Liliaceae) 

Sand-crocus --> Romulea (Iridaceae) 

Sandmat --> Cardionema (Caryophyllaceae) 

Sandmat --> Chamaesyce (Euphorbiaceae) 

Sand pigmy --> Crassula (Crassulaceae) 

Sand spurry --> Spergularia (Caryophyllaceae) 

Sand-verbena --> Abronia (Nyctaginaceae) 

Sandweed --> Athysanus (Cruciferae) 

Sandwort --> Arenaria (Caryophyllaceae) 

Sandwort --> Minuartia (Caryophyllaceae) 

Sanicle --> Sanicula (Umbelliferae) 

Satin bells --> Calochortus (Liliaceae) 

Saw wort --> Saussurea (Compositae) 

Saxifrage --> Saxifraga (Saxifragaceae) 

Scarlet bugler --> Penstemon (Scrophulariaceae) 

Scent bottle --> Platanthera (Orchidaceae) 

Scorpion-grass --> Myosotis (Boraginaceae) 

Scorzonella --> Microseris (Compositae) 

Scotch thistle --> Onopordum (Compositae) 

Scouring-rush --> Equisetum (Equisetaceae) 

Scribner's grass --> Scribneria (Gramineae) 

Scurvy-grass --> Cochlearia (Cruciferae) 

Sea blush --> Plectritis (Valerianaceae) 

Sea hard grass --> Parapholis (Gramineae) 

Sea lyme grass --> Elymus (Gramineae) 

Sea milkwort --> Glaux (Myrsinaceae) 

Sea rocket --> Cakile (Cruciferae) 

Sea scale --> Atriplex (Amaranthaceae) 

Sea thrift --> Armeria (Plumbaginaceae) 

Sea-fig --> Carpobrotus (Aizoaceae) 

Sea-lavender --> Limonium (Plumbaginaceae) 

Sea-spinach --> Tetragonia (Aizoaceae) 

Sedge --> Carex (Cyperaceae) 

Sedum --> Sedum (Crassulaceae) 

Self-heal --> Prunella (Labiatae) 

Semaphore grass --> Pleuropogon (Gramineae) 

-134- 

Senecio --> Delaira (Compositae) 

Service berry --> Amelanchier (Rosaceae) 

Shad flower --> Erophila (Cruciferae) 

Shamrock --> Trifolium (Leguminosae) 

Shasta-aster --> Dieteria (Compositae) 

Shasta daisy --> Leucanthemum (Compositae) 

Shasta snow-wreath --> Neviusia (Rosaceae) 

Shepherd's needle --> Scandix (Umbelliferae) 

Shepherd's purse --> Capsella (Cruciferae) 

Shield fern --> Dryopteris (Dryopteridaceae) 

Shield leaf --> Darmera (Saxifragaceae) 

Shinleaf --> Pyrola (Ericaceae) 

Shooting star --> Dodecatheon (Primulaceae) 

Sickle grass --> Parapholis (Gramineae) 

Sidalcea --> Sidalcea (Malvaceae) 

Sierra cress --> Cardamine (Cruciferae) 

Sierra hare --> Carex (Cyperaceae) 

Sierra mint --> Salvia (Labiatae) 

Sierra redwood --> Sequoiadendron (Cupressaceae) 

Sierra sap --> Pleuricospora (Ericaceae) 

Sierra-laurel --> Leucothoë (Ericaceae) 

Sierra-mint --> Pycnanthemum (Labiatae) 

Side bells --> Orthilia (Ericaceae) 

Silktassel --> Garrya (Garryaceae) 

Silverpuffs --> Microseris (Compositae) 

Silvertop --> Glehnia (Umbelliferae) 

Silver weed --> Potentilla (Rosaceae) 

Single delight --> Moneses (Ericaceae) 

Siskiyou bells --> Prosartes (Liliaceae) 

Siskiyou mint --> Monardella (Labiatae) 

Six weeks grass --> Festuca (Gramineae) 

Skeleton weed --> Chondrilla (Compositae) 

Skullcap --> Scutellaria (Labiatae) 

Skunk bush --> Rhus (Anacardiaceae) 

Skunk-cabbage --> Lysichiton (Araceae) 

Skunk-cabbage --> Veratrum (Liliaceae) 

Skunk flower --> Ipomopsis (Polemoniaceae) 

Skunkweed --> Navarretia (Polemoniaceae) 

Sky pilot --> Polemonium (Polemoniaceae) 

Sky rocket --> Ipomopsis (Polemoniaceae) 

Sleepy-daisy --> Xanthisma (Compositae) 

Slink lily --> Scoliopus (Liliaceae) 

Slink pod --> Scoliopus (Liliaceae) 

Slough grass --> Beckmannia (Gramineae) 

Smartweed --> Polygonum (Polygonaceae) 

Smilo --> Stipa (Gramineae) 

Snake lily --> Dichelostemma (Liliaceae) 

Snakeroot --> Sanicula (Umbelliferae) 

Snakeweed --> Polygonum (Polygonaceae) 

Snapdragon --> Sairocarpus (Scrophulariaceae) 

Snapweed --> Impatiens (Balsaminaceae) 

Sneezeweed --> Helenium (Compositae) 

Snow brush --> Arctostaphylos (Ericaceae) 

Snow brush --> Ceanothus (Rhamnaceae) 

Snow plant --> Sarcodes (Ericaceae) 

Snow queen --> Veronica (Scrophulariaceae) 

Snow-drop bush --> Styrax (Styracaceae) 

Snow-on-the-mountain --> Euphorbia (Euphorbiaceae) 

Snowberry --> Symphoricarpos (Caprifoliaceae) 

Snowdrops --> Plagiobothrys (Boraginaceae) 

Snow-wreath --> Neviusia (Rosaceae) 

Soap plant --> Chenopodium (Amaranthaceae) 

Soap plant --> Chlorogalum (Liliaceae) 

Soapwort --> Saponaria (Caryophyllaceae) 

Solomon’s-lily Arum (Araceae)

Sorrel --> Rumex (Polygonaceae) 

Sour-grass --> Oxalis (Oxalidaceae) 

Sow-thistle --> Sonchus (Compositae) 

Spadderdock --> Nuphar (Nymphaeaceae) 

Spanish-thistle --> Xanthium (Compositae) 

Spearscale --> Atriplex (Amaranthaceae) 

Spearmint --> Mentha (Labiatae) 

Spearwort --> Ranunculus (Ranunculaceae) 

Speedwell --> Veronica (Orobanchaceae) 

Spice bush --> Calycanthus (Calycanthaceae) 

Spiderwort --> Tradescantia (Commelinaceae) 

Spig nut --> Aralia (Araliaceae) 

Spikemoss --> Selaginella (Selaginellaceae) 

Spikenard --> Aralia (Araliaceae) 

Spike-rush --> Eleocharis (Cyperaceae) 

Spikeweed --> Hemizonia (Compositae) 

Spineflower --> Chorizanthe (Polygonaceae) 

Spirea --> Spiraea (Rosaceae) 

Spleenwort --> Asplenium (Aspleniaceae) 

Spoke pod --> Thysanocarpus (Cruciferae) 

Spoonwort --> Cochlearia (Cruciferae) 

Spotted-hemlock --> Conium (Umbelliferae) 

Spotted-hemlock --> Cicuta (Umbelliferae) 

Sprangletop --> Leptochloa (Gramineae) 

Spring beauty --> Montia (Portulacaceae) 

Spring beauty --> Claytonia (Portulacaceae) 

Spring gold --> Crocidium (Compositae) 

Spruce --> Picea (Pinaceae) 

Spurge --> Euphorbia (Euphorbiaceae) 

Spurr[e]y --> Spergula (Caryophyllaceae) 

Squaw bush --> Rhus (Anacardiaceae) 

Squaw carpet --> Ceanothus (Rhamnaceae) 

Squaw-lettuce --> Hydrophyllum (Boraginaceae) 

Squaw mat --> Ceanothus (Rhamnaceae) 

Squirreltail --> Elymus (Gramineae) 

Squirreltail --> Hordeum (Gramineae) 

Stagger weed --> Delphinium (Ranunculaceae) 

Star flower --> Lithophragma (Saxifragaceae) 

Star flower --> Maianthemum (Liliaceae) 

Star flower --> Trientalis (Myrsinaceae) 

Star-grass --> Heteranthera (Pontederiaceae) 

Star mustard --> Coincya (Cruciferae) 

Star-of-Bethlehem --> Ornithogalum (Liliaceae) 

Star thistle --> Centaurea (Compositae) 

Star-tulip --> Calochortus (Liliaceae) 

Starwort --> Callitriche (Callitrichaceae) 

Starwort --> Stellaria (Caryophyllaceae) 

Steer's head --> Dicentra (Papaveraceae) 

Stenanthium --> Stenanthium (Liliaceae) 

Stephanomeria --> Stephanomeria (Compositae) 

Stick-tight --> Bidens (Compositae) 

Stickleaf --> Mentzelia (Loasaceae) 

Stickseed --> Hackelia (Boraginaceae) 

Stickweed --> Hemizonia (Compositae) 

Sticky seed --> Blennosperma (Compositae) 

Sticky-laurel --> Ceanothus (Rhamnaceae) 

Stingaree bush --> Pickeringia (Leguminosae) 

Stink bells --> Fritillaria (Liliaceae) 

Stink grass --> Eragrostis (Gramineae) 

Stinking Willie --> Senecio (Compositae) 

St. John's wort --> Hypericum (Guttiferae) 

Stonecrop --> Parvisedum (Crassulaceae) 

Stonecrop --> Rhodiola (Crassulaceae) 

Stonecrop --> Sedum (Crassulaceae) 

Storax --> Styrax (Styracaceae) 

-135- 

Storksbill --> Erodium (Geraniaceae) 

Straggle bush --> Ribes (Grossulariaceae) 

Strawberry --> Fragaria (Rosaceae) 

Strawberry-blite --> Chenopodium (Amaranthaceae) 

Stream orchis --> Epipactis (Orchidaceae) 

String flower --> Silene (Caryophyllaceae) 

Sugar bush --> Rhus (Anacardiaceae) 

Sugar stick --> Allotropa (Ericaceae) 

Sugar sumac --> Rhus (Anacardiaceae) 

Sugar-scoop --> Tiarella (Saxifragaceae) 

Sulfur flower --> Eriogonum (Polygonaceae) 

Summer's darling --> Clarkia (Onagraceae) 

Sun cup --> Camissonia (Onagraceae) 

Sundew --> Drosera (Droseraceae) 

Sunflower --> Helianthus (Compositae) 

Sun-rose --> Aptenia (Aizoaceae) 

Surf-grass --> Phyllospadix (Zosteraceae) 

Surfing-daisy --> Tripleurospermum (Compositae) 

Swamp laurel --> Kalmia (Ericaceae) 

Swamp whiteheads Sphenosciadium (Umbelliferae) 

Swamp-timothy --> Crypsis (Gramineae) 

Sweet alyssum --> Lobularia (Cruciferae) 

Sweet bay --> Laurus (Lauraceae) 

Sweet bush --> Calycanthus (Calycanthaceae) 

Sweet clover --> Melilotus (Leguminosae) 

Sweet fennel --> Foeniculum (Umbelliferae) 

Sweet flag --> Acorus (Acoraceae) 

Sweet grass --> Anthoxanthum (Gramineae) 

Sweet juice --> Glinus (Molluginaceae) 

Sweet shrub --> Calycanthus (Calycanthaceae) 

Sweet-brier [-briar] --> Rosa (Rosaceae) 

Sweet-cicely --> Osmorhiza (Umbelliferae) 

Swertia --> Swertia (Gentianaceae) 

Sword fern --> Polystichum (Dryopteridaceae) 

Sycamore --> Platanus (Platanaceae) 

Syringa --> Philadelphus (Hydrangeaceae) 

Tamarisk --> Tamarix (Tamaricaceae) 

Tanoak --> Lithocarpus (Fagaceae) 

Tansy --> Tanacetum (Compositae) 

Tansy mustard --> Descurainia (Cruciferae) 

Tare --> Vicia (Leguminosae) 

Tarplant --> Hemizonia (Compositae) 

Tarweed --> Harmonia (Compositae) 

Tarweed --> Hemizonella (Compositae) 

Tarweed --> Hemizonia (Compositae) 

Tarweed --> Kyhosia (Compositae) 

Tarweed --> Madia (Compositae) 

Tassel bush --> Garrya (Garryaceae) 

Tauschia --> Tauschia (Umbelliferae) 

Tawhiwhi --> Pittosporum (Pittosporaceae) 

Teasel --> Dipsacus (Dipsacaceae) 

Telegraph weed --> Heterotheca (Compositae) 

Texas mud baby --> Echinodorus (Alismataceae) 

Thale cress --> Arabidopsis (Cruciferae) 

Thelypodium --> Thelypodium (Cruciferae) 

Thimble berry --> Rubus (Rosaceae) 

Thintail grass --> Hainardia (Gramineae) 

Thistle --> Carduus (Compositae) 

Thistle --> Centaurea (Compositae) 

Thistle --> Cirsium (Compositae) 

Thistle --> Onopordum (Compositae) 

Thistle --> Silybum (Compositae) 

Thistle --> Sonchus (Compositae) 

Thorn-apple --> Datura (Solanaceae)

Thorow-wax --> Bupleurum (Umbelliferae) 

Threadstem --> Pterostegia (Polygonaceae) 

Three-awn grass --> Aristida (Gramineae) 

Three-square --> Scirpus (Cyperaceae) 

Thrift --> Armeria (Plumbaginaceae) 

Tibinagua --> Eriogonum (Polygonaceae) 

Tick brush --> Ceanothus (Rhamnaceae) 

Tick seed --> Coreopsis (Compositae) 

Tickle grass --> Agrostis (Gramineae) 

Tidy tips --> Layia (Compositae) 

Tim wort --> Microcala (Gentianaceae) 

Timothy --> Phleum (Gramineae) 

Tincture plant --> Collinsia (Scrophulariaceae) 

Tincture plant --> Collomia (Polemoniaceae) 

Tinker's penny --> Hypericum (Guttiferae) 

Toad-lily --> Montia (Portulacaceae) 

Toadflax --> Linaria (Scrophulariaceae) 

Toad’s mouth --> Sairocarpus (Scrophulariaceae) 

Tobacco --> Nicotiana (Solanaceae) 

Tobacco brush --> Ceanothus (Rhamnaceae) 

Tocalote --> Centaurea (Compositae) 

Tofieldia --> Triantha (Liliaceae) 

Tomato --> Lycopersicon (Solanaceae) 

Tonella --> Tonella (Scrophulariaceae) 

Toothpick weed --> Ammi (Umbelliferae) 

Toothwort --> Cardamine (Cruciferae) 

Torch-lily --> Kniphofia (Liliaceae) 

Torreya --> Torreya (Taxaceae) 

Tower mustard --> Arabis (Cruciferae) 

Toyon --> Heteromeles (Rosaceae) 

Tracyina --> Tracyina (Compositae) 

Trail plant --> Adenocaulon (Compositae) 

Trapper's-tea --> Ledum (Ericaceae) 

Traveler’s joy --> Clematis (Ranunculaceae) 

Tree mallow --> Lavatera (Malvaceae) 

Tree-of-heaven --> Ailanthus (Simaroubaceae) 

Tree poppy --> Dendromecon (Papaveraceae) 

Trefoil --> Lotus (Leguminosae) 

Trillium --> Pseudotrillium (Liliaceae) 

Trillium --> Trillium (Liliaceae) 

Trisetum --> Trisetum (Gramineae) 

Triteleia --> Triteleia (Liliaceae) 

Tropical whiteweed --> Ageratum (Compositae) 

Trumpet fireweed --> Lactuca (Compositae) 

Tule --> Scirpus (Cyperaceae) 

Tule-potato --> Sagittaria (Alismataceae) 

Tumble mustard --> Sisymbrium (Cruciferae) 

Tumble weed --> Salsola (Amaranthaceae) 

Tumbling mustard --> Sisymbrium (Cruciferae) 

Tuna --> Optunia (Cactaceae) 

Tundra mountain crown --> Oreostemma (Compositae) 

Turkey mullein --> Croton (Euphorbiaceae) 

Turkey beard --> Xerophyllum (Liliaceae) 

Turkey pea --> Sanicula (Umbelliferae) 

Twayblade --> Listera (Orchidaceae) 

Twinberry --> Lonicera (Caprifoliaceae) 

Twinflower --> Linnaea (Linnaeaceae) 

Twisted stalk --> Streptopus (Liliaceae) 

Umbrella milkwort --> Tolpis (Compositae) 

Umbrella plant --> Darmera (Saxifragaceae) 

Umbrella sedge --> Cyperus (Cyperaceae) 

Umbrella wort --> Tauschia (Umbelliferae) 

Unicorn plant --> Proboscidea (Martyniaceae) 

-136- 

Valerian --> Valeriana (Valerianaceae) 

Valley tassels --> Castilleja (Orobanchaceae) 

Vancouveria --> Vancouveria (Berberidaceae) 

Vanilla grass --> Anthoxanthum (Gramineae) 

Vanilla leaf --> Achlys (Berberidaceae) 

Veldt grass --> Ehrharta (Gramineae) 

Velvet grass --> Holcus (Gramineae) 

Venus' comb --> Scandix (Umbelliferae) 

Venus' looking-glass --> Triodanis (Campanulaceae) 

Venus' needle --> Scandix (Umbelliferae) 

Verdolaga --> Portulaca (Portulacaceae) 

Vernal grass --> Anthoxanthum (Gramineae) 

Vervain --> Verbena (Verbenaceae) 

Vetch --> Vicia (Leguminosae) 

Vetchling --> Lathyrus (Leguminosae) 

Viburnum --> Viburnum (Adoxaceae) 

Victorian box --> Pittosporum (Pittosporaceae) 

Vinegar weed --> Trichostema (Labiatae) 

Violet --> Viola (Violaceae) 

Violet cress --> Ionopsidium (Cruciferae) 

Virgin's-bower --> Clematis (Ranunculaceae) 

Wafer-ash --> Ptelea (Rutaceae) 

Wake robin --> Pseudotrillium (Liliaceae) 

Wake robin --> Trillium (Liliaceae) 

Wallflower --> Erysimum (Cruciferae) 

Wallflower-cabbage --> Coincya (Cruciferae) 

Walnut --> Juglans (Juglandaceae) 

Wand flower --> Sparaxis (Iridaceae) 

Wappato --> Sagittaria (Alismataceae) 

Wart cress --> Coronopus (Cruciferae) 

Water bent grass --> Polypogon (Gramineae) 

Water birch --> Betula (Betulaceae) 

Water dropwort --> Oenanthe (Umbelliferae) 

Water grass --> Echinochloa (Gramineae) 

Water hemlock --> Cicuta (Umbelliferae) 

Water nymph --> Najas (Hydrocharitaceae) 

Water pigmy --> Crassula (Crassulaceae) 

Water shield --> Brasenia (Nympheaceae) 

Water star-grass Heteranthera (Pontederiaceae) 

Water strife --> Ludwigia (Onagraceae) 

Water-clover --> Marsilea (Marsileaceae) 

Water-hawthorn --> Aponogeton (Aponogetonaceae) 

Water-lily --> Nymphaea (Nymphaeaceae) 

Water-parsley --> Oenanthe (Umbelliferae) 

Water-parsnip --> Berula (Umbelliferae) 

Water-parsnip --> Sium (Umbelliferae) 

Water-pepper --> Polygonum (Polygonaceae) 

Water-plantain --> Alisma (Alismataceae) 

Water star-grass --> Heteranthera (Pontederiaceae) 

Waterleaf --> Hydrophyllum (Boraginaceae) 

Watermeal --> Wolffia (Araceae) 

Waterweed --> Elodea (Hydrocharitaceae) 

Waterwort --> Elatine (Elatinaceae) 

Watsonia --> Watsonia (Iridaceae) 

Wattle --> Acacia (Leguminosae) 

Wave-wing --> Cymopterus (Umbelliferae) 

Wax flower --> Moneses (Ericaceae) 

Wax-myrtle --> Morella (Myricaceae) 

Waxy-dogbane --> Cycladenia (Apocynaceae) 

Western birch --> Betula (Betulaceae) 

Western juniper --> Juniperus (Cupressaceae) 

Western-laurel --> Leucothoë (Ericaceae) 

Wheat --> Triticum (Gramineae) 

Wheat grass --> Elymus (Gramineae)

Wheel mallow --> Modiola (Malvaceae) 

Whisker-brush --> Linanthus (Polemoniaceae) 

Whispering bells --> Emmenanthe (Boraginaceae) 

White crown --> Holozonia (Compositae) 

White heads --> Sphenosciadium (Umbelliferae) 

Whitethorn --> Ceanothus (Rhamnaceae) 

White top --> Cardaria (Cruciferae) 

White-top-aster --> Sericocarpus (Compositae) 

Whitlow-grass --> Draba (Cruciferae) 

Whortleberry --> Vaccinium (Ericaceae) 

Widgeon-grass --> Ruppia (Ruppiaceae) 

Wild grape --> Vitis (Vitaceae) 

Wild madder --> Galium (Rubiaceae) 

Wild-buckwheat --> Polygonum (Polygonaceae) 

Wild-celery --> Apiastrum (Umbelliferae) 

Wild-cucumber --> Marah (Cucurbitaceae) 

Wild-ginger --> Asarum (Aristolochiaceae) 

Wild-hollyhock --> Iliamna (Malvaceae) 

Wild-hyacinth --> Dichelostemma (Liliaceae) 

Wild-hyacinth --> Triteleia (Liliaceae) 

Wild-poppy --> Calycanthus (Calycanthaceae) 

Wild-rice --> Zizania (Gramineae) 

Wild-rye --> Elymus (Gramineae) 

Willow --> Salix (Salicaceae) 

Willow herb --> Epilobium (Onagraceae) 

Willow weed --> Polygonum (Polygonaceae) 

Wind poppy --> Stylomecon (Papaveraceae) 

Windflower --> Anemone (Ranunculaceae) 

Winter cress --> Barbarea (Cruciferae) 

Winter grass --> Poa (Gramineae) 

Wintergreen --> Gaultheria (Ericaceae) 

Wintergreen --> Orthilia (Ericaceae) 

Wintergreen --> Pyrola (Ericaceae) 

Wire-grass --> Eleocharis (Cyperaceae) 

Witch's teeth --> Lotus (Leguminosae) 

Witch grass --> Panicum (Gramineae) 

Woad --> Isatis (Cruciferae) 

Wokas --> Nuphar (Nymphaeaceae) 

Wolfsbane --> Aconitum (Ranunculaceae) 

Wood-aster --> Eurybia (Compositae) 

Wood beauty --> Drymocallis (Rosaceae) 

Wood cress --> Cardamine (Cruciferae) 

Wood fern --> Dryopteris (Dryopteridaceae) 

Wood fern --> Thelypteris (Thelypteridaceae) 

Wood sorrel --> Oxalis (Oxalidaceae) 

Woodland star --> Lithophragma (Saxifragaceae) 

Woodrush --> Luzula (Juncaceae) 

Woodsia --> Woodsia (Dryopteridaceae) 

Woollen breeches --> Hydrophyllum (Boraginaceae) 

Woolly pod --> Astragalus (Leguminosae) 

Woolly-heads --> Psilocarphus (Compositae) 

Woolly-sunflower --> Eriophyllum (Compositae) 

Wormseed --> Chenopodium (Amaranthaceae) 

Wormseed --> Dysphania (Amaranthaceae) 

Wormwood --> Artemisia (Compositae) 

Yampah --> Perideridia (Umbelliferae) 

Yarrow --> Achillea (Compositae) 

Yellow cress --> Rorippa (Cruciferae) 

Yellow-flax --> Sclerolinon (Linaceae) 

Yellow mats --> Sanicula (Umbelliferae) 

Yellow mustard --> Guillenia (Cruciferae) 

Yellow pincushion --> Chaenactis (Compositae) 

Yellow weed --> Parentucellia (Orobanchaceae) 

Yellow-oat --> Trisetum (Gramineae) 

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Yellow-yarrow --> Eriophyllum (Compositae) 

Yerba buena --> Clinopodium (Labiatae) 

Yerba de chivato --> Clematis (Ranunculaceae) 

Yerba de selva --> Whippleya (Hydrangeaceae) 

Yerba estera --> Elatine (Elatinaceae) 

Yerba fango --> Elatine (Elatinaceae) 

Yerba mansa --> Anemopsis (Saururaceae) 

Yerba reuma --> Frankenia (Frankeniaceae) 

Yerba santa --> Eriodictyon (Boraginaceae) 

Yew --> Taxus (Taxaceae) 

Youth-on-age --> Tolmiea (Saxifragaceae) 

Zigadene --> Zigadenus (Liliaceae) 

Zygadene --> Zigadenus (Liliaceae)

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L I S T 4 • E N D E M I C P L A N T S 

Picea breweriana • DNT, HUM, TRI, SHA, SIS + OR 

BERBERIDACEAE 

Mahonia nervosa var. mendocinensis • MEN 

Vancouveria chrysantha • DNT, SIS + OR 

BORAGINACEAE 

Cryptantha crinita • SHA, TEH 

Hackelia bella • HUM, MEN, SIS, TEH, TRI 

Phacelia argentea • DNT + OR 

Plagiobothrys lithocaryus • LAK, MEN 

Plagiobothrys tener var. subglaber • LAK 

CAMPANULACEAE 

Campanula shetleri • SHA, SIS 

CARYOPHYLLACEAE 

Minuartia decumbens • HUM, SHA, TEH, TRI 

Minuartia howellii • DNT, SIS + OR 

Minuartia rosei • SHA, TEH, TRI 

Minuartia stolonifera • SIS 

Silene bolanderi • HUM, MEN, TRI + OR 

Silene campanulata ssp. c. • COL, MEN, SHA, TEH, TRI 

Silene marmorensis • HUM, SIS 

Silene salmonacea • TRI 

Silene serpentinicola • DNT 

CONIFERS 

FLOWERING PLANTS 

COMPOSITAE 

Ageratina shastense • SHA 

Antennaria suffrutescens • DNT, HUM + OR 

Arnica cernua • DNT, HUM, SIS, SHA, TRI + OR 

Arnica venosa • SHA, TRI + OR 

Chaenactis suffrutescens • SIS, TRI 

Cirsium ciliolatum • SIS + OR 

Ericameria ophitidis • SHA, TEH, TRI 

Erigeron bloomeri var. nudatus • DNT, SIS + OR 

Erigeron cervinus • DNT, SIS, TRI + OR 

Erigeron foliosus var. mendocinus • DNT, HUM, MEN 

Erigeron klamathensis • DNT, HUM, SHA, SIS, TRI + OR 

Erigeron maniopotamicus • HUM, TRI 

Erigeron petrophilus var. viscidulus • HUM, SHA, SIS, TRI + OR 

Eriophyllum lanatum var. lanceolatum • DNT, HUM, SIS, TEH, TRI + OR 

Harmonia doris-nilesiae • TRI 

Harmonia stebbinsii • SHA, TEH, TRI 

Hemizonia congesta ssp. calyculata • LAK, MEN 

Hemizonia congesta ssp. tracyi • HUM, MEN, TRI 

Microseris laciniata ssp. siskiyouensis • DNT, HUM, SIS + OR 

Pyrrocoma racemosa ssp. congesta • DNT + OR 

Pyrrocoma racemosa ssp. pinetorum • SIS, TRI 

Raillardella pringlei • DNT, SIS, TRI 

Rudbeckia californica var. glauca • DNT, TRI + OR 

Rudbeckia glaucescens • DNT, HUM, SIS, TRI 

Rudbeckia klamathensis • DNT, HUM, SHA, SIS, TRI 

Wyethia longicaulis • HUM, MEN, TRI 

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CONVOLVULACEAE 

Calystegia collina ssp. tridactylosa • LAK, MEN 

Cuscuta jepsonii • HUM 

CRASSULACEAE 

Sedella leiocarpa • LAK 

Sedum laxum var. eastwoodiae • DNT, MEN 

Sedum laxum var. flavidum • DNT, GLN, HUM, SHA, SIS, TEH, TRI 

Sedum laxum var. heckneri • DNT, HUM, SIS, TRI + OR 

Sedum laxum var. laxum • DNT, SIS + OR 

Sedum oblanceolatum • SIS + OR 

Sedum obtusatum ssp. retusum • DNT, HUM, LAK, MEN, SHA, SIS, TRI+ OR 

Sedum paradisum • SHA, TRI 

CRUCIFERAE 

Arabis aculeolata • DNT, SIS + OR 

Arabis koehleri var. stipitata • DNT, SIS + OR 

Arabis macdonaldiana • DNT, MEN, SIS, TRI + OR 

Arabis rigidissima var. rigidissima • HUM, SIS, TRI 

Arabis rollei • SIS 

Arabis subpinnatifida • GLN, HUM, MEN, SIS, TRI + OR 

Boechera serpenticola • SHA 

Cardamine nuttallii var. gemmata • DNT, SIS + OR 

Draba carnosula • DNT, SIS, TRI 

Draba howellii • DNT, HUM, SHA, SIS, TRI + OR 

Draba pterosperma • SIS 

Erysimum menziesii ssp. eurekense • HUM 

Noccaea fendleri var. californica • HUM 

Streptanthus barbatus • LAK, SIS, TEH, TRI 

Streptanthus vernalis • LAK 

CYPERACEAE 

Carex serpenticola • DNT + OR 

ERICACEAE 

Arctostaphylos x cinerea • DNT + OR 

Arctostaphylos klamathensis • SHA, SIS, TRI 

Arctostaphylos manzanita ssp. roofii • LAK, TEH 

Arctostaphylos nortensis • DNT 

Arctostaphylos stanfordiana ssp. raichei • LAK, MEN 

Rhododendron occidentale var. paludosum • DNT, HUM 

EUPHORBIACEAE 

Euphorbia ocellata var. rattanii • COL, GLN, TEH 

FAGACEAE 

Quercus sadleriana • DNT, HUM, SIS, TEH, TRI + OR 

GENTIANACEAE 

Gentiana setigera • DNT, HUM, MEN, SIS, TRI + OR 

GRAMINEAE 

Calamagrostis foliosa • DNT, HUM, MEN 

Pleuropogon californicus var. davyi • LAK, MEN 

Poa piperi • DNT, SIS 

Puccinellia howellii • SHA 

GROSSULARIACEAE 

Ribes marshallii • HUM, SIS + OR 

HYDROPHYLLACEAE 

Phacelia dalesiana • SHA, SIS, TRI 

Phacelia greenei • SIS, TRI 

Phacelia leonis • DNT, SIS, TRI + OR 

Phacelia pringlei • SIS, TRI + OR 

IRIDACEAE 

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Iris bracteata • DNT + OR 

Iris innominata • DNT + OR 

Iris tenax ssp. klamathensis • HUM, SIS 

LABIATAE 

Monardella siskiyouensis • SIS 

Stachys bergii • DNT 

LEGUMINOSAE 

Astragalus agnicidus • HUM, MEN 

Lathyrus biflorus • HUM 

Lathyrus delnorticus • DNT, HUM, SIS + OR 

Lathyrus glandulosus • HUM, MEN 

Lathyrus lanszwertii var. tracyi • GLN, HUM, MEN, SIS, TRI 

Lotus yollabolliensis • HUM, TRI 

Lupinus antoninus • LAK, MEN, TEH, TRI 

Lupinus croceus var. pilosellus • SHA, SIS, TRI 

Lupinus elmeri var. elmeri • HUM, TRI 

Lupinus klamathensis • SIS + OR 

Lupinus lapidicola • DNT, HUM, SIS, TRI 

Lupinus lepidus var. constancei • HUM, TRI 

Lupinus tracyi • DNT, HUM, SIS, TRI + OR 

Trifolium longipes ssp. oreganum • DNT, HUM, SHA, SIS, TRI + OR 

Trifolium siskiyouense • SIS + OR 

LILIACEAE 

Allium hoffmanii • HUM, SHA, TEH, TRI 

Allium siskiyouense • DNT, HUM, SIS, TRI + OR 

Brodiaea coronaria ssp. rosea • COL, GLN, LAK, TEH 

Calochortus elegans var. nanus • SIS 

Calochortus monanthus • SIS 

Calochortus persistens • SIS 

Dichelostemma ida-maia • DNT, HUM, LAK, MEN, SHA, TRI + OR 

Dichelostemma x venustum • DNT, HUM, MEN, SHA, SIS, TRI + OR 

Erythronium citrinum var. citrinum • DNT, HUM, SIS, TRI + OR 

Erythronium citrinum var. roderickii • TRI 

Erythronium hendersonii • DNT, SIS + OR 

Erythronium howellii • DNT, HUM + OR 

Erythronium klamathense • SHA, SIS + OR (?) 

Fritillaria gentneri • SIS + OR 

Fritillaria glauca • COL, DNT, GLN, HUM, LAK, MEN, TRI + OR 

Hastingsia serpenticola • DNT, HUM, LAK, MEN, TRI + OR 

Lilium bolanderi • DNT, HUM, MEN, SIS + OR 

Lilium kelloggii • DNT, HUM + OR 

Lilium occidentale • DNT, HUM + OR 

Lilium pardalinum ssp. vollmeri • DNT, HUM, SIS, TRI + OR 

Lilium pardalinum ssp. wigginsii • DNT, SIS + OR 

Prosartes parvifolium • DNT + OR 

Pseudotrillium rivale • DNT, SIS + OR 

Trillium ovatum ssp. oettingeri • SHA, SIS, TRI 

Triteleia crocea • DNT, SHA, SIS, TRI + OR 

LIMNANTHACEAE 

Limnanthes bakeri • MEN 

LINACEAE 

Hesperolinon adenophyllum • HUM, LAK, MEN 

Hesperolinon didymocarpum • LAK 

Hesperolinon tehamense • GLN, TEH 

MALVACEAE 

Sidalcea hickmanii ssp. pillsburiensis • LAK 

Sidalcea malvaeflora ssp. elegans • DNT, SIS + OR 

Sidalcea malvaeflora ssp. nana • MEN, SIS, TEH + OR 

Sidalcea malvaeflora ssp. patula • DNT, HUM + OR 

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Sidalcea oregana ssp. eximia • DNT, HUM, MEN, SIS, TRI + OR 

NYCTAGINACEAE 

Mirabilis greenei • COL, GLN, SHA, SIS, TEH + OR 

ONAGRACEAE 

Clarkia amoena ssp. whitneyi • HUM, MEN 

Clarkia borealis ssp. borealis • SHA, TRI 

Epilobium nivium • COL, GLN, LAK, MEN, TRI 

Epilobium rigidum • DNT, SIS + OR 

Epilobium septentrionale • HUM, MEN, TRI 

Epilobium siskiyouense • SIS, TRI + OR 

PAPAVERACEAE 

Dicentra formosa ssp. oregana • DNT, HUM, SIS, TRI + OR 

POLEMONIACEAE 

Leptosiphon nuttallii ssp. howellii • TEH 

Leptosiphon rattanii • COL, GLN, LAK, MEN, TEH, TRI 

POLYGONACEAE 

Chorizanthe howellii • MEN 

Eriogonum alpinum • SIS, TRI 

Eriogonum congdonii • SHA, SIS, TRI 

Eriogonum diclinum • SIS + OR 

Eriogonum hirtellum • DNT, SIS 

Eriogonum kelloggii • MEN 

Eriogonum libertini • SHA, SIS, TEH, TRI 

Eriogonum pendulum • DNT + OR 

Eriogonum siskiyouense • SIS, TRI 

Eriogonum umbellatum var. lautum • SIS 

Eriogonum umbellatum var. nelsoniorum • HUM, TRI 

Eriogonum umbellatum var. speciosum • HUM, TRI 

Eriogonum ursinum var. erubescens • SHA, SIS, TRI 

PORTULACACEAE 

Lewisia cotyledon var. cotyledon • DNT, SIS, TRI + OR 

Lewisia cotyledon var. heckneri • HUM, SIS, TRI 

Lewisia cotyledon var. howellii • DNT, HUM, SHA, SIS, TRI + OR 

Lewisia oppositifolia • DNT, TEH, TRI + OR 

Lewisia stebbinsii • MEN, TRI 

RANUNCULACEAE 

Delphinium decorum ssp. tracyi • COL, GLN, HUM, LAK, MEN, TEH, TRI + OR 

Ranunculus occidentalis var. howellii • SIS + OR 

ROSACEAE 

Horkelia bolanderi ssp. bolanderi • COL, LAK, MEN 

Horkelia daucifolia ssp. daucifolia • SHA, SIS, TEH, TRI + OR 

Horkelia daucifolia ssp. latior • SIS 

Horkelia hendersonii • SIS + OR 

Horkelia sericata • DNT, HUM (?) + OR 

Ivesia pickeringii • SIS, TRI 

Rosa gymnocarpa var. serpentina • DNT, HUM, SIS + OR 

Rubus leucodermis var. trinitatis • TRI 

RUBIACEAE 

Galium ambiguum var. siskiyouense • DNT, HUM, MEN, SIS, TRI + OR 

Galium serpenticum ssp. scotticum • SIS, TRI 

SALICACEAE 

Salix delnortensis • DNT, SIS + OR 

Salix tracyi • DNT, HUM, LAK, MEN + OR 

SAXIFRAGACEAE 

Bensoniella oregana • HUM + OR 

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Heuchera micrantha var. macropetala • HUM, SIS + OR 

SCROPHULARIACEAE 

Castilleja hispida ssp. brevilobata • DNT, SIS + OR 

Castilleja mendocinensis • HUM, MEN 

Castilleja miniata ssp. elata • DNT, SIS + OR 

Castilleja schizotricha • SIS + OR 

Cordylanthus tenuis ssp. pallescens • SIS 

Mimulus primuloides var. linearifolius • SHA, SIS, TRI 

Pedicularis howellii • DNT, SIS + OR 

Penstemon anguineus • DNT, GLN, HUM, MEN, SIS, TEH, TRI + OR 

Penstemon filiformis • SHA, SIS, TRI 

Penstemon newberryi var. berryi • DNT, GLN, HUM, SHA, SIS, TRI + OR 

Penstemon purpusii • COL, GLN, HUM, LAK, MEN, TEH, TRI 

Penstemon tracyi • SIS, TRI 

Sairocarpus subcordatus • COL, GLN, LAK, TEH 

Veronica copelandii • SIS, TRI 

SMILACACEAE 

Smilax jamesii • DNT, SHA, SIS, TRI 

UMBELLIFERAE 

Lomatium engelmannii • MEN, SIS, TRI + OR 

Lomatium howellii • DNT, SIS + OR 

Perideridia leptocarpa • SIS + OR 

Sanicula peckiana • DNT, HUM + OR 

Tauschia glauca • DNT, HUM, TRI + OR 

Tauschia howellii • SIS + OR 

VIOLACEAE 

Viola primulifolia ssp. occidentalis • DNT + OR 

VISCACEAE 

Arceuthobium monticola • DNT, HUM, SHA, SIS, TRI 

Arceuthobium siskiyouense • DNT, GLN, HUM, SHA, SIS 

County Abbreviations: 

COL = Colusa; DNT = Del Norte; GLN = Glenn; HUM = Humboldt; LAK = Lake; MEN = Mendocino; SHA = Shasta; SIS = 

Siskiyou; TEH = Tehama; TRI = Trinity 

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LIST 5 • RARE, ENDANGERED, & THREATENED PLANTS 

Asplenium trichomanes ssp. trichomanes • CNPS 2.3 • DNT 

Azolla mexicana • CNPS 4.2 • LAK 

Botrychium pinnatum • CNPS 2.3 • SIS 

Equisetum palustre • CNPS 3 • LAK 

Lycopodiella inundata • CNPS 2.2 • HUM 

Lycopodium clavatum • CNPS 2.3 • HUM 

Ophioglossum pusillum • CNPS 2.2 • MEN, SIS 

Polystichum kruckebergii • CNPS 4.3 • SHA, SIS 

Polystichum lonchitis • CNPS 3 • SHA, SIS, TEH, TRI 

Selaginella scopulorum • CNPS 3 • DNT, SIS 

PTERIDOPHYTES 

CONIFERS 

Abies amabilis • CNPS 2.3 • SIS 

Abies lasiocarpa var. lasiocarpa • CNPS 2.3 • SIS 

Hesperocyparis bakeri • CNPS 4.2 • SHA, SIS, TEH 

Hesperocyparis pygmaea • CNPS 1B.2 • MEN 

Hesperocyparis nootkatensis • CNPS 4.3 • DNT, SIS 

Picea engelmannii var. engelmannii • CNPS 2.2 • SHA, SIS, TRI 

Pinus contorta ssp. bolanderi • CNPS 1B.2 • MEN 

ALISMATACEAE 

Alisma gramineum • CNPS 2.2 • MEN, SIS 

Sagittaria sanfordii • CNPS 1B.2 • DNT, SHA, TEH 


APOCYNACEAE 

Ascelpias solanoana • CNPS 4.2 • COL, GLN, LAK, MEN, SHA, TEH, TRI 

ARISTOLOCHIACEAE 

Asarum marmoratum • CNPS 2.3 • DNT, SIS 

BERBERIDACEAE 

Vancouveria chrysantha • CNPS 4.3 • DNT, SIS 

BORAGINACEAE 

Amsinckia lunaris • CNPS 1B.2 • COL, HUM, LAK 

Cryptantha clevelandii var. dissita • CNPS 1B.1 • LAK 

Cryptantha crinita • CNPS 1B.2 • SHA, TEH 

Cryptantha excavata • CNPS 4.3 • COL, LAK 

Hackelia amethystina • CNPS 4.3 • GLN, LAK, MEN, TEH, TRI 

Hackelia cusickii • CNPS 4.3 • SHA, SIS 

Mertensia bella • CNPS 2.2 • SIS 

Phacelia argentea • CNPS 1B.1 • DNT 

Phacelia cookei • CNPS 1B.1 • SIS 

Phacelia dalesiana • CNPS 4.3 • SHA, SIS, TRI 

Phacelia greenei • CNPS 1B.2 • SIS, TRI 

Phacelia insularis var. continentis • CNPS 1B.2 • MEN 

Phacelia leonis • CNPS 1B.3 • DNT, SIS, TRI 

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Plagiobothrys lithocaryus • CNPS 1A • LAK, MEN 

Romanzoffia tracyi • CNPS 2.3 • DNT?, HUM 

CACTACEAE 

Opuntia fragilis • CNPS 2.1 • SIS 

CAMPANULACEAE 

Campanula californica • CNPS 1B.2 • MEN 

Campanula scabrella • CNPS 4.3 • SHA, SIS,TRI 

Campanula shetleri • CNPS 1B.3 • SHA, SIS 

Campanula wilkinsiana • CNPS 1B.2 • SIS, TEH, TRI 

Howellia aquatilis • CNPS 2.2 • FT • MEN 

Legenere limosa • CNPS 1B.1 • LAK, SHA, TEH 

CAPRIFOLIACEAE 

Viburnum ellipticum • CNPS 2 • GLN, HUM, MEN, SHA 


Arenaria paludicola • CNPS 1B.1 • FE, SE • MEN 

Minuartia decumbens • CNPS 1B.2 • TRI 

Minuartia howellii • CNPS 1B.3 • DNT, SIS 

Minuartia rosei • CNPS 4.2 • SHA, TEH, TRI 

Minuartia stolonifera • CNPS 1B.3 • SIS 

Silene campanulata ssp. campanulata • CNPS 4.2 • SE • COL, MEN, SHA, TEH, TRI 

Silene marmorensis • CNPS 1B.2 • HUM, SIS 

Spergularia canadensis var. occidentalis • CNPS 2.1 • HUM 

Stellaria littoralis • CNPS 4.2 • HUM, MEN 

Stellaria obtusa • CNPS 4.3 • GLN, HUM, TEH 

COMPOSITAE 

Ageratina shastensis • CNPS 4.2 • SHA 

Anisocarpus scabridus=CNPS 1B.3 • COL, GLN, LAK, MEN, SHA, TEH, TRI 

Antennaria suffrutescens • CNPS 4.3 • DNT, HUM 

Arnica cernua • CNPS 4.3 • DNT, HUM, SHA, SIS, TRI 

Arnica spathulata ssp. spathulata • CNPS 4.3 • DNT, HUM, SIS, TRI 

Arnica venosa • CNPS 4.2 • SHA, TRI 

Arnica viscosa • CNPS 4.3 • SIS, TRI 

Balsamorhiza lanata • CNPS 1B.2 • SIS 

Balsamorhiza sericea • CNPS 1B.3 • SIS, TRI 

Blennosperma nanum var. robustum • CNPS 1B.2 • SR • MEN 

Chaenactis suffrutescens • CNPS 1B.3 • SIS, TRI 

Cirsium ciliolatum • CNPS 2.1 • SE • SIS 

Ericameria ophitidis • CNPS 4.3 • SHA, TEH, TRI 

Erigeron biolettii • CNPS 3 • HUM, MEN 

Erigeron bloomeri var. nudatus • CNPS 2.3 • DNT, SIS 

Erigeron cervinus • CNPS 4.3 • DNT, SIS, TRI 

Erigeron elegantulus • CNPS 4.3 • SHA, SIS, TEH 

Erigeron petrophilus var. viscidulus • CNPS 4.3 • HUM, SHA, SIS, TRI 

Erigeron robustior • CNPS 4.3 • HUM, MEN, TRI 

Erigeron supplex • CNPS 1B.2 • HUM, MEN 

Harmonia doris-nilesiae • CNPS 1B.1 • TRI 

Harmonia hallii • CNPS 1B.2 • COL, LAK 

Harmonia stebbinsii • CNPS 1B.2 • SHA, TEH, TRI 

Helianthus exilis • CNPS 4.2 • COL, GLN, LAK, SHA, SIS, TEH, TRI 

Hemizonia congesta ssp. calyculata • CNPS 4.3 • LAK, MEN 

Hemizonia congesta ssp. tracyi • CNPS 4.3 • HUM, MEN, TRI 

Hesperevax sparsiflora var. brevifolia • CNPS 2.2 • HUM, MEN 

Hulsea nana • CNPS 2.3 • SHA, SIS, TRI 

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Lasthenia burkei • CNPS 1B.1 • FE, SE • LAK, MEN 

Lasthenia californica ssp. bakeri • CNPS 1B.2 • MEN 

Lasthenia californica ssp. macrantha • CNPS 1B.2 • MEN 

Lasthenia conjugens • CNPS 1B.1 • FE • MEN 

Layia carnosa • CNPS 1B.1 • CNPS FE, SE • HUM 

Layia septentrionalis • CNPS 1B.2 • COL, GLN, LAK, MEN, TEH 

Micropus amphibolus • CNPS 3.2 • COL, LAK 

Microseris borealis • CNPS 2.1 • HUM, MEN 

Microseris paludosa • CNPS 1B.2 • MEN 

Packera bolanderi var. bolanderi • CNPS 2.2 • DNT, HUM, MEN 

Packera clevelandii • CNPS 4.3 • COL, LAK, TRI 

Packera macounii • CNPS 4.3 • DNT, SIS 

Pyrrocoma racemosa ssp. congesta • CNPS 2.1 • DNT 

Raillardella pringlei • CNPS 1B.2 • SIS, TRI 

Saussurea americana • CNPS 2.2 • SIS 

Tonestus lyallii • CNPS 2.3 • SIS, TRI 

Tracyina rostrata • CNPS 1B.2 • HUM, LAK, MEN 

Wyethia longicaulis • CNPS 4.3 • HUM, MEN, TRI 


Calystegia collina ssp. oxyphylla • CNPS 4.2 • LAK, MEN 

Calystegia purpurata ssp. saxicola • CNPS 1B.2 • MEN 

CRASSULACEAE 

Sedella leiocarpa • CNPS 1B.1 • FE, SE • LAK 

Sedum divergens • CNPS 2.3 • HUM, SIS 

Sedum laxum var. eastwoodiae • CNPS 1B.2 • MEN 

Sedum laxum var. flavidum • CNPS 4.3 • DNT, GLN, HUM, SHA, SIS, TEH, TRI 

Sedum laxum ssp. heckneri • CNPS 4.3 • DNT, HUM, SIS, TRI 

Sedum oblanceolatum • CNPS 1B.1 • SIS 

Sedum paradisum • CNPS 1B.3 • SHA, TRI 

CRUCIFERAE 

Arabis aculeolata • CNPS 2.2 • DNT, SIS 

Arabis macdonaldiana • CNPS 1B.1 • FE, SE • DNT, MEN, SIS, TRI 

Arabis modesta • CNPS 4.3 • SIS, TRI 

Arabis oregana • CNPS 4.3 • LAK, SIS, TRI 

Arabis rigidissima • CNPS 4.3 • HUM, SIS, TRI 

Cardamine nuttallii var. gemmata • CNPS 1B.3 • DNT, SIS 

Cardamine pachystigma var. dissectifolia • CNPS 3 • GLN, MEN, TEH 

Cochlearia officinalis var. arctica • CNPS 2.3 • DNT 

Draba aureola • CNPS 1B.3 • SHA, SIS, TRI 

Draba carnulosa • CNPS 1B.3 • DNT, HUM, SHA, SIS, TRI 

Draba howellii • CNPS 4.3 • DNT, HUM, SHA, SIS, TRI 

Draba pterosperma • CNPS 4.3 • SIS 

Erysimum menziesii ssp. eurekense • CNPS 1B.1 • FE, SE • HUM 

Erysimum menziesii ssp. menziesii • CNPS 1B.1 • FE, SE • MEN 

Noccaea fendleri var. californica • CNPS 1B.1 [as Thlaspi c.] • FE • HUM 

Rorippa columbiae • CNPS 1B.2 • HUM, SIS 

Streptanthus barbiger • CNPS 4.2 • LAK, MEN, TEH 

Streptanthus brachiatus ssp. hoffmanii • CNPS 1B.2 • LAK 

Streptanthus drepanoides • CNPS 4.3 • GLN, LAK, MEN, SHA, TEH, TRI 

Streptanthus howellii • CNPS 1B.2 • DNT 

Streptanthus morrisonii ssp. elatus • CNPS 1B.2 • LAK 

Streptanthus morrisonii ssp. kruckebergii • CNPS 1B.2 • LAK 

Thelypodium brachycarpum • CNPS 4.2 • COL, LAK, SHA, SIS, TRI 

Tropidocarpum capparideum • CNPS 1B.1 • GLN, LAK 

CYPERACEAE 

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Carex arcta • CNPS 2.2 • DNT, HUM, MEN 

Carex buxbaumii • CNPS 4.2 • GLN, HUM, SHA, SIS, TEH 

Carex californica • CNPS 2.3 • MEN 

Carex comosa • CNPS 2.1 • LAK 

Carex geyeri • CNPS 4.2 • HUM, SIS, TRI 

Carex halliana • CNPS 2.3 • SIS 

Carex hystricina • CNPS 2.1 • TRI 

Carex inops ssp. inops • CNPS 4.3 • HUM, SHA, SIS 

Carex leptalea • CNPS 2.2 • DNT, HUM, TRI 

Carex livida • CNPS 1A • MEN 

Carex lyngbyei • CNPS 2.2 • DNT, HUM, MEN 

Carex praticola • CNPS 2.2 • DNT, HUM 

Carex saliniformis • CNPS 1B.2 • HUM, MEN 

Carex viridula var. viridula • CNPS 2.3 • DNT, HUM, MEN 

Carex vulpinoidea • CNPS 2.2 • SHA, SIS, TEH, TRI 

Eleocharis parvula • CNPS 4.3 • GLN, HUM, SIS 

Rhynchospora alba • CNPS 2.2 • MEN, TRI 

Rhynchospora capitellata • CNPS 2.2 • SHA, TRI 

Schoenoplectus subterminalis • CNPS 2.3 • DNT, HUM, SHA, TEH 

DROSERACEAE 

Drosera anglica • CNPS 2.3 • SHA, SIS 

ERICACEAE 

Arctostaphylos canescens var. sonomensis • CNPS1B.2 • HUM, LAK, MEN, TEH 

Arctostaphylos hispidula • CNPS 4.2 • DNT, HUM 

Arctostaphylos klamathensis • CNPS 1B.2 • SHA, SIS, TRI 

Arctostaphylos malloryi • CNPS 4.3 • COL, SHA, TRI 

Arctostaphylos manzanita ssp. elegans • CNPS 1B.3 • COL, GLN, LAK, MEN 

Arctostaphylos nummularia ssp. mendocinoensis • CNPS 1B.2 • MEN 

Arctostaphylos nortensis • CNPS 4.3 • DNT 

Arctostaphylos stanfordiana ssp. raichei • CNPS 1B.1 • LAK, MEN 

Empetrum nigrum var. hermaphroditum • CNPS 2.2 • DNT, HUM 

Moneses uniflora • CNPS 4.3 • DNT, HUM, SIS 

Monotropa uniflora • CNPS 2.2 • DNT, HUM 

Pityopus californicus • CNPS 4.2 • DNT, HUM, MEN, SIS 

Vaccinium scoparium • CNPS 2.2 • DNT, SIS 

EUPHORBIACEAE 

Euphorbia ocellata ssp. rattanii • CNPS 1B.2 • COL, GLN, TEH 

GENTIANACEAE 

Gentiana plurisetosa • CNPS 1B.3 • DNT, HUM, SIS, TRI 

Gentiana setigera • CNPS 1B.2 • DNT, HUM, MEN, SIS, TRI 

Swertia umpquaensis • CNPS 2.2 • TRI 

GRAMINEAE 

Agrostis blasdalei var. blasdalei • CNPS 1B.2 • MEN 

Anthoxanthum nitens • CNPS 2 [as Hierochloë odorata] • MEN (?), SHA, SIS 

Calamagrostis bolanderi • CNPS 4.2 • HUM, MEN 

Calamagrostis foliosa • CNPS 4.2 • SR • DNT, HUM, MEN 

Calamagrostis ophitidis • CNPS 4.3 • LAK 

Deschampsia atropurpurea • CNPS 4.3 • SIS, TRI 

Glyceria grandis • CNPS 2.3 • HUM, MEN 

Melica spectabilis • CNPS 4.3 • DNT, HUM, MEN 

Muhlenbergia jonesii • CNPS 4.3 • SHA, SIS, TRI 

Orcuttia pilosa • CNPS 1B.1 • FE, SE • GLN, TEH 

Orcuttia tenuis • CNPS 1B.1• FT, SE • LAK, SHA, SIS, TEH 

Pleuropogon californica var. davyi • CNPS 4.3 • LAK, MEN 

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Pleuropogon hooverianus • CNPS 1B.1 • ST • MEN 

Pleuropogon refractus • CNPS 4 • DNT, HUM, MEN 

Poa piperi • CNPS 4.2 • DNT, SIS 

Poa rhizomata • CNPS 4.3 • DNT, SIS, TRI 

Puccinellia howellii • CNPS 1B.1 • SHA 

Puccinellia pumila • CNPS 2.2 • HUM, MEN 

Tuctoria greenei • CNPS 1B.1 • FE, SR • GLN, SHA, TEH 


Ribes laxiflorum • CNPS 4.3 • DNT, HUM 

Ribes marshallii • CNPS 4.3 • HUM, SIS 

Ribes roezlii var. amictum • CNPS 4.3 • HUM, LAK, MEN, SHA, TRI 

Ribes victoris • CNPS 4.3 • MEN 

IRIDACEAE 

Iris bracteata • CNPS 3.3 • DNT 

Iris innominata • CNPS 4.3 • DNT 

Iris tenax ssp. klamathensis • CNPS 4.3 • HUM, SIS 

JUNCACEAE 

Juncus dudleyi • CNPS 2.3 • TRI 

Juncus leiospermus var. leiospermus • CNPS 1B.1 • SHA, TEH 

Juncus regelii • CNPS 2.3 • SIS, TRI 

Juncus supiniformis • CNPS 2.2 • DNT, HUM, MEN 

LABIATAE 

Lycopus uniflorus • CNPS 4.3 • HUM, SHA, SIS 

Monardella villosa ssp. globosa • CNPS 1B.2 • HUM, LAK, MEN 

Monardella viridis ssp. viridis • CNPS 4.3 • LAK 

Salvia dorrii var. incana • CNPS 3 • SIS 

Scutellaria galericulata • CNPS 2.2 • SIS 

LEGUMINOSAE 

Astragalus agnicidus • CNPS 1B.1 • SE • HUM, MEN 

Astragalus breweri • CNPS 4.2 • COL, LAK, MEN 

Astragalus clevelandii • CNPS 4.3 • COL, LAK, TEH 

Astragalus inversus • CNPS 4.3 • SHA, SIS 

Astragalus pauperculus • CNPS 4.3 • SHA, TEH 

Astragalus pycnostachyus var. pycnostachyus • CNPS 1B.2 • HUM 

Astragalus rattanii var. jepsonianus • CNPS 1B.2 • COL, GLN, LAK, TEH 

Astragalus rattanii var. rattanii • CNPS 4.3 • COL, GLN, HUM, LAK, MEN, TEH, TRI 

Astragalus umbraticus • CNPS 2.3 • HUM 

Lathyrus biflorus • CNPS 1B.1 • HUM 

Lathyrus delnorticus • CNPS 4.3 • DNT, HUM, SIS 

Lathyrus glandulosus • CNPS 4.3 • HUM, MEN 

Lathryus japonicus • CNPS 2.1 • DNT, HUM 

Lathyrus palustris var. palustris • CNPS 2.2 • DNT, HUM 

Lotus yollabolliensis • CNPS 4.3 • HUM, TRI 

Lupinus antoninus • CNPS 1B.3 • LAK, MEN, TEH, TRI 

Lupinus croceus var. pilosellus • CNPS 4.3 • SHA, SIS, TRI 

Lupinus elmeri var. elmeri • CNPS 1B.2 • HUM, TRI 

Lupinus lapidicola • CNPS 4.3 • DNT, HUM, SIS, TRI 

Lupinus lepidus var. constancei • CNPS 1B.2 [as L. c.] • HUM, TRI 

Lupinus sericatus • CNPS 1B.2 • COL, LAK 

Lupinus tracyi • CNPS 4.3 • DNT, HUM, SIS, TRI 

Thermopsis gracilis • CNPS 4.3 • DNT, HUM, SHA, SIS, TRI 

Thermopsis robusta • CNPS 1B.2 • DNT?, HUM, SIS 

Trifolium amoenum • CNPS 1B.1 • FE • MEN 

Trifolium howellii • CNPS 4.3 • DNT, HUM, SIS 

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LENTIBULARIACEAE 

Pinguicula vulgaris ssp. macroceras • CNPS 2.2 • DNT, SIS 

LILIACEAE 

Allium fimbriatum var. purdyi • CNPS 4.3 • COL, LAK 

Allium hoffmanii • CNPS 4.3 • HUM, SHA, TEH, TRI 

Allium siskiyoense • CNPS 4.3 • DNT, HUM, SIS, TRI 

Brodiaea coronaria ssp. rosea • CNPS 1B.1 • SE • COL, GLN, LAK, TEH 

Calochortus greenei • CNPS 1B.2 • SIS 

Calochortus longebarbatus var. longebarbatus • CNPS 1B.2 • SHA, SIS 

Calochortus monanthus • CNPS 1A • SIS 

Calochortus persistens • CNPS 1B.2 • SR • SIS 

Chlorogalum pomeridianum var. minus • CNPS 1B.2 • COL, LAK, TEH 

Erythronium citrinum var. citrinum • CNPS 4.3 • DNT, HUM, SIS, TRI 

Erythronium citrinum var. roderickii • CNPS 1B.3 • TRI 

Erythronium helenae • CNPS 4.2 • LAK 

Erythronium hendersonii • CNPS 2.3 • DNT, SIS 

Erythronium howellii • CNPS 1B.3 • DNT, HUM 

Erythronium klamathense • CNPS 2.2 • SHA, SIS 

Erythronium revolutum • CNPS 2.2 • DNT, HUM, MEN, SIS 

Fritillaria agrestis • CNPS 4.2 • MEN 

Fritillaria pluriflora • CNPS 1B.2 • COL, GLN, LAK, TEH 

Fritillaria purdyi • CNPS 4.3 • COL, GLN, HUM, LAK, MEN, TEH, TRI 

Lilium bolanderi • CNPS 4.2 • DNT, HUM, MEN, SIS 

Lilium kelloggii • CNPS 4.3 • DNT, HUM 

Lilium maritimum • CNPS 1B.1 • MEN 

Lilium occidentale • CNPS 1B.1 • FE, SE • DNT, HUM 

Lilium pardalinum ssp. vollmeri • CNPS 4.3 • DNT, HUM, SIS, TRI 

Lilium pardalinum ssp. wigginsii • CNPS 4.3 • DNT, SIS 

Lilium rubescens • CNPS 4.2 • DNT, HUM, LAK, MEN, SHA, SIS, TRI 

Lilium washingtonianum ssp. purpurascens • CNPS 4.3 • DNT, HUM, SIS, TRI 

Trillium ovatum ssp. oettingeri • CNPS 4.2 • SHA, SIS, TRI 

Triteleia crocea var. crocea • CNPS 4.3 • DNT, SHA, SIS, TRI 

Triteleia hendersonii var. hendersonii • CNPS 2.2 • SIS 

Veratrum fimbriatum • CNPS 4.3 • MEN 

Veratrum insolitum • CNPS 4.3 • DNT, HUM, SHA, SIS, TRI 

Zigadenus fontanum • CNPS 4.2 • LAK, MEN 

LIMNANTHACEAE 

Limnanthes bakeri • CNPS 1B.1 • SR • MEN 

Limnanthes floccosa var. floccosa • CNPS 4.2 • LAK, SHA, SIS, TEH, TRI 

LINACEAE 

Hesperolinon adenophyllum • CNPS 1B.2 • HUM, LAK, MEN 

Hesperolinon bicarpellatum • CNPS 1B.2 • LAK 

Hesperolinon didymocarpum • CNPS 1B.2 • SE • LAK 

Hesperolinon drymarioides • CNPS 1B.2 • COL, GLN, LAK 

Hesperolinon serpentinum • CNPS 1B.1 • LAK 

Hesperolinon tehamense • CNPS 1B.3 • GLN, TEH 

MALVACEAE 

Iliamna bakeri • CNPS 4.2 • MEN, SHA, SIS, TEH, TRI 

Iliamna latibracteata • CNPS 1B.2 • DNT, HUM, SIS 

Sidalcea calycosa ssp. rhizomata • CNPS 1B.2 • MEN 

Sidalcea malachroides • CNPS 4.2 • HUM, MEN 

Sidalcea malvaeflora ssp. patula • CNPS 1B.2 • DNT, HUM 

Sidalcea malvaeflora ssp. purpurea • CNPS 1B.2 • MEN 

Sidalcea oregana ssp. eximia • CNPS 1B.2 • DNT, HUM, MEN, SIS, TRI 

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Sidalcea oregana ssp. hydrophila • CNPS 1B.2 • GLN, LAK, MEN 

NYCTAGINACEAE 

Abronia umbellata ssp. breviflora • CNPS 1B.1 • DNT, HUM, MEN 

ONAGRACEAE 

Clarkia amoena ssp. whitneyi • CNPS 1B.1 • HUM, MEN 

Clarkia borealis ssp. borealis • CNPS 1B.3 • SHA, TRI 

Clarkia gracilis ssp. tracyi • CNPS 4.2 • COL, HUM, LAK, TEH, TRI 

Epilobium luteum • CNPS 2.3 • SIS 

Epilobium nivium • CNPS 1B.2 • COL, GLN, LAK, MEN, TRI 

Epilobium oreganum • CNPS 1B.2 • DNT, GLN, HUM, MEN, SHA, SIS, TEH, TRI 

Epilobium rigidum • CNPS 4.3 • DNT, SIS 

Epilobium septentrionale • CNPS 4.3 • HUM, MEN, TRI 

Epilobium siskiyouense • CNPS 1B.3 • SIS, TRI 

Oenothera wolfii • CNPS 1B.1 • DNT, HUM, TRI 

ORCHIDACEAE 

Cypripedium californicum • CNPS 4.2 • DNT, HUM, MEN, SHA, SIS, TRI 

Cypripedium fasciculatum • CNPS 4.2 • DNT, HUM, SHA, SIS, TEH, TRI 

Cypripedium montanum • CNPS 4.2 • DNT, HUM, MEN, SHA, SIS, TEH, TRI 

Listera cordata • CNPS 4.2 • DNT, HUM, MEN, SIS 

Piperia candida • CNPS 4.3 • DNT, HUM, MEN, SIS, TRI 

Piperia michaelii • CNPS 4.2 • HUM 

Platanthera stricta • CNPS 4.2 • DNT, HUM, SIS, TRI 

OXALIDACEAE 

Oxalis suksdorfii • CNPS 4.3 • DNT, HUM 

PAPAVERACEAE 

Dicentra formosa ssp. oregana • CNPS 4.2 • DNT, HUM, SIS, TRI 

Eschscholzia hypecoides • CNPS 4.3 • MEN 

POLEMONIACEAE 

Collomia diversifolia • CNPS 4.3 • COL, GLN, LAK, MEN, SHA 

Collomia larsenii • CNPS 2.2 • SHA, SIS 

Collomia tracyi • CNPS 4.3 • DNT, HUM, SIS, TEH, TRI 

Eriastrum brandegeeae • CNPS 1B.2 • COL, GLN, LAK, TEH 

Gilia capitata ssp. pacifica • CNPS 1B.2 • DNT, HUM, MEN 

Gilia millefoliata • CNPS 1B.2 • DNT, HUM, MEN 

Leptosipohon acicularis • CNPS 4.2 • HUM, LAK, MEN 

Leptosiphon latisectus • CNPS 4.3 • COL, DNT, GLN, HUM, LAK, MEN, SHA, TEH, TRI 

Leptosiphon nuttallii ssp. howellii • CNPS 1B.3 • TEH 

Leptosiphon rattanii • CNPS 4.3 • COL, GLN, LAK, MEN, TEH, TRI 

Navarretia cotulifolia • CNPS 4.2 • COL, GLN, LAK, MEN 

Navarretia heterandra • CNPS 4.3 • COL, LAK, SHA, TEH, TRI 

Navarretia jepsonii • CNPS 4.3 • COL, GLN, LAK, TEH 

Navarretia leucocephala ssp. bakeri • CNPS 1B.1 • COL, LAK, MEN, TEH 

Navarretia leucocephala ssp. pauciflora • CNPS 1B.1 • FE, ST • LAK 

Navarretia leucocephala ssp. pleiantha • CNPS 1B.2 • FE, SE • LAK 

Navarretia sinistra ssp. pinnatisecta • CNPS 4.3 • GLN, HUM, LAK, MEN, TEH, TRI 

Navarretia subuligera • CNPS 4.3 • DNT, LAK, MEN, SHA, TEH 

Phlox muscoides • CNPS 2.3 • SHA, SIS 

POLYGONACEAE 

Chorizanthe howellii • CNPS 1B.2 • FE, ST • MEN 

Eriogonum alpinum • CNPS 1B.2 • SE • SIS, TRI 

Eriogonum congdonii • CNPS 4.3 • SHA, SIS, TRI 

Eriogonum diclinum • CNPS 4.3 • SIS, TRI 

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Eriogonum hirtellum • CNPS 1B.3 • DNT, SIS 

Eriogonum kelloggii • CNPS 1B.2 • SE • MEN 

Eriogonum libertini • CNPS 4.2 • SHA, SIS, TEH, TRI 

Eriogonum luteolum var. caninum • CNPS 3.2 • COL, LAK 

Eriogonum nervulosum • CNPS 1B.2 • COL, GLN, LAK 

Eriogonum nudum var. paralinum • CNPS 2.2 • DNT 

Eriogonum pendulum • CNPS 2.2 • DNT 

Eriogonum siskiyouense • CNPS 4.3 • SIS, TRI 

Eriogonum strictum var. greenei • CNPS 4.3 • COL, MEN, SIS, TEH, TRI 

Eriogonum ternatum • CNPS 4.3 • DNT, SIS, TEH 

Eriogonum tripodum • CNPS 4.2 • COL, LAK, TEH 

Eriogonum umbellatum var. bahiiforme • CNPS 4.2 • COL, GLN, HUM, LAK, MEN, SIS 

Eriogonum umbellatum var. humistratum • CNPS 4.3 • SIS, TRI 

Polygonum bidwelliae • CNPS 4.3 • SHA, TEH 

PORTULACACEAE 

Calandrinia breweri • CNPS 4.2 • MEN 

Cistanthe quadripetala • CNPS 4.3 • GLN, LAK, TEH, TRI 

Claytonia palustris • CNPS 4.3 • SIS, TEH 

Claytonia umbellata • CNPS 2.3 • SIS 

Lewisia cotyledon var. heckneri • CNPS 1B.2 • HUM, SIS, TRI 

Lewisia cotyledon var. howellii • CNPS 3.2 • DNT, HUM, SHA, SIS, TRI 

Lewisia oppositifolia • CNPS 2.2 • DNT, TEH, TRI 

Lewisia stebbinsii • CNPS 1B.2 • MEN, TRI 

Montia howellii • CNPS 2.2 • DNT, HUM, TRI 

POTAMOGETONACEAE 

Potamogeton foliosus var. fibrillosus • CNPS 2.2 • DNT 

Potamogeton robbinsii • CNPS 2.3 • SIS 

Potamogeton zosteriformis • CNPS 2.2 • LAK 

PRIMULACEAE 

Androsace filiformis • CNPS 2.3 • SIS 

Trientalis europaea ssp. arctica • CNPS 2.2 • DNT 

RANUNCULACEAE 

Delphinium uliginosum • CNPS 4.2 • COL, LAK, SIS 

Ranunculus lobbii • CNPS 4.2 • MEN 

RHAMNACEAE 

Ceanothus confusus • CNPS 1B.1 • LAK, MEN 

Ceanothus foliosus var. vineatus • CNPS 1B.1 • MEN 

Ceanothus gloriosus var. exaltatus • CNPS 4.3 • MEN 

Ceanothus gloriosus var. gloriosus • CNPS 4.3 • MEN 

ROSACEAE 

Geum aleppicum • CNPS 2.2 • SIS 

Horkelia bolanderi • CNPS 1B.2 • COL, LAK, MEN 

Horkelia congesta ssp. nemorosa • CNPS 2.1 • DNT 

Horkelia hendersonii • CNPS 1B.1 • SIS 

Horkelia marinensis • CNPS 1B.2 • MEN 

Horkelia sericata • CNPS 4.3 • DNT, HUM 

Horkelia tenuiloba • CNPS 1B.2 • MEN 

Ivesia longibracteata • CNPS 1B.3 • SHA 

Ivesia pickeringii • CNPS 1B.2 • SIS, TRI 

Neviusia cliftonii • CNPS 1B.2 • SHA 

Potentilla cristae • CNPS 1B.3 • SIS, TRI 

Rubus nivalis • CNPS 2.3 • DNT, SIS 

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Sanguisorba officinalis • CNPS 2.2 • DNT, HUM, MEN 

RUBIACEAE 

Galium oreganum • CNPS 3 • DNT, SIS 

Galium serpenticum ssp. scotticum • CNPS 1B.2 • SIS, TRI 

SALICACEAE 

Salix delnortensis • CNPS 4.3 • DNT, SIS 

SARRACENIACEAE 

Darlingtonia californica • CNPS 4.2 • DNT, SHA, SIS, TRI 

SAXIFRAGACEAE 

Bensoniella oregana • CNPS 1B.1 • SR • HUM 

Mitella caulescens • CNPS 4.2 • DNT, HUM, MEN, SIS, TEH 

Saxifraga caespitosa • CNPS 2.3 • SIS 

Saxifraga howellii • CNPS 4.3 • DNT, SIS 

Saxifraga nuttallii • CNPS 2.1 • DNT 

Saxifraga rufidula • CNPS 2.3 • SIS 

Tiarella trifoliata var. trifoliata • CNPS 3 • HUM, TRI 


Boschniakia hookeri • CNPS 2.3 • DNT, HUM, MEN 

Castilleja affinis ssp. litoralis • CNPS 2.2 • DNT, HUM, MEN 

Castilleja ambigua ssp. humboldtiensis • CNPS 1B.2 • HUM, MEN 

Castilleja hispida ssp. brevilobata • CNPS 4.2 • DNT, SIS 

Castilleja mendocinensis • CNPS 1B.2 • HUM, MEN 

Castilleja miniata ssp. elata • CNPS 2.2 • DNT, SIS 

Castilleja schizotricha • CNPS 4.3 • SIS 

Collinsia corymbosa • CNPS 1B.2 • HUM, MEN 

Cordylanthus maritimus ssp. palustris • CNPS 1B.2 • HUM 

Cordylanthus tenuis ssp. pallescens • CNPS 1B.2 • SIS 

Gratiola heterosepala • CNPS 1B.2 • SE • LAK, SHA, SIS, TEH 

Mimulus glaucescens • CNPS 4.3 • COL, LAK, SHA, TEH 

Mimulus nudatus • CNPS 4.3 • LAK, MEN 

Orobanche valida ssp. howellii • CNPS 4.3 • GLN, LAK, MEN, TEH 

Orthocarpus cuspidatus ssp. c. • CNPS 4.3 • HUM, SIS 

Orthocarpus pachystachyus • CNPS 1B.1 • SIS 

Pedicularis bracteosa var. flavida • CNPS 4.3 • SIS, TRI 

Pedicularis contorta • CNPS 4.3 • SIS, TRI 

Pedicularis howellii • CNPS 4.3 • DNT, SIS 

Penstemon cinicola • CNPS 4.3 • DNT, SIS 

Penstemon filiformis • CNPS 1B.3 • SHA, SIS, TRI 

Penstemon heterodoxus var. shastensis • CNPS 4.3 • SHA, SIS 

Penstemon newberryi ssp. sonomensis • CNPS 1B.3 • LAK 

Penstemon tracyi • CNPS 1B.3 • SIS, TRI 

Sairocarpus subcordatus • CNPS 4.3 [as Antirrhinum s.] • COL, GLN, LAK, TEH 

Sairocarpus virga • CNPS 4.3 [as Antirrhinum v.] • LAK, MEN 

Veronica copelandii • CNPS 4.3 • SIS, TRI 

SMILACACEAE 

Smilax jamesii • CNPS 1B.3 • DNT, SHA, SIS, TRI 

UMBELLIFERAE 

Angelica lucida • CNPS 4.2 • DNT, HUM, MEN 

Eryngium constancei • CNPS 1B.1 • FE, SE • LAK 

Glehnia littoralis ssp. leiocarpa • CNPS 4.2 • DNT, HUM, MEN 

Lomatium engelmannii • CNPS 4.3 • MEN, SIS, TRI 

Lomatium hooveri • CNPS 4.3 • COL, LAK 

-152-

Lomatium howellii • CNPS 4.3 • DNT, SIS 

Lomatium martindalei • CNPS 2.3 • DNT, SIS 

Lomatium peckianum • CNPS 2.2 • SIS 

Lomatium repostum • CNPS 4.3 • LAK 

Lomatium tracyi • CNPS 4.3 • HUM, SHA, SIS, TEH, TRI 

Perideridia gairdneri ssp. gairdneri • CNPS 4.2 • MEN 

Perideridia leptocarpa • CNPS 4.3 • SIS 

Sanicula peckiana • CNPS 4.3 • DNT, HUM 

Sanicula tracyi • CNPS 4.2 • HUM, TRI 

Tauschia glauca • CNPS 4.3 • DNT, HUM, TRI 

Tauschia howellii • CNPS 1B.3 • SIS 

VIOLACEAE 

Viola langsdorfii • CNPS 2.1 • DNT 

Viola palustris • CNPS 2.2 • DNT, HUM, MEN 

Viola primulifolia ssp. occidentalis • CNPS 1B.2 • DNT 

-153-

The annotations beside a plant’s entry is its classification in the California Native Plant Society’s “Inventory of Rare and 

Endangered Plants of California” (7 th edition): 1A= Presumed extinct in California; 1B = Rare or endangered in California and 

elsewhere; 2 = Rare or endangered in California, but more common elsewhere; 3 = More information needed; 4 = Plants of 

limited distribution. The extension .1, as in 2.1, indicates that the plant is seriously endangered in California, with over 80% 

of its occurrences threatened/high degree and immediacy of threat; .2, that it is fairly endangered (20-80% threatened), and 

.3, that it is not very endangered in California (

F E R N S & A L L I E S 

Dennstaedtiaceae 

Pteridium aquilinum var. pubescens 

Equisetaceae 

Equisetum arvense 

C O N I F E R S 

Cupressaceae 

Cupressus macrocarpa • Cal-IPC) 

F L O W E R I N G P L A N T S 

Aizoaceae 

Carpobrotus chilensis • Cal-IPC 

Carpobrotus chilensis x C. edulis hybrids • Cal-IPC 

Carpobrotus edulis • Cal-IPC 

Amaranthaceae 

Amaranthus albus 

Amaranthus blitoides 

Salsola tragus • Cal-IPC. State List: C 

Apocynaceae 

Apocynum androsaemifolium • ??? 

Vinca major 

Aquifoliaceae 

Ilex aquifolium • Cal-IPC 

Araceae 

Zantedeschia aethiopica • Cal-IPC 

Araliaceae 

Hedera canariensis • Cal-IPC 

Hedera helix • Cal-IPC 

Boraginaceae 

Cynoglossum officinale • Cal-IPC 

Myosotis latifolia • Cal-IPC 

Symphytum asperum • State List: B 

Caryophyllaceae 

Cerastium glomeratum 

Gypsophila paniculata • State List: B 

Saponaria officinalis • Cal-IPC 

Spergula arvensis 

Sterllaria media 

Compositae 

LIST 6 • WEEDS 

-155- 

Achillea millefolium 

Acroptilon repens • Cal-IPC. State List: B 

Arctotheca calendula • Cal-IPC. State List: A 

Bellis perennis 

Carduus acanthoides • Cal-IPC. State List: A 

Carduus nutans • Cal-IPC. State List: A 

Carduus pycnocephalus • Cal-IPC. State List: C 

Carduus tenuiflorus • Cal-IPC. State List: C 

Carthamus lanatus • Cal-IPC. State List: B 

Centaurea calcitrapa • Cal-IPC. State List: B 

Centaurea debeauxii • Cal-IPC 

Centaurea diffusa • Cal-IPC. State List: A 

Centaurea maculosa • Cal-IPC 

Centaurea solstitialis • Cal-IPC. State List: C 

Centaurea stoebe ssp. micranthos • State List: A 

Centaurea virgata ssp. squarrosa • Cal-IPC. State List: A 

Chamomilla suaveolens 

Chondrilla juncea • Cal-IPC. State List: A 

Cirsium arvense • Cal-IPC. State List: B 

Cirsium ochrocentrum • State List: A 

Cotula coronopifolia • Cal-IPC 

Cynara cardunculus • Cal-IPC. State List: B 

Delairea odorata • Cal-IPC 

Erechtites glomerata • Cal-IPC 

Erechtites minima • Cal-IPC 

Helichrysum petiolare • Cal-IPC 

Helminthotheca echioides • Cal-IPC, as Picris e. 

Hypochaeris glabra • Cal-IPC 

Hypochaeris radicata • Cal-IPC 

Iva axillaris • State List: C 

Leucanthemum vulgare • Cal-IPC 

Onopordum acanthium • Cal-IPC. State List: A 

Onopordum tauricum • State List: A 

Senecio jacobaea • Cal-IPC. State List: B 

Silybum marianum • Cal-IPC 

Soliva sessilis 

Tagetes minuta • State List: A 

Tanacetum vulgare • Cal-IPC 

Xanthium spinosum 

Xanthium strumarium 

Convolvulaceae 

Convolvulus arvensis • State List: C 

Cuscuta spp. • Federal List: NW 

Cruciferae 

Brassica nigra • Cal-IPC 

Brassica rapa • Cal-IPC 

Cakile maritima • Cal-IPC 

Capsella bursa-pastoris 

Cardaria chalepensis • Cal-IPC. State List: B 

Cardaria draba • Cal-IPC. State List: B 

Cardaria pubescens • Cal-IPC. State List: B 

Coronopus didymus

Descurainia sophia • Cal-IPC 

Hirschfeldia incana • Cal-IPC 

Isatis tinctoria • Cal-IPC. State List: B 

Lepidium latifolium • Cal-IPC. State List: B 

Lobularia maritima • Cal-IPC 

Raphanus raphinastrum 

Raphanus sativus • Cal-IPC 

Sinapis arvensis • Cal-IPC 

Cyperaceae 

Cyperus esculentus • State List: B • ??? 

Dipsacaceae 

Dipsacus fullonum • Cal-IPC 

Dipsacus sativus • Cal-IPC 

Euphorbiaceae 

Croton setigerus 

Euphorbia esula • Cal-IPC. State List: A 

Euphorbia oblongata • Cal-IPC. State List: B 

Geraniaceae 

Erodium cicutarium • Cal-IPC 

Geranium dissectum • Cal-IPC 

Guttiferae 

Hypericum perforatum • Cal-IPC 

Gramineae 

Aegilops cylindrica • State List: B 

Aegilops geniculata • State List: B 

Aegilops triuncialis • Cal-IPC. State List: B 

Agrostis avenacea • Cal-IPC ?? 

Agrostis stolonifera • Cal-IPC 

Alopecurus pratensis ??? 

Ammophila arenaria • Cal-IPC 

Anthoxanthum odoratum • Cal-IPC 

Arrhenatherum elatius 

Arundo donax • Cal-IPC 

Avena barbata • Cal-IPC 

Avena sativa • Cal-IPC 

Briza maxima • Cal-IPC 

Briza minor 

Bromus catharticus 

Bromus diandrus • Cal-IPC 

Bromus hordeaceus • Cal-IPC 

Bromus inermis 

Bromus japonicus • Cal-IPC 

Bromus rubens • Cal-IPC 

Bromus tectorum • Cal-IPC 

Cortaderia jubata • Cal-IPC 

Cortaderia selloana • Cal-IPC ??? 

Cynodon dactylon • Cal-IPC 

Cynosurus echinatus • Cal-IPC 

Dactylis glomerata • Cal-IPC 

Digitaria sanguinalis 

Distichlis spicata 

Elymus caput-medusae • Cal-IPC. State List: C 

Elymus repens • State List: B 

-156- 

Eragrostis cilianensis ??? 

Festuca arundinacea • Cal-IPC 

Festuca bromoides 

Festuca myuros • Cal-IPC, as Vulpia m. 

Gastridium phleoides • ??? 

Holcus lanatus • Cal-IPC 

Hordeum marinum • Cal-IPC 

Hordeum murinum • Cal-IPC 

Lolium perenne • Cal-IPC, as L. multiflorum 

Paspalum notatum ??? 

Pennisetum clandestinum • Cal-IPC. 

Federal List: NW. State Lists: C & Q 

Phalaris aquatica • Cal-IPC 

Phragmites australis • Cal-IPC 

Poa annua 

Poa bulbosa 

Poa pratensis • Cal-IPC 

Polypogon monspeliensis • Cal-IPC 

Secale cereale 

Sorghum halepense • State List: C 

Spartina densiflora • Cal-IPC ??? 

Stipa miliacea ??? 

Haloragaceae 

Myriophyllum aquaticum • Cal-IPC 

Myriophyllum spicatum • Cal-IPC 

Hydrocharitaceae 

Egeria densa • Cal-IPC 

Hydrilla verticillata • Cal-IPC. Federal: NW. State: A, NA, & Q 

Iridaceae 

Crocosmia x cocosmiiflora • Cal-IPC 

Iris douglasiana • State List: C 

Iris missouriensis • State List: C 

Watsonia meriana • Cal-IPC 

Labiatae 

Marrubium vulgare • Cal-IPC 

Mentha pulegium • Cal-IPC 

Prunella vulgaris 

Salvia virgata • State List: A 

Stachys • ??? 

Leguminosae 

Acacia dealbata • Cal-IPC 

Acacia melanoxylon • Cal-IPC 

Cytisus scoparius • Cal-IPC. State List: C 

Cytisus striatus • Cal-IPC 

Genista monspessulana • Cal-IPC. State List: C 

Lathyrus latifolius 

Lathyrus odoratus 

Lotus corniculatus 

Lupinus arboreus • Cal-IPC 

Medicago lupulina 

Medicago polymorpha • Cal-IPC 

Melilotus albus 

Melilotus indicus 

Melilotus officinalis

Robinia pseudoacacia • Cal-IPC 

Spartium junceum • Cal-IPC 

Trifolium hirtum • Cal-IPC 

Ulex europaeus • Cal-IPC. State List: B 

Liliaceae 

Allium neopolitanum • State List: B 

Allium paniculatum • State List: B 

Allium vineale • State List: B 

Lythraceae 

Lythrum hyssopifolium • Cal-IPC 

Lythrum salicaria • Cal-IPC. State List: B 

Malvaceae 

Abutilon theophrasti 

Malva nicaeensis 

Malva parviflora 

Malva sylvestris 

Malvella leprosa • State List: C 

Myrtaceae 

Eucalyptus camaldulensis • Cal-IPC 

Eucalyptus globosus • Cal-IPC 

Nymphaeaceae 

Cabomba caroliniana • State List: QW • ??? 

Onagraceae 

Epilobium brachycarpum 

Epilobium ciliatum 

Oenothera elata ssp. hirsuta 

Oxalidaceae 

Oxalis pes-caprae • Cal-IPC 

Plantaginaceae 

Plantago lanceolata • Cal-IPC 

Polygonaceae 

Polygonum amphibium var. emersum • State List: C 

Polygonum cuspidatum • Cal-IPC 

Polygonum polystachyum • State List: B 

Polygonum sachalinense • Cal-IPC. State List: B 

Rumex acetosella • Cal-IPC 

Rumex crispus • Cal-IPC 

Portulacaceae 

Claytonia/Montia • ??? 

Portulaca oleracea ??? 

Potamogetonaceae 

Potamogeton crispus • Cal-IPC 

Primulaceae 

Anagallis arvensis 

Ranunculaceae 

Ranunculus muricatus 

-157- 

Ranunculus repens • Cal-IPC 

Rosaceae 

Acaena novae-zelandiae • State List: A 

Cotoneaster franchetii • Cal-IPC 

Cotoneaster pannosus • Cal-IPC 

Crataegus monogyna • Cal-IPC 

Rosa canina 

Rubus armeniacus • Cal-IPC 

Rubus laciniatus 

Rubus leucodermis 

Rubus parviflorus 

Rubus ursinus 

Rubiaceae 

Galium aparine 

Galium parisiense 

Sherardia arvensis • ??? 

Scrophulariaceae 

Bellardia trixago • Cal-IPC 

Digitalis purpurea • Cal-IPC 

Linaria dalmatica • Cal-IPC. State List: A 

Linaria vulgaris • Cal-IPC 

Orobanche spp. • Federal List: NW 

Parentucellia viscosa • Cal-IPC 

Verbascum blattaria 

Verbascum thapsus • Cal-IPC 

Simaroubaceae 

Ailanthus altissima • Cal-IPC 

Solanaceae 

Nicotiana glauca • Cal-IPC • ??? 

Physalis longifolia • State List: A 

Solanum americanum 

Solanum nigrum 

Solanum elaegnifolium • State List: B 

Solanum physalifolium 

Tamaricaceae 

Tamarix parviflora • Cal-IPC 

Tamarix ramosissima 

Umbelliferae 

Cicuta maculosa 

Conium maculatum • Cal-IPC 

Daucus carota 

Daucus pusillus 

Foeniculum vulgare • Cal-IPC 

Torilis arvensis • Cal-IPC 

Urticaceae 

Urtica dioica ssp. gracilis 

Urtica urens 

Verbenaceae 

Phyla nodiflora

Viscaceae 

Arceuthobium spp. • ??? 

Phoradendron spp. • ??? 

Zygophyllaceae 

Tribulus terrestris 

Zygophyllum fabago • State List: A • ??? 

NOTES 

??? indicates plant remains under review 

Ratings (California): 

A = A list of noxious weeds 

B = B list of noxious weeds 

C = C list of noxious weeds 

NA = noxious aquatic 

Q = quarantine 

QW = temporary, pending final determination 

Ratings (Federal): 

NW = noxious weed 

SOURCES 

California Department of Food and Agriculture. 2003. Pest 

ratings of noxious weed species and noxious weed seeds. 

Available at: 

www.cdfa.ca.gov/phpps/ipc/weedinfo_list-pestrating.htm 

Cal-IPC. 2006. California invasive plant inventory. Cal-IPC 

Publ. 2006-02. California Invasive Plant Council. Berkeley, 

CA. Available at www.cal-ipc.org 

DiTomaso, J. M. & E. A. Healy. 2007. Weeds of California 

and other western states. Publ. 3488. Agriculture & Natural 

Resources. Univ. California. Oakland. Two vols. 1807 pp. 

Plant Protection and Quarantine. 2006. Federal noxious 

weed list. Available at: 

www.aphis.usda.gov/ppq/weeds/weedlist2006.pdf 

WSSA 2005. Composite list of weeds. Weed Science Soc. 

America. www.wssa.net 

-158-

LIST 7: SYNONYMS & TRANSFERS 

FAMILY SYNONYMY 

Adiantaceae --> Pteridaceae 

Adoxaceae --> Caprifoliaceae 

Agavaceae --> Liliaceae 

Alliaceae --> Liliaceae 

Amaryllidaceae --> Liliaceae 

Antirrhinaceae --> Scrophulariaceae 

Apiaceae --> Umbelliferae 

Araceae (in part) –> Lemnaceae 

Araliaceae (in part) –> Hydrocotylaceae 

Asclepiadaceae --> Apocynaceae 

Asparagaceae --> Liliaceae 

Asphodelaceae --> Liliaceae 

Aspidiaceae (in part) --> Dryopteridaceae 

Aspidiaceae (in part) --> Thelypteridaceae 

Asteraceae --> Compositae 

Athyriaceae --> Dryopteridaceae 

Brassicaceae --> Cruciferae 

Buddlejaceae --> Scrophulariaceae 

Cabombaceae --> Nymphaeaceae 

Caesalpiniaceae --> Leguminosae 

Caprifoliaceae (in part) –> Linnaeaceae 

Fabaceae --> Leguminosae 

Hippocastanaceae --> Sapindaceae 

Hippuridaceae --> Scrophulariaceae 

Hyacinthaceae --> Liliaceae 

Lamiaceae --> Labiatae 

Laxmanniaceae --> Liliaceae 

Lemnaceae --> Araceae 

Lilaeaceae --> Juncaginaceae 

Loranthaceae --> Santalaceae 

Melanthiaceae --> Liliaceae 

Mimosaceae --> Leguminosae 

Monotropaceae --> Ericaceae 

Montiaceae --> Portulacaceae 

Myrsinaceae --> Primulaceae 

Najadaceae --> Hydrocharitaceae 

Nartheciaceae --> Liliaceae 

Orobanchaceae --> Scrophulariaceae 

Pedaliaceae --> Martyniaceae 

Philadelphaceae --> Hydrangeaceae 

Phrymaceae --> Scrophulariaceae 

Scrophulariaceae (in part) –> Callitrichaceae 

Scrophulariaceae (in part) –> Hippuridaceae 

Scrophulariaceae (in part) –> Scrophulariaceae 

Poaceae --> Gramineae 

Polypodiaceae (in part) --> Aspleniaceae 

Polypodiaceae (in part) --> Blechnaceae 

Polypodiaceae (in part) --> Dryopteridaceae 

Polypodiaceae (in part) --> Pteridaceae 

Pyrolaceae --> Ericaceae 

Santalaceae (in part) --> Comandraceae 

Santalaceae (in part) --> Viscaceae 

Sapindaceae (in part) –> Aceraceae 

Sapindaceae (in part) –> Hippocastanaceae 

-159- 

Scheuchzeriaceae --> Juncaginaceae 

Sterculiaceae --> Malvaceae 

Taxodiaceae --> Cupressaceae 

Themidaceae --> Liliaceae 

Tofieldiaceae --> Liliaceae 

Trilliaceae --> Liliaceae 

Umbelliferae (in part) –> Hydrocotylaceae 

Veronicaceae --> Scrophulariaceae 

Xanthorrheaceae --> Liliaceae 

Zannichelliaceae --> Potamogetonaceae 

FERNS & ALLIES 

Adiantum pedatum ssp. aleuticum --> A. a. 

Athyrium alpestre var. americanum --> A. 

distentifolium 

Athyrium americanum --> A. distentifolium 

Cryptograma crispa var. acrostichoides --> C. a. 

Dryopteris austriaca --> D. expansa 

Dryopteris dilatata --> D. expansa 

Equisetum funstonii --> E. leavigatum 

Equisetum kansanum --> E. laevigatum 

Isoëtes muricata --> I. echinospora 

Lastrea oregana --> Thelypteris nevadensis 

Lycopodium indundatum --> Lycopodiella I. 

Marsilea mucronata --> M. vestita 

Onychium densum --> Aspidotis d. 

Ophioglossum vulgatum --> O. pusillum 

Pityrogramma triangularis --> Pentagramma t. ssp. t. 

Selaginella densa var. scopulorum --> S. s. 

Selaginella engelmannii var. scopulorum --> S. s. 

CONIFERS 

Abies lowiana --> A. concolor var. l. 

Callitropsis bakeri --> Hesperocyparis b. 

Callitropsis goveniana 

ssp. pigmaea --> Hesperocyparis p. 

var. pygmaea --> Hesperocyparis p. 

Callitropsis lawsoniana --> Chamaecyparis l. 

Callitropsis macnabiana --> Hesperocyparis m. 

Callitropsis macrocarpa --> Hesperocyparis m. 

Callitropsis nootkatensis --> Callitropsis n. 

Callitropsis pigmaea --> Hesperocyparis pygmaea 

Callitropsis sargentii --> Hesperocyparis s. 

Chamaecyparis nootkatensis --> Callitropsis n. 

Cupressus bakeri 

ssp. bakeri --> Callitropis b. 

ssp. matthewsii --> Hesperocyparis b. 

Cupressus goveniana 

ssp. pigmaea --> Hesperocyparis p. 


Cupressus lawsoniana --> Chamaecyparis l. 

Cupressus macnabiana --> Hesperocyparis m. 

Cupressus macrocarpa --> Hesperocyparis m.

Cupressus nootkatensis --> Callitropsis n. 

Cupressus pigmaea --> Hesperocyparis p. 

Cupressus sargentii --> Hesperocyparis s. 

Libocedrus decurrens --> Calocedrus d. 

Neocupressus bakeri --> Hesperocyparis b. 

Neocupressus goveniana 

var. abramsiana --> Hesperocyparis a. 

var. goveniana --> Hesperocyparis g. 


Neocupressus macnabiana --> Hesperocyparis m. 

Neocupressus macrocarpa --> Hesperocyparis m. 

Neocupressus sargentii --> Hesperocyparis s. 

Xanthocyparis nootkatensis --> Callitropsis n. 


ACERACEAE 

Acer glabrum var. siskiyouense --> A. glabrum var. 

torreyi 

ACORACEAE 

Acorus americanus --> A. calamus 

AIZOACEAE 

Carpobrotus aequilaterus --> C. chilensis 

Mesembryanthemum chilense --> Carpobrotus c. 

Mesembryanthemum edule --> Carpobrotus e. 

Mesembryanthemum floribundum --> Drosanthemum 

f. 

ALISMATACEAE 

Machaerocarpus californicus --> Damasonium c. 

AMARANTHACEAE 

Atriplex triangularis --> A. prostrata 

Chenopodium ambrosioides 

var. vagans --> Dysphania a. 

var. anthelmintica --> Dysphania 

anthelmintica 

Chenopodium anthelmintica --> Dysphania a. 

Chenopodium botryodes --> C. chenopodioides 

Chenopodium botrys --> Dysphania b. 

Chenopodium humile --> C. rubrum 

Chenopodium incognitum --> C. hians 

Chenopodium multifidum --> Dysphania m. 

Chenopodium pumilio --> Dysphania p. 

Salicornia pacifica --> Sarcocornia p. 

Salicornia virginica (misapplication) --> S. depressa 

Salsola australis --> S. tragus 

Salsola iberica --> S. tragus 

Salsola kali 

ssp. tenuifolia --> S. tragus 

ssp. tragus --> S. t. 

Salsola pestifer --> S. tragus 

ANACARDIACEAE 

-160- 

Rhus diversiloba --> Toxicodendron d. 

Rhus trilobata 

var. pilosissima --> R. aromatica var. trilobata 

var. quinata --> R. aromatica var. trilobata 

var. malacophylla --> R. aromatica var. 

trilobata 

Toxicodendron radicans ssp. diversilobum --> T. d. 

APOCYNACEAE 

Apocynum medium --> A. androsaemifolium 

Apocynum pumilum --> A. androsaemifolium 

Apocynum sibiricum --> A. cannabinum 

ARACEAE 

Acorus --> Acoraceae 

Lemna minima --> L. minuta 

Lemna minuscula --> L. minuta 

Spirodela oligorrhiza --> Landoltia punctata 

Spirodela punctata --> Landoltia p. 

BALSAMINACEAE 

Impatiens occidentalis --> I. nolitangere 

BERBERIDACEAE 

Berberis aquifolium var. aquifolium --> Mahonia a. 

var. dictyota --> Mahonia d. 

var. repens --> Mahonia r. 

Berberis dictyota --> Mahonia d. 

Berberis nervosa 

var. mendocinensis --> Mahonia n. var. m. 

var. nervosa --> Mahonia n. var. n. 

Berberis pinnata --> Mahonia p. 

Berberis piperiana --> Mahonia p. 

Berberis pumila --> Mahonia p. 

Berberis repens --> Mahonia r. 

BETULACEAE 

Alnus oregana --> A. rubra 

Alnus tenuifolia --> A. incana ssp. t. 

Corylus californica --> C. cornuta ssp. californica 

BORAGINACEAE 

Allocarya bracteata --> Plagiobothrys b. 

Allocarya californica --> Plagiobothrys c. 

Allocarya chorisana --> Plagiobothrys c. 

Allocarya hispidula --> Plagiobothrys h. 

Allocarya reticulata --> Plagiobothrys r. var. r. 

Allocarya undulata --> Plagiobothrys u. 

Amsinckia gloriosa --> A. tessellata var. g. 

Cryptantha hendersonii --> C. intermedia 

Cryptantha subretusa --> C. sobolifera 

Hackelia jessicae --> H. micrantha 

Myosotis micrantha --> M. stricta 

Myosotis sylvatica (of California authors) --> M. latifolia 

Myosotis versicolor --> M. discolor

Myosotis virginica --> M. verna 

Plagiobothrys californicus --> P. collinus var. 

californicus 

Plagiobothrys cognatus --> P. scouleri var. hispidulus 

Plagiobothrys hispidulus --> P. scouleri var. h. 

CALLITRICHACEAE 

Callitriche longipedunculata --> C. marginata 

Callitriche verna --> C. palustris 

CAMPANULACEAE 

Campanula prenanthoides --> Asyneuma p. 

CAPRIFOLIACEAE 

Centranthus --> Valerianaceae 

Dipsacus --> Dipsacaceae 

Linnaea --> Linnaeaceae 

Plectritis --> Valerianaceae 

Sambucus caerulea 

var. caerulea --> S. nigra ssp. caerulea 

var. velutina --> S. nigra ssp. caerulea 

Sambucus callicarpa --> S. racemosa var. racemosa 

Sambucus canadensis --> S. nigra ssp. c. 

Sambucus melanocarpa --> S. racemosa var. racemosa 

Sambucus mexicana --> S. nigra 

ssp. canadensis 

ssp. caerulea 

Sambucus melanocarpa --> S. racemosa var. racemosa 

Sambucus microbotrys --> S. racemosa var. racemosa 

Sambucus racemosa 

var. arborescens --> S. r. var. r. 

var. melanocarpa --> S. r. var. r. 

var. microbotrys --> S. r. var. r. 

Scabiosa --> Dipsacaceae 

Symphoricarpos acutus --> S. mollis var. a. 

Symphoricarpos hesperius --> S. mollis var. h. 

Symphoricarpos vaccinioides --> S. rotundifolius var. r. 

Valeriana --> Valerianaceae 

Valerianella --> Valerianaceae 


Arenaria californica --> Minuartia c. 

Arenaria congesta 

var. congesta --> Eremogone c. var. c. 

var. crassula --> Eremogone var. c. var. c. 

var. suffrutescens --> Eremogone c. var. s. 

Arenaria douglasii --> Minuartia d. 

Arenaria howellii --> Minuartia h. 

Arenaria jamesiana --> Pseudostellaria j. 

Arenaria macrophylla --> Moehringia m. 

Arenaria nuttallii --> Minuartia n. 

Arenaria nuttallii var. gregaria --> Minuartia n. ssp. g. 

Arenaria pusilla --> Minuartia p. 

Arenaria rosei --> Minuartia r. 

Arenaria rubella --> Minuartia r. 

-161- 

Cerastium fontanum ssp. triviale --> C. f. ss. vulgare 

Cerastium viscosum --> C. glomeratum 

Cerastium vulgatum --> C. fontanum ssp. vulgare 

Herniaria cinerea --> H. hirsuta ssp. c. 

Lychnis coronaria --> Silene c. 

Petrorhagia velutina --> P. dubia 

Sagina apetala var. barbata --> S. a. 

Sagina crassicaulis --> S. maxima ssp. c. 

Sagina occidentalis --> S. decumbens ssp. o. 

Sagina saginoides 

var. hesperia --> S. s. 

var. maguirei --> S. b. 

Silene bernardina var. rigidula --> S. b. 

Silene californica --> S. laciniata ssp. c. 

Silene cucubalus --> S. vulgaris 

Silene douglasii var. monantha --> S. d. var. d. 

Silene hookeri 

ssp. bolanderi --> S. b. 

ssp. pulverulenta (of California authors) --> S. h. 

Silene latifolia ssp. alba --> S. l. 

Silene menziesii var. viscosa --> S. m. 

Silene montana --> S. bernardina 

Silene pulverulenta --> S. hookeri 

Silene scouleri ssp. grandis --> S. s. 

Silene verecunda var. platyota --> S. v. 

Spergularia bocconei --> S. bocconi 

Spergularia marina --> S. salina 

Stellaria jamesiana --> Pseudostellaria j. 

Stellaria sitchana --> S. calycantha 

Tunica prolifera --> Petrorhagia p. 

Tunica velutina --> Petrorhagia dubia 

COMPOSITAE 

Achillea borealis --> A. millefolium 

ssp. arenicola --> A. millefolium 

spp. lanulosa --> A. millefolium 

Achillea lanulosa --> A. millefolium 

Achillea millefolium 

var. alpicola --> A. m. 

var. arenicola --> A. m. 

var. borealis --> A. m. 

var. californica --> A. m. 

var. lanulosa --> A. m. 

var. occidentalis --> A. m. 

var. pacifica --> A. m. 

Agoseris maritima --> A. apargioides var. maritima 

Amb chamissonis ssp. binpinnatisecta --> A. c. 

Antennaria alpina var. media --> A. m. 

Antennaria microcephala --> A. luzuloides ssp. l. 

Antennaria neglecta var. howellii --> A. howellii ssp. h. 

Antennaria neodioica ssp. howellii --> A. h. ssp. h. 

Anthemis fuscata --> Chamaemulum f. 

Anthemis nobilis --> Chamaemulum n. 

Arnica x diversifolia --> A. ovata 

Arnica tomentella --> A. nevadensis

Artemisia arctica ssp. arctica --> A. norvegica ssp. 

saxatilis 

Aster eatonii --> Symphyotrichum e. 

Aster engelmannii --> Eucephalus e. 

Aster foliaceus 

Aster alpigenus ssp. andersonii --> Oreostemma a. ssp. 

a. 

Aster ascendens --> Symphyotrichum a. 

Aster breweri --> Eucephalus b. 

Aster brickellioides 

var. brickelloides --> Eucephalus b. 

var. glabratus --> Eucephalus g. 

Aster chilensis 

var. ascendens --> Eucephalus a. 

var. chilensis --> Symphyotrichum c. var. c. 

var. apricus --> Symphyotrichum f. var. a. 

var. foliaceus --> Symphyotrichum f. var. f. 

var. lyallii --> Symphyotrichum hendersonii 

var. parryi --> Symphyotrichum f. var. p. 

Aster laevis var. geyeri --> Symphyotrichum l. var. g. 

Aster ledophyllus --> Eucephalus l. 

Aster novae-angliae --> Symphyotrichum n.-a. 

Aster occidentalis 

var. intermedius --> Symphyotrichum 

spathulatum var. i. 

var. occidentalis --> Symphyotrichum 

spathulatum 

var. yosemitanus --> S. spathulatum var. y. 

var. oregonensis --> Sericocarpus o. var. o. 

Aster paludicola --> 

Symphyotrichum spathulatum var. 

yosemitanum 

Aster radulinus --> Eurybia r. 

Aster siskiyouense --> Eucephalus glabratus 

Aster subspicatus --> Symphyotrichum s. 

Aster vialis --> Eucephalus v. 

Baccharis viminea --> B. salicifolia 

Baeria bakeri --> Lasthenia californica ssp. b. 

Baeria californica --> Lasthenia c. 

Baeria fremontii --> Lasthenia f. 

Baeria macrantha 

var. bakeri --> Lasthenia californica ssp. b. 

var. macrantha --> Lasthenia californica var. m. 

Baeria maritima --> Lasthenia m. 

Baeria microglossa --> Lasthenia m. 

Baeria minor --> Lasthenia m. 

Balsamita major --> Tanacetum balsamita 

Balsamorhiza hookeri var. lanata --> B. l. 

Calycadenia ciliosa --> C. fremontii 

Calycadenia elegans --> C. fremontii 

Carthamus baeticus --> C. creticus 

Centaurea x debeauxii ssp. thuillieri --> C. jacea 

Centaurea maculosa --> C. stroebe ssp. micranthos 

Centaurea x pratensis --> C. jacea 

Centaurea repens --> Acroptilon r. 

-162- 

Centaurea squarrosa --> C. virgata ssp. s. 

Chaenactis alpina --> C. douglasii var. a 

Chaen glabriuscula var. gracilenta --> Ch. g. var. 

heterocarpha 

Chaetopappa alsinoides --> Pentachaeta a. 

Chaetopappa exilis --> Pentachaeta e. 

Chamomilla occidentalis --> Matricaria o. 

Chamomilla suaveolens --> Matricaria discoidea 

Chrysanthemum balsamita --> Tanacetum b. 

Chrysanthemum coronarium --> Glebionis c. 

Chrysanthemum leucanthemum --> Leucanthemum 

vulgare 

Chrysanthemum maximum --> Leucanthemum m. 

Chrysanthemum segetum --> Glebionis s. 

Chrysopsis bolanderi --> Heterotheca b. 

Chrysopsis breweri 

var. breweri --> Eucephalus b. 

var. multibracteata --> Eucephalus b. 

Chrysopsis oregona --> Heterotheca villosa var. v. 

Chrysopsis villosa var. bolanderi --> Heterotheca b. 

Chrysothamnus nauseosus ssp. albicaulis --> 

Ericameria n. ssp. speciosa 

Chrysothamnus parryi ssp. latior --> Ericameria p. ssp. l. 

Cirsium breweri --> C. douglasii var. b. 

Cirsium californicum var. c. --> C. occidentale var. c. 

Cirsium callipes 

var. callipes --> C. remotifolium 

var. pseudocarlinoides --> C. remotifolium 

Cirsium coulteri --> C. occidentale 

Cirsium douglasii var. canescens --> C. d. var. breweri 

Cirsium drummondii --> C. scariosum 

Cirsium mendocinum --> C. remotifolium var. 

odontolepis 

Cirsium pastoris --> C. occidentale var. candidissimum 

Cirsium proteanum --> C. occidentale var. venustum 

Cnicus benedictus --> Centaurea b 

Corethrogyne californica var. obovata --> 

C. filaginifolia var. c. 

Cynara scolymus --> C. cardunculus ssp. c. 

Dugaldia hoopesii --> Hymenoxys h. 

Erechtites argutus --> E. glomerata 

Erechtites prenanthoides --> E. minima 

Erigeron acris var. debilis --> E. nivalis 

Erigeron angustatus --> E. greenei 

Erigeron bloomeri var. pubens --> E. b. var. b. 

Erigeron breweri var. klamathensis --> E. k. 

Erigeron debilis --> E. acris var. d. 

Erigeron decumbens var. robustior --> E. r. 

Erigeron delicatus --> E. cervinus 

Erigeron filifolius var. robustior --> E. f. 

Erigeron flexuosus --> E. lassenianus var. l. 

Erigeron inornatus var. angustatus --> E. reductus var. 

a. 

Erigeron peregrinus 

ssp. angustifolius --> E. glacialis var. g.

ssp. callianthemus --> E. glacialis var. g. 

Eucephalus brickellioides --> Eu. tomentellus 

Eupatorium occidentale --> Ageratina o. 

Eupatorium shastense --> Ageratina s. 

Evax acaulis --> Hesperevax a. 

Evax sparsiflora var. brevifolia --> Hesperevax s. 

var. sparsiflora --> Hesperevax s. 

Filago californica --> Logfia c. 

Filago gallica --> Logfia g. 

Filago germanica --> F. pyramidata 

Filago vulgaris --> F. pyramidata var. p. 

Franseria chamissonis --> Ambrosia c. 

Gamochaeta purpurea --> G. ustulata 

Gamochaeta spicata --> G. coarctata 

Gnaphalium californicum --> Pseudognaphalium c. 

Gnaphalium canescens 

ssp. canescens --> Pseudognaphalium c. ssp. 

c. 

ssp. thermale --> Pseudognaphalium c. ssp. t. 

Gnaphalium chilense --> Pseudognaphalium 

stramineum 

Gnaphalium collinum --> Euchiton gymnocephalus 

Gnaphalium involucratus --> Euchiton i. 

Gnaphalium japonicum --> Euchiton j. 

Gnaphalium luteoalbum --> Pseudognaphalium l. 

Gnaphalium macounii --> Pseudognaphalium m. 

Gnaphalium microcephalum var. thermale --> 

Pseudognaphalium canescens var. t. 

Gnaphalium purpureum --> Gamochaeta p. 

Gnaphalium ramosissimum --> Pseudognaphalium r. 

Gnaphalium stramineum --> Pseudognaphalium s. 

Gnaphalium thermale --> 

Pseudognaphalium canescens ssp. t. 

Grindelia camporum var. camporum --> G. hirsutula 

Grindelia hirsutula var. davyi --> G. h. 

Grindelia nana var. nana --> G. hirsutula 

Grindelia stricta 

var. blakei --> G. hirsutula 

var. platyphylla --> G. hirsutula 

var. stricta --> G. hirsutula 

var. venulosa --> G. hirsutula 

Haplopappus apargioides --> Pyrrocoma a. 

Haplopappus arborescens --> Ericameria a. 

Haplopappus bloomeri --> Ericameria b. 

Haplopappus ciliata --> Grindelia c. 

Haplopappus greenei --> Ericameria g. 

Haplopappus lanceolatus --> Pyrrocoma l. 

Haplopappus linearifolia --> Ericameria l. 

Haplopappus lyallii --> Tonestus l. 

Haplopappus ophitidis --> Ericameria o. 

Haplopappus racemosus --> Pyrrocoma r. 

Haplopappus whitneyi var. discoideus --> Hazardia w. 

var. d. 

Helenium dugaldii --> Hymenoxys hoopesii 

Helenium hoopesi --> Hymenoxys h. 

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Hemizonia calyculata --> H. congesta ssp. c. 

Hemizonia clevelandii --> H. congesta spp. c. 

Hemizonia corymbosa --> Deinandra c. 

Hemizonia fitchii --> Centromadia f. 

Hemizonia kelloggii --> Deinandra k. 

Hemizonia leucocephala --> H. congesta ssp. l. 

Hemizonia lutescens --> H. congesta ssp. c. 

Hemizonia luzulifolia ssp. rudis --> H. congesta ssp. l. 

Hemizonia parryi --> Centromadia p. 

Hemizonia congesta ssp. rudis --> Centromadia p. 

Hemizonia pungens --> Centromadia p. ssp. p. 

Hemizonia tracyi --> H. congesta ssp. t. 

Heterotheca bolanderi --> H. sessiliflora ssp. b. 

Heterotheca breweri --> Eucephalus b. 

Hieracium cynoglossoides 

var. cynoglossoides --> H. scouleri var. s. 

var. nudicaule --> H. scouleri var. n. 

Hieracium gracile --> H. triste 

Hieracium scouleri var. nudicaule --> H. n. 

Iva axillaris ssp. robustior --> I. a. 

Lactuca serriola var. integrata --> L. s. 

Lagophylla congesta --> L. ramosissima 

Lagophylla glandulosa ssp. serrata --> L. g. 

Lagophylla ramosissima ssp. congesta --> L. r. 

Lasthenia chrysostoma --> L. californica 

Lasthenia macrantha 

ssp. bakeri --> L. californica ssp. b. 

ssp. macrantha --> L. californica ssp. m. 

ssp. microglossa --> L. californica ssp. m. 

var. pauciaristata --> L. californica ssp. m. 

Lasthenia minor ssp. maritima --> L. maritima 

Layia chrysanthemoides ssp. maritima --> L. c. ssp. c. 

Layia platyglossa ssp. campestris --> L. p 

Leontodon leysseri --> L. taraxacoides ssp. t. 

Leontodon nudicaulis --> L. taraxacoides ssp. t. 

Leontodon taraxacoides ssp. longirostris --> L. saxatilis 

ssp. l. 

Lessingia filaginifolia var. californica --> 

Corethrogyne f. var. c. 

Lessingia nemaclada var. mendocina --> L. n. 

Logfia californica --> L. filaginoides 

Machaeranthera canescens 

var. eradiata --> Dieteria c. var. shastensis 

var. glossophylla --> Dieteria c. var. shastensis 

var. shastensis --> Dieteria c. var. s. 

Machaeranthera shastensis 

var. eradiata --> Dieteria canescens var. s. 

var. shastensis --> Dieteria canescens var. s. 

Madia bolanderi --> Kyhosia b. 

Madia capitata --> M. sativa 

Madia doris-nilesiae --> Harmonia d.-n. 

Madia elegans 

ssp. densifolia --> M. e. 

ssp. vernalis --> M. e. 

Madia gracilis ssp. pilosa --> M. g

Madia hallii --> Harmonia h. 

Madia madioides --> Anisocarpus m. 

Madia minima --> Hemizonella m. 

Madia stebbinsii --> Harmonia s. 

Matricaria matricarioides --> M. discoidea 

Microseris alpestris --> Nothocalais a. 

Microseris lindleyi --> Stebbinsoseris heterocarpa 

Microseris troximoides --> Nothocalais t. 

Petasites palmatus --> P. frigidus var. p. 

Picris echioides --> Helminthotheca e. 

Pseudognaphalium canescens 

ssp. thermale --> Ps. th. 

ssp. microcephalum --> Ps. m. 

Raillardella scabrida --> Anisocarpus s. 

Raillardiopsis scabrida --> Anisocarpus s. 

Rudbeckia californica 

var. glauca --> R. glaucescens 

var. intermedia --> R. klamathensis 

Senecio bolanderi var. bolanderi --> Packera b. 

Senecio canus --> Packera c. 

Senecio clevelandii --> Packera c. 

Senecio cymbalarioides --> Packera streptanthifolia 

Senecio douglasii --> S. flaccidus var. d. 

Senecio eurycephalus --> Packera e. 

Senecio foetidus var. foetidus --> S. hydrophiloides 

Senecio greenei --> Packera g. 

Senecio longifolius --> Packera macounii 

Senecio macounii --> Packera m. 

Senecio mikanoides --> Delairea odorata 

Solidago californica --> S. velutina ssp. c. 

Solidago canadensis 

ssp. elongata --> S. lepida var. salebrosa 

var. salebrosa --> S. lepida var. s. 

Soliva daucifolia --> S. sessilis 

Stylocline amphibola --> Micropus a. 

Stylocline filaginea --> Ancistrocarphus f. 

Symphyotrichum chilense var. invenustum --> S. c. 

Tanacetum camphoratum --> T. bipinnatum 

Tanacetum douglasii --> T. bipinnatum 

Taraxacum laevigatum --> T. erythrospermum 

Tolpis umbellata --> T. barbata 

Trimorpha acris var. debilis --> Erigeron nivalis 

Tripleurospermum inodorum --> T. perforatum 

Whitneya dealbata --> Arnica d. 

Wyethia bolanderi --> Agnorhiza b. 

Xanthium strumarium var. canadense --> X. s. 


Calystegia fulcrata var. malacophylla --> C. m. ssp. m. 

Calystegia macrostegia --> C. collina ssp. tridactylosa 

Calystegia nyctagineus --> C. atriplicifolia ssp. buttensis 

Calystegia occidentalis ssp. solanensis --> C. purpurata 

ssp. p. 

Calystegia polymorpha --> C. occidentalis ssp. o. 

Calystegia purpurata ssp. solanensis --> C. p. ssp. p. 

-164- 

Convolvulus limnophila --> Calystegia sepium ssp. l. 

Convolvulus nyctagineus --> Calystegia atriplicifolia 

ssp. a. 

Convolvulus occidentalis --> Calystegia o. ssp. o. 

Convolvulus soldanella --> Calystegia s. 

Convolvulus subacaulis --> Calystegia s. 

Convolvulus tridactylosa --> Calystegia collina ssp. t. 

Cressa depressa --> C. truxillensis 

Cressa truxillensis var. vallicola --> C. t. 

Cuscuta approximata var. urceolata --> C. a. 

Cuscuta campestris --> C. pentagona 

Cuscuta occidentalis --> C. californica var. breviflora 

Cuscuta subinclusa --> C. ceanothii 

Cuscuta suksdorfii var. subpedicellata --> 

C. californica var. breviflora 

CORNACEAE 

Cornus californica --> C. sericea ssp. s. 

Cornus occidentalis --> C. sericea ssp. o. 

Cornus stolonifera --> C. sericea ssp. s. 

CRASSULACEAE 

Crassula erecta --> C. connata var. c. 

Parvisedum leiocarpum--> Sedella l. 

Parvisedum pentandrum --> Sedella p. 

Parvisedum pumilum --> Sedella p. 

Sedum integrifolium ssp. integrifolium --> Rhodiola i. 

ssp. i. 

Sedum laxum ssp. eastwoodiae --> S. e. 

Sedum laxum ssp. latifolium --> S. laxum ssp. l. 

Sedum obtusatum ssp. paradisum --> S. p. 

Sedum radiatum ssp. depauperatum --> S. r. ssp. r. 

Sedum roseum ssp. integrifolium --> Rhodiola i. ssp. i. 

Sedum spathulifolium 

ssp. pruinosum --> S. s. 

ssp. purdyi --> S. s. 

Sedum stenopetalum ssp. monanthum --> S. s. ssp. s.\ 

CROSSOSOMATACEAE 

Forsellesia stipulifera --> Glossopetalon spinescens var. 

aridum 

CRUCIFERAE 

Arabis x divaricarpa A. Nelson var. interposita --> A. d. 

Arabis glabra var. glabra --> Turritis g. var. g. 

Arabis pycnocarpa --> A. hirsuta var. p. 

Arabis serpentinicola --> A. macdonaldiana 

Arabis virginica --> Planodes v. 

Barbarea orthoceras var. dolichocarpa --> B. o. 

Boechera breweri ssp. breweri --> Arabis b. ssp. b. 

Boechera divaricarpa --> Arabis d. 

Boechera holboellii var. pinetorum --> Arabis h. var. p. 

Boechera koehleri --> Arabis k. 

Boechera lyallii --> Arabis l. 

Boechera puberula --> Arabis p.

Boechera repanda --> Arabis r. 

Boechera rigidissima --> Arabis r. 

Boechera rollei --> Arabis r. 

Boechera sparsiflora var. subvillosa --> Arabis s. var. s. 

Boechera subpinnatifida --> Arabis s. 

Boechera suffrutescens --> Arabis s. 

Brassica campestris --> B. rapa 

Brassica geniculata --> Hirschfeldia incana 

Brassica hirta --> Sinapis alba 

Brassica kaber --> Sinapis arvensis 

Brassica rapa var. olifera --> B. r 

Cakile edentula ssp. californica --> C. e. 

Camelina sativa --> C. microcarpa 

Cardamine californica var. pachystigma --> C. p. 

Cardamine cardiophylla --> C. californica var. 

cardiophylla 

Cardamine gemmata --> C. nuttallii var. g. 

Cardamine integrifolia var. sinuata --> C. californica var. 

s. 

Cardamine lyallii --> C. cordifolia var. l. 

Cardamine virginica --> Planodes v. 

Cardaria pubescens var. elongata --> C. p. 

Caulanthus lasiophyllus --> Guillenia l. 

Cochlearia groenlandica --> C. officinalis var. arctica 

Dentaria californica 

var. californica --> Cardamine c. var. c. 

var. cardiophylla --> Cardamine c. var. 

cardiophylla 

var. sinuata --> Cardamine c. var. s. 

Dentaria californica var. integrifolia --> Cardamine c. 

var. i. 

Dentaria gemmata --> Cardamine nuttallii var. g. 

Dentaria pachystigma --> Cardamine p. 

Descurainia richardsonii 

ssp. richardsonii --> D. incana ssp. i. 

ssp. viscosa --> D. incana spp. v. 

Draba douglasii var. crockeri --> Cusickiella d. 

Draba howellii var. carnosula --> D. c. 

Draba stenoloba var. nana --> D. albertina 

Erophila verna --> Draba v. 

Erysimum menziesii 

ssp. concinnum: name never published 

ssp. eurekense: name never published 

Erysimum perenne --> E. capitatum ssp. p. 

Hutchinsia procumbens --> Hornungia p. 

Hymenolobus procumbens --> Hornungia p. 

Lesquerella occidentalis ssp. occidentalis --> 

Physaria o. ssp. o. 

Rorippa calycina var. columbiae --> R. c. 

Rorippa islandica var. occidentalis --> R. palustris var. o. 

Rorippa truncata --> R. curvipes var. t. 

Sibara virginica --> Planodes v. 

Sinapis incana --> Hirschfeldia I. 

Streptanthus tortuosus var. pallidus --> S. t. var. t. 

Thelypodium lasiophyllum --> Guillenia l. 

-165- 

Thlaspi fendleri 

var. fendleri --> Noccaea f. 

var. hesperium --> Noccaea f. 

Thlaspi glaucum --> Noccaea montana ssp. m. 

Thlaspi montanum 

var. californicum --> Noccaea fendleri ssp. c. 

var. montanum --> Noccaea m. var. m. 

CYPERACEAE 

Carex angustior --> C. echinata ssp. e. 

Carex breviligulata --> C. densa 

Carex brevipes --> C. rossii 

Carex eurycarpa --> C. angustata 

Carex exsiccata --> C. versicaria var. major 

Carex festivella --> C. microptera 

Carex gigas --> C. scabriuscula 

Carex gymnoclada --> C. scopulorum var. bracteosa 

Carex hindsii --> C. lenticularis var. limnophila 

Carex jepsonii --> C. whitneyi 

Carex kelloggii --> C. lenticularis var. lipocarpa 

Carex leptopoda --> C. deweyana ssp. l. 

Carex ormantha --> C. echinata ssp. e. 

Carex paucicostata --> C. lenticularis var. impressa 

Carex phyllomanica --> C. echinata ssp. ph. 

Carex scirpoidea var. gigas --> C. scabriuscula 

Carex sitchensis --> C. aquatilis var. dives 

Carex teneraeformis --> C. subfusca 

Carex tracyi --> C. ovalis 

Carex vicaria --> C. densa 

Cyperus aristatus --> C. squarrosus 

Cyperus niger var. capitatus --> C. n. 

Cyperus niger var. rivularis --> C. r. 

Cyperus rivularis --> C. bipartitus 

Eleocharis acicularis var. bella --> E. b. 

Eleocharis acicularis var. radicans --> E. r. 

Eleocharis montevidensis 

var. decumbens --> E. d. 

var. parishii --> E. p. 

Eleocharis obtusa var. engelmannii --> E. e. 

Eleocharis pauciflora 

var. pauciflora --> E. quinqueflora 

var. suksdorfiana --> E. s. 

Eriophorum criniger --> E. crinigerum 

Fimbristylis capillaris --> Bulbostylis c. 

Heleocharis --> Eleocharis 

Hemicarpha drummondii --> Lipocarpha d. 

Hemicarpha micrantha var. aristulata --> Lipocarpha a. 

Hemicarpha occidentalis --> Lipocarpha o. 

Rhynchospora glomerata 

var. capitellata --> R. c. 

var. minor --> R. capitellata 

Schoenoplectus fluviatilis --> Bolboschoenus f. 

Schoenoplectus maritimus --> Bolboschoenus m. 

Schoenoplectus robustus --> Bolboschoenus r.

Scirpus acutus var. occidentalis --> Schoenoplectus a. 

var. o. 

Scirpus americanus 

var. americanus --> Schoenoplectus a. 

var. monophyllus --> Schoenoplectus a. 

Scirpus californicus ssp. californicus --> Schoenoplectus 

c. 

Scirpus cernuus 

ssp. californicus --> Isolepis cernua 

ssp. cernuus --> Isolepis c. 

Scirpus criniger --> Eriophorum crinigerum 

Scirpus koilolepis --> Isolepis carinata 

Scirpus maritimus var. paludosus --> Bolboschoenus m. 

Scirpus mucronatus --> Schoenoplectus m. 

Scirpus olneyi --> Schoenoplectus americanus 

Scirpus paludosus --> Bolboschoenus maritimus 

Scirpus pungens --> Schoenoplectus p. 

Scirpus robustus --> Bolboschoenus r. 

Scirpus setaceus --> Isolepis s. 

Scirpus subterminalis --> Schoenoplectus s. 

Scirpus tabernaemontani --> Schoenoplectus t. 

Scirpus tuberosus --> Schoenoplectus t. 

Scirpus validus --> Schoenoplectus tabernaemontani 

DIPSACACEAE 

Dipsacus fullonum var. sylvestris --> D. f. 

Dipsacus sylvestris --> D. fullonum 

ELATINACEAE 

Elatine obovata --> E. brachysperma 

ERICACEAE 

Arctostaphylos candidissima --> A. canescens ssp. 

canescens 

Arctostaphylos canescens var. malloryi --> A. m. 

Arctostaphylos columbiana ssp. nortensis --> A. n. 

Arctostaphylos elegans --> A. manzanita ssp. e. 

Arctostaphylos intricata --> A. glandulosa ssp. g. 

Arctostaphylos knightii --> A. nevadensis ssp. k. 

Arctostaphylos mendocinoensis --> A. nummularia ssp. 

n. 

Arctostaphylos x oblongifolia --> A. x cinerea 

Arctostaphylos patula 

var. coalescens --> A. p. 

var. platyphylla --> A. p. 

Arctostaphylos roofii --> A. manzanita ssp. r. 

Arctostaphylos tracyi --> A. columbiana 

Arctostaphylos uva-ursi ssp. coactilis --> A. u.-u. 

Hypopitys lanuginosa --> Monotropa hypopitys 

Kalmia polifolia ssp. m. --> K. m. ssp. m. 

Ledum columbianum --> Rhododendron c. 

Ledum glandulosum 

ssp. columbianum --> Rhododendron c. 

var. californicum --> Rhododendron 

columbianum 

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Pyrola aphylla --> P. picta 

Pyrola asarifolia ssp. purpurea --> P. a. ssp. a. 

Pyrola bracteata --> P. asarifolia ssp. b. 

Pyrola californica --> P. asarifolia ssp. a. 

Pyrola dentata --> P. picta 

Pyrola picta ssp. integra --> P. p. 

Rhododendron neoglandulosum --> R. columbianum 

Vaccinium arbuscula --> V. caespitosum 

Vaccinium coccineum --> V. membranaceum 

Vaccinium occidentale --> V. uliginosum ssp. o. 

Vaccinium ovatum var. saprosum --> V. o. 

EUPHORBIACEAE 

Chamaesyce glyptosperma --> Euphorbia g. 

Chamaesyce maculata --> Euphorbia m. 

Chamaesyce nutans --> Euphorbia n. 

Chamaesyce ocellata 

ssp. ocellata --> Euphorbia o. ssp. o. 

ssp. rattanii --> Euphorbia o. ssp. r. 

Chamaesyce serpyllifolia ssp. s. --> Euphorbia s. ssp. s. 

Chamaesyce supina --> Euphorbia maculata 

Eremocarpus setigerus --> Croton s. 

FAGACEAE 

Castanopsis chrysophylla --> Chrysolepis c. 

Lithocarpus densiflorus 

var. densiflorus --> Notholithocarpus d. var. d. 

var. echinoides --> Notholithocarpus d. var. e. 

Quercus dumosa (in the traditional sense) --> Q. 

berberidifolia 

Quercus garryana 

var. breweri --> Q. g. var. fruticosa 

var. semota --> Q. g. var. fruticosa 

FRANKENIACEAE 

Frankenia grandifolia --> F. salina 

GARRYACEAE 

Garrya elliptica var. pallida --> G. flavescens 

GENTIANACEAE 

Centaurium davyi --> Zeltnera d. 

Centaurium floribundum --> Zeltnera muehlenbergii 

Centaurium muehlenbergii --> Zeltnera m. 

Centaurium trichanthum --> Zeltnera t. 

Centaurium umbellatum --> C. eryrthraea 

Centaurium venustum var. abramsii --> Zeltnera a. 

Frasera albicaulis var. albicaulis --> Swertia a. var. a. 

Frasera albicaulis var. nitida --> Swertia a. var. n. 

Frasera speciosa --> Swertia radiata 

Frasera umpquaensis --> Swertia fastiigiata 

Gentiana affinis var. ovata --> G. a. 

Gentiana affinis var. parvidentata --> G. a. 

Gentiana amarella --> Gentianella a. 

Gentiana oregana --> G. affinis

Gentiana simplex --> Gentianella s. 

Menyanthes --> Menyanthaceae 

Microcala quadrangularis --> Cicendia q. 

Swertia nitida --> S. albicaulis var. n. 

GERANIACEAE 

Erodium cicutarium ssp. jacquinianum --> E. c. 

Erodium macrophyllum --> California m. 

Erodium obtusiplicatum --> E. brachycarpum 

Geranium bicknellii var. longipes --> G. b. 

GRAMINEAE 

Achnatherum lemmonii --> Stipa l. 

Achnatherum occidentale ssp. californicum --> S. c. 

Achnatherum occidentale ssp. pubescens --> S. o. var. 

p. 

Achnatherum stillmanii --> S. s. 

Aegilops ovata --> Ae. geniculata 

Agropyron arizonica --> Elymus a. 

Agropyron dasystachyum --> Elymus lanceolatus 

Agropyron desertorum --> A. cristatum ssp. d. 

Agropyron intermedium --> Elymus hispidus 

Agropyron repens --> Elymus r. 

Agropyron smithii --> Elymus s. 

Agropyron spicatum --> Elymus s. 

Agropyron trachycaulum --> Elymus t. 

Agropyron trichophorum --> Elymus lanceolatus 

Agrostis alba --> A. stolonifera var. major (in part) 

Agrostis alba --> A. gigantea (in part) 

Agrostis ampla --> A. exarata var. monolepis 

Agrostis californica --> A. densiflora 

Agrostis hiemalis --> A. hyemalis 

Agrostis hallii var. pringlei --> A. h. 

Agrostis inflata --> A. microphylla 

Agrostis longiligula --> A. exarata 

Agrostis longiligula var. australis --> A. exarata 

Agrostis scabra var. geminata --> A. hyemalis 

Agrostis semiverticillata --> Polypogon viridis 

Agrostis stolonifera 

var. major --> A. gigantea 

var. palustris --> A. s. 

Agrostis tenuis --> A. capillaris 

Agrostis viridis --> Polypogon v. 

Aira elegans --> A. caryophyllea var. capillaris 

Aira elegantissima --> A. caryophyllea var. capillaris 

Alopecurus howellii --> A. saccatus 

Alopecurus pallescens --> A. geniculatus 

Arrhenatherum elatius var. bulbosum --> A. e. 

Avena fatua var. sativa --> A. s. 

Bromus berteroanus var. excelsus --> B. arizonicus 

Bromus breviaristatus --> B. carinatus 

Bromus brizaeformis --> B. briziformis 

Bromus carinatus 

var. californicus --> B. carinatus var. carinatus 

var. hookeri --> B. c. var. c. 

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var. maritimus --> B. m. 

Bromus cebadilla --> B. catharticus var. elatus 

Bromus hordeaceus ssp. divaricatus --> B. h. ssp. 

molliformis 

Bromus madritensis --> B. m. ssp. m. 

Bromus marginatus --> B. carinatus var. m. 

Bromus molliformis --> B. hordeaceus ssp. m. 

Bromus mollis --> B. hordeaceus ssp. h. 

Bromus rigidus --> B. diandrus 

Bromus rubens --> B. madritensis ssp. r. 

Bromus stamineus --> B. catharticus var. elatus 

Bromus tectorum var. glabratus --> B. t. 

Bromus trinii --> Bromus berteroanus var. excelsus 

Bromus unioloides --> B. catharticus 

Bromus willdenovii --> B. catharticus 

Calamagrostis canadensis var. lactea --> C. x l. 

Calamagrostis crassiglumis --> C. stricta ssp. inexpansa 

Calamagrostis inexpansa --> C. stricta ssp. i. 

Calamagrostis neglecta --> C. stricta 

Cortaderia atacamensis --> C. jubata 

Cortaderia dioica --> C. selloana 

Crypsis niliaca --> C. vaginiflora 

Danthonia americana --> D. californica 

Danthonia californica var. americana --> D. c. 

Danthonia pilosa --> Rytidosperma penicillatum 

Dichanthelium acuminatum --> Panicum a. 

Dichanthelium oligosanthes var. scribnerianum --> 

Panicum o. var. s. 

Diplachne fascicularis --> Leptochloa fusca ssp. 

fascicularis 

Distichlis spicata 

ssp. stolonifera --> D. spicata 

ssp. stricta --> D. spicata 

Elymus intermedius --> E. virginicus ssp. i. 

Elymus macounii --> X Elyhordeum m. 

Elymus x vancouverensis nothm. californicus --> E. x v. 

X Elysitanion hansenii --> Elymus x h. 

Elytrigia intermedia --> Elymus lanceolatus 

Elytrigia pontica --> Elymus elongatus 

Elytrigia repens --> Elymus r. 

Eragrostis diffusa --> E. pectinata var. p. 

Eragrostis orcuttiana --> E. mexicana ssp. virescens 

Eragrostis poaeoides --> E. minor 

Festuca ammobia --> F. rubra ssp. arenicola 

Festuca brevipila --> F. trachyphylla 

Festuca dertonensis --> F. bromoides 

Festuca elatior --> F. arundinacea 

Festuca howellii --> F. elmeri 

Festuca idahoensis var. roemeri --> F. r. 

Frestuca megalura --> F. myuros 

Festuca myuros var. hirsuta --> F. m. 

Gastridium ventricosum --> G. phleoides 

Glyceria striata var. stricta --> G. striata 

Hierochloë macrophylla --> Anthoxanthum occidentale 

Hierochloë occidentalis --> Anthoxanthum o.

Hierochloë odorata --> Anthoxanthum nitens 

Hordeum californicum --> H. brachyantherum ssp. c. 

Hordeum geniculatum --> H. marinum 

Hordeum glaucum --> H. murinum ssp. g. 

Hordeum jubatum var. caespitosum --> H. j. ssp. j. 

Hordeum leporinum --> H. murinum ssp. l. 

Hystrix californica --> Elymus c. 

Koeleria cristata --> K. macrantha 

Koeleria phleoides --> K. gerardii 

Koeleria pyramidata --> K. macrantha 

Leptochloa fascicularis --> L. fusca ssp. fascicularis 

Leymus mollis --> Elymus m. 

Leymus triticoides --> Elymus t. 

Leymus x vancouverensis --> Elymus x v. 

Lolium multiflorum --> L. perenne 

Lolium perenne 

var. multiflorum --> L. p. 

var. ramosum --> L. p. 

Lolium strictum --> L. rigidum 

Lolium temulentum ssp. leptochaeton --> L. t. 

Lophochlaena californicus --> Pleuropogon c. 

Lophochlaena refracta 

var. hooverianus --> Pleuropogon h. 

var. refracta --> Pleuropogon r. 

Monerma cylindrica --> Hainardia c. 

Nassella cernua --> Stipa c. 

Nassella lepida --> Stipa l. 

Nassella pulchra --> Stipa p. 

Nassella viridula --> Stipa v. 

Oryzopsis miliacea --> Stipa m. 

Panicum capillare 

ssp. hillmanii --> P. h. 

var. occidentale --> P. c. ssp. c. 

Panicum pacificum --> P. acuminatum var. a. 

Panicum scribnerianum --> P. oligosanthes var. s. 

Panicum shastense --> P. acuminatum var. a. 

Pascopyrum smithii --> Elymus s. 

Phragmites communis --> Ph. australis 

Piptatherum miliaceum --> Stipa m. 

Pleuropogon davyi --> P. californicus var. d. 

Poa ampla --> P. secunda 

Poa bolanderi var. howellii --> P. h. 

Poa canbyi --> P. secunda 

Poa douglasii ssp. macrantha --> P. m. 

Poa epilis --> P. cusickii var. e. 

Poa x fibrata --> P. x limosa 

Poa gracillima --> P. secunda 

Poa incurva --> P. secunda 

Poa juncifolia --> P. secunda ssp. j. 

Poa nervosa var. wheeleri --> P. w. 

Poa nevadensis --> P. secunda ssp. juncifolia 

Poa sandbergii --> P. secunda ssp. s. 

Poa scabrella --> P. secunda ssp. s. 

Poa secunda ssp. nevadensis --> P. s. ssp. j. 

Polypogon semiverticillata --> P. viridis 

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Pseudoroegneria spicata --> Elymus s. 

Puccinellia airoides --> P. nuttalliana 

Puccinellia erecta --> Torreyochloa e. 

Puccinellia grandis --> P. nutkaensis 

Puccinellia pallida var. pauciflora --> Torreyochloa p. 

var. p. 

Rhynchelytrum repens --> Melinis r. 

Rhynchelytrum roseum --> Melinis repens 

Rostraria cristata --> Koeleria macrantha 

Schedonorus arundinaceus --> Festuca a. 

Schedonorus phoenix --> Festuca arundinacea 

Schedonorus pratensis --> Festuca p. 

Setaria glauca --> S. pumila 

Setaria lutescens --> S. pumila 

Sieglingia decumbens --> Danthonia d. 

Sitanion hansenii--> Elymus x h. 

Sitanion hordeoides --> Elymus elymoides ssp. h. 

Sitanion hystrix 

var. californicum --> Elymus elymoides ssp. c. 

var. hystrix --> Elymus elymoides ssp. e. 

Sitanion jubatum --> Elymus multisetus 

Stipa columbiana --> S. nelsonii 

Stipa elmeri --> S. occidentalis var. pubescens 

Stipa lemmonii var. jonesii --> S. l. var. l. 

Stipa lepida var. andersonii --> S. lepida var. l. 

Stipa occidentalis 

var. californica --> S. c. 

var. minor --> S. lettermanii 

Stipa williamsii --> S. occidentalis var. minor 

Taeniatherum asperum --> Elymus caput-medusae 

Taeniatherum caput-medusae --> Elymus c.-m. 

Thinopyrum intermedium --> Elymus hispidus 

Thinopyrum ponticum --> Elymus elongatus 

Torreyochloa californica --> T. pallida var. pauciflora 

Tricholaena rosea --> Melinis repens 

Trisetum cernuum var. canescens --> T. canescens 

Triticum ovatum --> T. geniculatum 

Vahlodea atropurpurea --> Deschampsia a. 

Vulpia bromoides --> Festuca b. 

Vulpia dertonensis --> Festuca b. 

Vulpia microstachys 

var. ciliata --> Festuca m. 

var. confusa --> Festuca m. 

var. microstachys --> Festuca m. 

var. pauciflora --> Festuca m. 

Vulpia myuros --> Festuca m. 

Vulpia octoflora 

var. hirtella --> Festuca o. 

var. octoflora --> Festuca o. 


Ribes cruentum --> R. roezlii var. c. 

Ribes divaricatum 

var. inerme --> R. i. var. i. 

var. klamathense --> R. inerme var. k.

Ribes menziesii var. leptosmum --> R. m. 

Ribes nevadense var. glaucescens --> R. n. 

Ribes velutinum var. glanduliferum --> R. v. 

Ribes viscosissimum var. hallii --> R. v. 

HALORAGACEAE 

Myriophyllum brasiliense --> M. aquaticum 

Myriophyllum exalbescens --> M. sibiricum 

HYDRANGEACEAE 

Philadelphus californicus --> Ph. lewisii ssp. c. 

HYDROCHARITACEAE 

Elodea densa --> Egeria d. 

Limnobium spongia --> L. laevigatum 

HYPERICACEAE 

Hypericum formosum ssp. scouleri --> H. s. ssp. s. 

HYDROPHYLLACEAE 

Lemmonia californica --> Nama c. 

Romanzoffia suksdorfii --> R. californica 

IRIDACEAE 

Chasmanthe aethiopica (misidentification) --> C. 

floribunda 

Ixia speciosa --> I. campanulata 

Sisyrinchium douglasii --> Olsynium d. 

Watsonia bulbillifera --> W. meriana 

JUGLANDACEAE 

Juglans californica var. hindsii --> J. h. 

JUNCACEAE 

Juncus balticus 

var. balticus --> J. arcticus var. b. 

var. vallicola --> J. arcticus var. b. 

Juncus breweri --> J. arcticus var. balticus 

Juncus bufonius 

var. congestus --> J. b. var. b. 

var. halophilus --> J. b. var. b. 

Juncus effusus 

var. brunneus --> J. e. 

var. exiguus --> J. exiguus 

var. gracilis --> J. e. 

var. pacificus --> J. e. 

Juncus mertensianus var. gracilis --> J. nevadensis 

Juncus phaeocephalus var. paniculatus --> J. 

phaeocephalus 

Juncus saximontanus --> J. ensifolius var. montanus 

Juncus sphaerocarpus --> J. bufonius var. occidentalis 

Juncus tenuis 

var. congestus --> J. bufonius var. occidentalis 

var. dudleyi --> J. d. 

var. uniflorus --> J. dudleyi 

Luzula subsessilis --> L. comosa 

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LABIATAE 

Mentha arvensis ssp. villosa --> M. a. 

Mentha canadensis --> M. arvensis 

Mentha citrata --> M. aquatica 

Monardella odoratissima 

ssp. glauca --> M. g. 

ssp. pinetorum --> M. o. ssp. pallida 

Monardella villosa 

ssp. sheltonii --> M. s. 

ssp. subserrata --> M. v. ssp. v. 

Prunella vulgaris var. elongata --> P. v. var. lanceolata 

Salvia dorrii var. carnosa --> S. d. var. incana 

Satureja douglasii --> Clinopodium d. 

Scutellaria austinae --> S. siphoncampyloides 

Stachys emersonii --> S. mexicana 

Stachys rigida 

ssp. lanata --> S. ajugoides var. r. 

ssp. quercetorum --> S. ajugoides var. r. 

ssp. rigida --> S. ajugoides var. r. 

ssp. rivularis --> S. ajugoides var. rigida 

LEGUMINOSAE 

Cercis canadensis var. orbiculata --> C. californica 

Cercis occidentalis --> C. californica 

Cercis orbiculata --> C. canadensis var. o. 

Cytisus linifolia --> Genista l. 

Cytisus monspesulanus --> Genista m. 

Glycyrrhiza lepidota var. glutinosa --> G. l. 

Lathyrus japonicus var. glaber --> L. j. 

Lathyrus nevadensis ssp. lanceolatus --> L. n. ssp. n. 

Lathyrus pauciflorus ssp. brownii --> L. b. 

Lathyrus sulphureus var. argillaceus --> L. s. ssp. s. 

Lathyrus tracyi --> L. lanszwertii var. t. 

Lathyrus vestitus ssp. puberulus --> L. v. ssp. v. 

Lotus oblongifolius var. nevadensis --> L. o. var. o. 

Lotus purshianus --> L. unifoliatus var. u. 

Lotus subpinnatus --> L. wrangelianus 

Lotus uliginosus --> L. pedunculatus 

Lupinus albicaulis var. shastensis --> L. a. 

Lupinus aridus ssp. aridus --> L. lepidus var. sellulus 

Lupinus bicolor 

ssp. microphyllus --> L. b. 

ssp. pipersmithii --> L. b. 

ssp. tridentatus --> L. b. 

ssp. umbellatus --> L. b. 

Lupinus constancei --> L. lepidus var. c. 

Lupinus lyallii var. villosus --> L. lepidus var. lobbii 

Lupinus microcarpus 

var. densiflorus --> L. subvexus var. s. 

var. microcarpus --> L. subvexus var. s. 

Lupinus milo-bakeri --> L. luteolus 

Lupinus mucronulatus --> L. onustus 

Lupinus nanus ssp. latifolius --> L. n. 

Lupinus polycarpus--> L. bicolor

Lupinus sellulus 

var. sellulus --> L. lepidus var. s. 

var. ursinus --> L. lepidus var. s. 

Medicago lupulina var. cupiana --> M. l. 

Medicago polymorpha var. brevispina --> M. p. 

Psoralea californica --> Pediomelum c. 

Psoralea macrostachys --> Hoita m. 

Psoralea orbiculatus --> Hoita o. 

Psoralea physodes --> Rupertia p. 

Teline monspessulana --> Genista m. 

Thermopsis macrophylla var. venosa --> Th. gracilis 

Trifolium appendiculatum --> T. variegatum 

Trifolium bifidum dicipiens --> T. b. 

Trifolium depauperatum var. truncatum --> 

T. d. var. stenophyllum 

Trifolium dichotomum --> T. albopurpureum var. d. 

Trifolium fucatum var. virescens --> T. f. 

Trifolium grayi --> T. barbigerum var. b. 

Trifolium kingii var. productum --> T. p. 

Trifolium longipes ssp. nevadense --> T. l. ssp. hansenii 

Trifolium olivaceum --> T. albopurpureum var. o. 

Trifolium oreganum --> T. longipes ssp. o. 

Trifolium procumbens --> T. campestre 

Trifolium tridentatum 

var. aciculare --> T. willdenowii 

var. tridentatum --> T. willdenowii 

Trifolium truncatum --> T. depauperatum var. t. 

Trifolium variegatum 

var. major --> T. v. 

var. melanthum --> T. v. 

Vicia angustifolia --> V. sativa ssp. nigra 

Vicia californica --> V. americana ssp. a. 

Vicia exigua --> V. ludoviciana ssp. l. 

Vicia nigricans ssp. gigantea --> V. g. 

LENTIBULARIACEAE 

Pinguicula vulgaris ssp. macroceras --> P. m. var. m. 

Utricularia fibrosa --> U. gibba 

Utricularia vulgaris --> U. macrorhiza 

LILIACEAE 

Allium mirabile --> A. bolanderi var. b. 

Anticlea fremontii --> Zigadenus f. 

Anticlea occidentalis --> Stenanthium o. 

Brodiaea bridgesii --> Triteleia b. 

Brodiaea congesta --> Dichelostemma c. 

Brodiaea hyacinthina --> Triteleia h. 

Brodiaea ida-maia --> Dichelostemma i.-m. 

Brodiaea laxa --> Triteleia l. 

Brodiaea leptandra --> B. californica ssp. l. 

Brodiaea multiflora --> Dichelostemma m. 

Broaiaea nana --> B. minor 

Brodiaea peduncularis --> Triteleia p. 

Brodiaea pulchella --> Dichelostemma capitatum ssp. c. 

Brodiaea volubilis --> Dichelostemma v. 

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Calochortus caeruleus 

var. fimbriatus --> C. c. 

var. nanus --> C. elegans var. n. 

Dichelostemma pulchellum --> D. capitatum ssp. c. 

Disporum hookeri --> Prosartes h. 

Disporum smithii --> Prosartes s. 

Erythronium grandiflorum var. pallidum --> E. g. ssp. g. 

Fritillaria grayana --> F. roderickii 

Fritillaria lanceolata --> F. affinis var. a. 

Fritillaria recurva var. coccinea --> F. r. 

Lilium vollmeri --> L. pardalinum ssp. v. 

Lilium wigginsii --> L. pardalinum ssp. w. 

Narcissus biflorus --> N. x medioluteus 

Odontostomum --> Tecophilaeaceae 

Prosartes hookeri var. parvifolia --> P. p. 

Smilacina racemosa --> Maianthemum r. 

Smilacina stellata --> Maianthemum s. 

Smilax --> Smilacaceae 

Streptopus amplexifolius 

var. americanus --> S. amplexifolius 

var. denticulatus --> S. amplexifolius 

Tofieldia glutinosa 

ssp. glutinosa --> Triantha occidentalis ssp. o. 

ssp. occidentalis --> Triantha occidentalis ssp. 

o. 

Toxicoscordion fontanum --> Zigadenus f. 

Toxicoscordion fremontii --> Zigadenus f. 

Toxicoscordion micranthus --> Zigadenus m. 

Toxicoscordion paniculatum --> Zigadenus p. 

Toxicoscordion venenosum --> Zigadenus v. 

Trillium chloropetalum var. angustipetalum --> T. a. 

Trillium rivale --> Pseudotrillium r. 

Triteleia crocea var. modesta --> T. c. 

Zigadenus micranthus var. fontanus --> Z. f. 

Zygadenus --> Zigadenus 

LINACEAE 

Linum californicum --> Hesperolinon c. 

Linum clevelandii --> Hesperolinon c. 

Linum digynum --> Sclerolinon d. 

Linum drymarioides --> Hesperolinon d. 

Linum micranthum --> Hesperolinon m. 

Linum perenne ssp. lewisii --> L. lewisii var. l. 

Linum spergulinum --> Hesperolinon s. 

LYTHRACEAE 

Lythrum adsurgens --> L. hyssopifolia 

MALVACEAE 

Fremontodendron californicum 

ssp. crassifolium --> F. californicum 

ssp. napense --> F. c. 

Malacothamnus helleri --> M. fremontii 

Malacothamnus mendocinensis --> M. fasciculatus

Malva rotundifolia --> M. neglecta [misapplication of 

name] 

Sida hederacea --> Malvella leprosa 

Sida leprosa --> Malvella l. 

Sidalcea oregana ssp. maxima --> S. o. ssp. hydrophila 

Sidalcea oregana ssp. setosa --> S. o. ssp. spicata 

MOLLUGINACEAE 

Tetragonia --> Aizoaceae 

MYRICACEAE 

Myrica californica --> Morella c. 

NYMPHAEACEAE 

Nuphar lutea ssp. polycephala --> N. p. 

ONAGRACEAE 

Boisduvalia densiflora --> Epilobium d. 

Boisduvalia glabella 

var. campestris --> Epilobium pygmaeum 

var. glabella --> Epilobium pygmaeum 

Boisduvalia stricta --> Epilobium torreyi 

Camissonia contorta var. epiloboides --> C. lacustris 

Camissoniopsis --> Camissonia 

Epilobium adenocaulon --> E. ciliatum ssp. c. 

Epilobium angustifolium 

ssp. angustifolium --> Chamerion a. ssp. a. 

ssp. circumvagum --> Chamerion a. ssp. c. 

Epilobium brevistylum 

var. brevistylum --> E. ciliatum ssp. 

glandulosum 

var. ursinum --> E. halleanum 

Epilobium canum ssp. septentrionale --> E. s. 

Epilobium exaltatum --> E. oreganum 

Epilobium glandulosum --> E. ciliatum var. g. 

Epilobium latifolium --> Chamerion l. 

Epilobium obcordatum ssp. siskiyouense --> E. s. 

Epilobium paniculatum --> E. brachycarpum 

Epilobium pringleanum 

var. pringleanum --> E. halleanum 

var. tenue --> E. halleanum 

Gaura heterandra --> Clarkia h. 

Heterogaura heterandra --> Clarkia h. 

Ludwigia palustris var. pacifica --> L. palustris 

Oenothera erythrosepala --> Oe. glazioviana 

Oenothera hookeri 

ssp. angustifolia 

ssp. hookeri --> Oe. elata ssp. hirsutissima 

ssp. wolfii --> Oe. w. 

Oenother strigosa --> Oe. villosa ssp. s. 

Taraxia --> Camissonia 

Tetrapteron --> Camissonia 

Zauschneria californica --> Epilobium canum 

Zauschneria septentrionalis --> Epilobium s. 

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ORCHIDACEAE 

Eburophyton austinae --> Cephalanthera a. 

Habenaria dilatata var. leuctostachys --> Platanthera d. 

var. l. 

Habenaria elegans 

var. elegans --> Piperia e. 

var. maritima --> Piperia e. 

Habenaria hyperborea --> Platanthera h. var. h. 

Habenaria michaelii --> Piperia elongata ssp. m. 

Habenaria saccata --> Platanthera stricta 

Habenaria sparsiflora --> Platanthera s. 

Habenaria unalascensis --> Piperia u. 

Piperia elongata ssp. michaelii --> P. m. 

Piperia maritima --> P. elegans ssp. e. 

Piperia multiflora --> P. elegans ssp. e. 

Platanthera leucostachys --> P. dilatata var. l. 

OROBANCHACEAE 

Castilleja applegatei var. fragilis --> C. a. var. pinetorum 

Castilleja arachnoidea 

ssp. schizotricha --> C. s. 

ssp. shastensis --> C. a. 

Castilleja brevilobata --> C. hispida ssp. b. 

Castilleja elata --> C. miniata ssp. e. 

Castilleja franciscana --> C. subinclusa ssp. f. 

Castilleja latifolia var. mendocinensis --> C. m. 

Castilleja litoralis --> C. affinis ssp. l. 

Castilleja martinii --> C. applegatei ssp. m. 

Castilleja roseana --> C. applegatei var. martinii 

Castilleja stenantha 

ssp. spiralis --> C. minor ssp. spiralis 

ssp. stenantha --> C. minor ssp. spiralis 

Castilleja wightii ssp. litoralis --> C. affinis ssp. l. 

Cordylanthus maritimus ssp. canescens --> 

Chlorophyton m. ssp. c. 

Cordylanthus pallescens --> C. tenuis ssp. p. 

Cordylanthus pilosus ssp. diffusus --> C. p. 

Orobanche fasciculata var. franciscana --> O. fasciculata 

Orobanche grayana --> O. californica ssp. g. 

Orobanche uniflora 

var. minuta --> O. u. 

var. occidentalis --> O. u. 

var. purpurea --> O. u. 

var. sedi --> O. u. 

Orthocarpus attenuatus --> Castilleja a. 

Orthocarpus castillejoides 

var. castillejoides --> Castilleja ambigua ssp. a. 

var. humboldtiensis --> Castilleja ambigua ssp. 

h. 

Orthocarpus copelandii --> O. cuspidatus ssp. c. 

Orthocarpus densiflorus --> Castilleja d. 

Orthocarpus erianthus 

var. erianthus --> Triphysaria e. ssp. e. 

var. gratiosus --> Triphysaria e. ssp. e. 

var. roseus --> Triphysaria e. var. r.

Orthocarpus faucibarbatus 

ssp. albidus --> Triphysaria versicolor ssp. v. 

ssp. faucibarbatus --> Triphysaria versicolor 

ssp. f. 

Orthocarpus hispidus --> Castilleja tenuis 

Orthocarpus lacerus --> Castilleja l. 

Orthocarpus lithospermoides 

var. bicolor --> Castilleja rubicunda ssp. r. 

var. lithospermoides --> Castilleja rubicunda 

ssp. l. 

Orthocarpus purpurascens 

var. latifolius --> Castilleja exerta ssp. e. 

var. purpurascens --> Castilleja exserta ssp. e. 

Orthocarpus pusillus --> Triphysaria p. 

Pedicularis groenlandica ssp. surrecta --> P. g. 

OXALIDACEAE 

Oxalis laxa --> O. radicosa 

PAPAVERACEAE 

Dicentra chrysantha --> Ehrendorferia c. 

Meconella linearis --> Hesperomecon l. 

Platystigma linearis --> Hesperomecon l. 

PARNASSIACEAE 

Parnassia palustris var. californica --> P. c. 

PLANTAGINACEAE 

Plantago australis var. hirtella --> P. subnuda 

Plantago hirtella 

var. galeottiana --> P. subnuda 

var. hirtella --> P. subnuda 

Plantago hookeriana var. californica --> P. erecta 

Plantago major 

var. intermedia --> P. m. 

var. pilgeri --> P. m. 

var. scopulorum --> P. m. 

POLEMONIACEAE 

Allophyllum capillaris --> Navarretia c. 

Allophyllum leptalea ssp. leptalea --> Navarretia l. ssp. l. 

Allophyllum sinistrum 

ssp. pinnatisectum --> Navarretia s. ssp. p. 

ssp. sinistrum --> Navarretia s. ssp. s. 

Allophyllum violaceum --> A. gilioides ssp. v. 

Eriastrum tracyi --> E. brandegeeae 

Gilia capillaris --> Navarretia c. 

Gilia gilioides 

ssp. gilioides --> Allophyllum gilioides ssp. g. 

ssp. violaceum --> Allophyllum v. 

Gilia leptalea 

ssp. leptalea --> Navarettia l. ssp. l. 

ssp. pinnatisecta --> Navatteria sinistra ssp. p. 

Gilia sinistra 

ssp. pinnatisecta --> Navarretia s. ssp. p. 

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ssp. sinistra --> Navarretia s. ssp. s. 

Leptodactylon pungens 

ssp. hookeri --> Linanthus p. 

ssp. pulchriflora --> Linanthus pungens 

ssp. pungens --> Linanthus p. 

Linanthus acicularis --> Leptosiphon a. 

Linanthus androsaceus 

ssp. androsaceus --> Leptosiphon parviflorus 

ssp. croceus --> Leptosiphon parviflorus 

ssp. luteus --> Leptosiphon parviflorus 

Linanthus bakeri --> Leptosiphon bolanderi 

Linanthus bicolor 

var. bicolor --> Leptosiphon b. 

var. minimus --> Leptosiphon m. 

Linanthus bolanderi ssp. rattanii --> Leptosiphon r. 

Linanthus ciliatus --> Leptosiphon c. ssp. c. 

Linanthus dichotomus ssp. meridianus --> L. d. 

Linanthus filipes --> Leptosiphon f. 

Linanthus grandiflorus --> Leptosiphon g. 

Linanthus harknessii 

ssp. harknessii --> Leptosiphon h. 

ssp. condensatus --> Leptosiphon h. 

Linanthus latisectus --> Leptosiphon l. 

Linanthus liniflorus ssp. pharnaceoides --> Leptosiphon 

l. 

Linanthus montanus --> Leptosiphon m. 

Linanthus nuttallii 

ssp. howellii --> Leptosiphon n. ssp. h. 

ssp. nuttallii --> Leptosiphon n. ssp. n. 

Linanthus parviflorus --> Leptosiphon p. 

Navarretia bakeri --> N. leucocephala ssp. b. 

Navarretia pauciflora --> N. leucocephala ssp. p. 

Navarretia pleiantha --> N. leucocephala ssp. p. 

Phlox azurea --> Ph. diffusa ssp. d. 

Phlox diffusa 

ssp. rigida --> Ph. r. 

ssp. subcarinata --> Ph. austromontana 

Phlox douglasii ssp. rigida --> Ph. r. 

Phlox gracilis 

ssp. gracilis --> Microsteris g. var. g. 

ssp. humilior --> Microsteris g. var. h. 

Phlox stansburyi var. hirsuta --> Ph. s. 

Polemonium caeruleum ssp. amygdalinum --> 

P. occidentale ssp. o. 

POLYGONACEAE 

Aconogonon davisiae 

var. davisiae --> Polygonum d. var. d. 

var. glabrum --> Polygonum d. var. g. 

Aconogonon phytolaccifolium --> Polygonum ph. 

Bistorta bistortoides --> Polygonum b. 

Eriogonum ternatum var. congdonii --> E. c. 

Fallopia convolvulus --> Polygonum c. 

Fallopia japonica var. japonica --> Polygonum 

cuspidatum

Fallopia sachalinensis --> Polygonum s. 

Persicaria amphibia --> Polygonum a. var. emersum 

Persicaria capitata --> Polygonum c. 

Persicaria hydropiper --> Polygonum h. 

Persicaria hydropiperoides --> Polygonum h. 

Persicaria lapathifolia --> Polygonum l. 

Persicaria maculosa --> Polygonum persicaria 

Persicaria pensylvanica --> Polygonum p. 

Persicaria punctata --> Polygonum p. 

Persicaria wallichii var. wallichii --> Polygonum 

polystachyum 

Polygonum amphibium 

var. emersum --> P. a. 

var. stipulaceum --> P. a. 

Polygonum arenastrum --> P. aviculare ssp. depressum 

Polygonum douglasii 

ssp. johnstonii --> P. sawatchense ssp. s. 

ssp. majus --> P. m. 

ssp. spergulariiforme --> P. s. 

Rumex acetosella ssp. angiocarpus --> R. acetosella 

Rumex angiocarpus --> R. acetosella 

Rumex fenestratus --> R. occidentalis 

Rumex fueginus --> R. maritimus 

Rumex maritimus 

var. fueginus --> R. m. 

var. persicarioides --> R. m. 

Rumex obtusifolius ssp. agrestis --> R. o. 

Rumex occidentalis var. fenestratus --> R. o. 

Rumex persicarioides --> R. maritimus 

Rumex pulcher ssp. divaricatus --> R. p. 

Rumex salicifolius 

var. crassus --> R. c. 

var. denticulatus --> R. californicus 

var. transitorius --> R. t. 

ssp./var. triangulivalvis --> R. t. 

PORTULACACEAE 

Calandrinia ciliata var. menziesii --> C. c. 

Calyptridium monospermum --> Cistanthe m. 

Calyptridium quadripetalum -->Cistanthe q. 

Calyptridium umbellatum --> Cistanthe u. 

Claytonia chamissoi --> Montia ch. 

Claytonia lanceolata 

var. peirsonii --> C. l. 

var. sessilifolia --> C. l. 

Claytonia sibirica var. bulbifera --> C. s. 

Claytonia spathulata --> C. exigua ssp. e. 

Montia gypsophiloides --> Claytonia g. 

Montia hallii --> M. fontana 

Montia parviflora --> Claytonia p. 

Montia perfoliata 

var. perfoliata --> Claytonia p. 

var. depressa --> Clatonia rubra ssp. d. 

Montia saxosa --> Claytonia s. 

Montia spathulata 

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var. spathulata --> Claytonia exigua ssp. e. 

var. tenuifolia --> Claytonia s. var. t. 

POTAMOGETONACEAE 

Potamogeton berchtoldii --> P. pusillus var. tenuissimus 

Potamogeton epihydrus var. nuttallii --> P. e. 

Potamogeton filiformis --> Stuckenia f. 

Potamogeton pectinatus --> Stuckenia p. 

PRIMULACEAE 

Anagallis linifolia --> A. monelii 

Centunculus minimus --> Anagallis m. 

Trientalis arctica --> T. europaea 

Trientalis borealis ssp. latifolia --> T. l. 

Trientalis europaea ssp. arctica --> T. eu. 

Dodecatheon hansenii --> D. hendersonii 

Dodecatheon hendersonii ssp. hansenii --> D. 

hendersonii 

Primula clevelandii var. patulum --> Dodecatheon c. 

Primula hendersonii --> Dodecatheon h. 

Primula jeffreyi --> Dodecatheon j. 

RANUNCULACEAE 

Aconitum geranioides --> A. columbianum ssp. c. 

Aconitum leibergii --> A. columbianum ssp. c. 

Aconitum viviparum --> A. columbianum ssp. c. 

Anemone quinquefolia 

var. minor --> A. oregana var. o. 

var. oregana --> A. oregana var. o. 

Caltha howellii --> C. leptosepala 

Caltha leptosepala 

ssp. howellii --> C. l. 

var. biflora --> C. l. 

ssp. howellii --> C. l. 

var. biflora --> C. l. 

Delphinium ajacis --> Consolida a. 

Delphinium menziesii (misapplication) --> D. andersonii 

Delphinium sonnei --> D. nuttallianum 

Isopyrum occidentale --> Enemion o. 

Isopyrum stipitatum --> Enemion s. 

Myosurus minimus 

ssp. filiformis --> M. m. 

ssp. major --> M. m. 

ssp. montanus --> M. apetalus var. m. 

Pulsatilla occidentalis --> Anemone o. 

Ranunculus aquatilis var. harrisii --> R. a. var. diffusus 

Ranunculus californicus 

var. cuneatus --> R. californicus 

var. gratus --> R. c. var. cuneatus 

Ranunculus circinatus var. subrigidus --> R. aquatilis var. 

s. 

Ranunculus flammula var. samolifolius --> R. f. var. 

ovalis 

Ranunculus occidentalis 

var. eisenii --> R. o. var. o.

var. rattanii --> R. o. var. o. 

Ranunculus subrigidus --> R. aquatilis var. s. 

Ranunculus trichophyllus --> R. aquatilis var. diffusus 

Trautvetteria caroliniensis var. occidentalis --> T. c. 

Trautvetteria grandis --> T. caroliniensis 

Ranunculus aquatilis var. capillaceous --> R. a. var. 

diffusus 

RHAMNACEAE 

Ceanothus divergens ssp. confusus --> C. c. 

Ceanothus integerrimus 

var. californicus --> C. i. 

var. macrothyrsus --> C. i. 

Ceanothus x lorenzenii --> C. velutinus var. x l. 

Ceanothus prostratus 

var. laxus --> C. p. 

var. occidentalis --> C. p. 

var. pinetorum --> C. pinetorum 

Ceanothus ramulosus --> C. cuneatus var. r. 

Ceanothus soredianus --> C. oliganthus ssp. s. 

Rhamnus californica 

ssp. californica --> Frangula c. ssp. c. 

ssp. crassifolia --> Frangula c. ssp. crassifolia 

ssp. occidentalis --> Frangula c. ssp. o. 

ssp. tomentella --> Frangula c. ssp. t. 

Rhamnus crocea ssp. ilicifolia --> R. i. 

Rhamnus purshiana 

var. anonaefolia --> Frangula p. ssp. a. 

var. purshiana --> Frangula p. ssp. p. 

Rhamnus rubra 

ssp./var. obtusissima --> Frangula r. ssp. o. 

ssp./var. rubra --> Frangula r. ssp. r. 

Rhamnus tomentella 

ssp. crassifolia --> Frangula californica ssp. c. 

ssp. tomentella --> Frangula californica ssp. t. 

ROSACEAE 

Acaena anserinifolia --> A. nova-zelandiae 

Alchemilla arvensis --> Aphanes occidentalis 

Alchemilla occidentalis --> Aphanes arvensis 

Amelanchier alnifolia var. florida --> A. a. var. 

semiintegrifolia 

Amelanchier florida --> A. alnifolia var. semiintegrifolia 

Amelanchier pallida --> A. utahensis var. u. 

Amelanchier pumila --> A. alnifolia var. p. 

Aphanes occidentalis --> A. arvensis 

Argentina anserina --> Potentilla a. ssp. a. 

Argentina egedii ssp. e. --> Potentilla anserina ssp. 

pacifica 

Aruncus vulgaris --> A. dioicus var. acuminatus 

Cercocarpus betuloides 

var. betuloides --> C. montanus var. glaber 

var. macrourus --> C. montanus var. m. 

Chaenomeles sinensis --> Pseudocydonia s. 

Fragaria californica --> F. vesca 

-174- 

Cydonia sinensis --> Pseudocydonia s. 

Fragaria californica --> F. vesca 

Fragaria chiloensis ssp. pacifica --> F. ch. 

Fragaria crinita --> F. vesca 

Fragaria platyphylla --> F. virginiana 

Fragaria vesca 

ssp. bracteata --> F. v. 

ssp. californica --> F. v. 

Fragaria virginiana ssp. platyphylla --> F. v. 

Geum ciliatum --> G. triflorum 

Geum triflorum var. ciliatum --> G. t. 

Heteromeles salicifolia --> H. arbutifolia 

Holodiscus boursieri --> H. discolor 

Holodiscus discolor 

var. delnortensis --> H. discolor 

var. franciscanus --> H. d. 

Holodiscus dumosus 

var. dumosus --> H. discolor 

var. glabrescens --> H. discolor 

Holodiscus microphyllus var. glabrescens --> H. 

discolor 

Horkelia elata --> H. californica var. dissita 

Horkelia fusca ssp. capitata --> H. f. var. pseudocapitata 

Malus sylvestris --> M. pumila (misapplication of name) 

Osmaronia cerasiformis --> Oemleria c. 

Pentaphylloides floribunda --> 

Dasiphora fruticosa ssp. floribunda 

Pentaphylloides fruticosa --> 

Dasiphora fruticosa ssp. floribunda 

Photinia arbutifolia --> Heteromeles a. 

Potentilla breweri --> P. drummondii ssp. b. 

Potentilla drummondii 

ssp./var. breweri --> P. b. 

ssp./var. bruceae --> P. b. 

Potentilla egedii 

var. grandis --> Potentilla anserina ssp. pacifica 

Potentilla floribunda --> Dasiphora fruticosa ssp. 

floribunda 

Potentilla fruticosa --> Dasiphora f. ssp. floribunda 

Potentilla glandulosa 

ssp. glanduloa --> Drymocallis g. var. g. 

ssp. globosa --> Drymocallis rhomboidea 

ssp. hansenii --> Drymocallis h. 

ssp. nevadensis --> Drymocallis lactea var. 

austiniae 

ssp. pseudorupestris --> Drymocallis ps. var. 

saxicola 

ssp. reflexa --> Drymocallis g. var. r. 

Potentilla gordonii var. ursinorum --> Ivesia g. var. u. 

Potentilla gracilis 

var. glabrata --> P. g. var. fastigiatus 

var. nuttallii --> P. g. var. fastigiatus 

Potentilla palustris --> Comarum p. 

Potentilla rivalis var. millegrana --> P. r.

Prunus amygdalus --> P. dulcis 

Rosa eglanteria --> R. rubiginosa (conserved species 

name) 

Rosa nutkana var. muricata --> P. n. 

Rosa nutkana var. setosa --> P. n. 

Rosa yainacensis --> R. nutkana 

Rubus discolor --> R. armeniacus 

Rubus macropetalus --> R. ursinus 

Rubus parviflorus var. hypomalacus --> R. p. var. p. 

Rubus pedatus --> R. lasiococcus 

Rubus procerus --> R. armeniacus 

Rubus vitifolius --> R. ursinus 

Sanguisorba microcephala --> S. officinalis ssp. m. 

Sanguisorba officinalis ssp. microcephala --> S. o. 

Sorbaria arborea --> S. kirilowii 

Sorbus cascadensis --> S. scopulina var. c. 

Sorbus scopulina var. cascadensis --> S. s. 

Spiraea densiflora ssp. splendens --> S. s. var. s. 

RUBIACEAE 

Galium nuttallii (of California authors) --> G. porrigens 

var. p. 

Galium trifidum 

var. pacificum --> G. t. var. columbianum 

var. pusillum --> G. t. var. subbiflorum 

RUPPIACEAE 

Ruppia maritima var. intermedia --> R. m. 

Ruppia spiralis --> R. cirrhosa 

SALICACEAE 

Populus balsamifera var. trichocarpa --> P. t. 

Salix bonplandiana --> S. laevigata 

Salix californica --> S. eastwoodiae 

Salix coulteri --> S. sitchensis 

Salix commutata --> S. eastwoodiae 

Salix gooddingii var. variabilis --> S. g. 

Salix hindsiana --> S. exigua var. h. 

Salix hookeriana 

var. piperi --> S. p. 

var. tomentosa --> S. h. 

Salix lasiandra --> S. lucida ssp. lasiandra 

Salix mackenziana --> S. prolixa 

Salix melanopsis 

var. bolanderiana --> S. m. 

var. gracilis --> S. m. 

Salix parksiana --> S. melanopsis 

Salix piperi --> S. hookeriana 

Salix scouleriana var. coetana --> S. s. 

SAXIFRAGACEAE 

Boykinia elata --> B. occidentalis 

Heuchera cylindrica var. ovalifolia --> H. c. 

Heuchera micrantha var. pacifica --> H. m. var. 

diversifolia 

-175- 

Heuchera ovalifolia --> H. cylindrica 

Heuchera pringlei --> H. merriamii 

Heuchera rubescens var. alpicola --> H. r. 

Lithophragma tenellum var. emarginata --> L. t. 

Lithophragma trifoliatum --> L. parviflorum var. t. 

Parnassia --> Parnassiaceae 

Peltiphyllum peltatum --> Darmera p. 

Philadelphus --> Hydrangeaceae 

Ribes --> Grossulariaceae 

Saxifraga aprica --> Micranthes a. 

Saxifraga bryophora --> Micranthes b. 

Saxifraga caespitosa var. emarginata --> S. c. 

Saxifraga californica --> Micranthes c. 

Saxifraga fallax --> S. californica 

Saxifraga ferruginea --> Micranthes f. 

Saxifraga fragosa --> Micranthes f. 

Saxifraga fragarioides --> Saxifragopsis f. 

Saxifraga howellii --> Micranthes h. 

Saxifraga integrifolia --> Micranthes i. 

Saxifraga marshallii --> Micranthes m. 

Saxifraga nidifica var. claytoniifolia --> Micranthes n. 

Saxifraga nuttallii --> Cascadia n. 

Saxifraga occidentalis var. rufidula --> Micranthes r. 

Saxifraga oregana --> Micranthes o. 

Saxifraga punctata ssp. arguta --> Micranthes 

odontoloma 

Saxifraga rufidula --> Micranthes r. 

Saxifraga tolmiei --> Micranthes t. 

Tiarella unifoliata --> T. trifoliata var. u. 

Tolmiea diplomenziesii --> T. menziesii 

Whipplea --> Hydrangeaceae 


Antirrhinum breweri --> Sairocarpus b. 

Antirrhinum cornutum --> Sairocarpus c. 

Antirrhinum subcordatum --> Sairocarpus s. 

Antirrhinum vexillo-calyculatum 

ssp. breweri --> Sairocarpus b. 

ssp. v. --> Sairocarpus v. 

Antirrhinum virga --> Sairocarpus v. 

Collinsia parviflora var. grandiflora --> C. g. 

Collinsia wrightii --> C. torreyi var. w. 

Diplacus aurantiacus --> Mimulus a. 

Hebe speciosa --> Veronica speciosa 

Linaria canadensis 

var. canadensis --> Nuttallanthus c. 

var. texana --> Nuttallanthus t. 

Linaria genistifolia ssp. dalmatica --> L. d. 

Lindernia anagallidea --> L. dubia var. a. 

Mimetanthe pilosus --> Mimulus p. 

Mimulus brachiatus --> M. layneae 

Mimulus guttatus 

ssp. arvensis --> M. g. 

ssp. litoralis --> M. g. 

ssp. micranthus --> M. g.

Mimulus moschatus 

var. longiflorus --> M. m. 

var. moniliformis --> M. moschatus 

var. sessilifolius --> M. m. 

Mimulus nasutus --> M. guttatus 

Mimulus pilosellus --> M. primuloides var. primuloides 

Mimulus primuloides var. pilosellus --> M. primuloides 

var. p. 

Penstemon breviflorus --> Keckiella b. 

Penstemon cinereus --> P. humilis var. h. 

Penstemon corymbosus --> Keckiella c. 

Penstemon laetus ssp. roezlii --> P. r. 

Penstemon lemmonii --> Keckiella l. 

Penstemon nemorosus --> Nothochelone n. 

Penstemon shastensis --> P. heterodoxus var. s. 

Synthyris cordata --> Veronica californica 

Synthyris reniformis var. cordata --> Veronica californica 

SMILACACEAE 

Smilax hispida var. californica --> S. c. 

SOLANACEAE 

Chamaesarache nana --> Leucophysalis n. 

Datura meteloides --> D. wrightii 

Datura stramonium var. tatula --> D. s. 

Lycopersicon esculentum 

Nicotiana bigelovii --> N. quadrivalvis var. b. 

Physalis virginiana var. sonorae --> Ph. longifolia var. l. 

Solanum laciniatum --> S. aviculare 

Solanum nodiflorum --> S. americanum 

Solanum physalifolium var. nitidibaccatum --> S. ph. 

Solanum sarrachoides --> S. physalifolium 

SPARGANIACEAE 

Sparganium erectum ssp. stoloniferum --> 

S. eurycarpum ssp. eu. 

STYRACACEAE 

Styrax officinalis ssp. californica --> S. o. ssp. redivivus 

UMBELLIFERAE 

Angelica tomentosa var. hendersonii --> A. h. 

Apium leptophyllum --> Ciclopsermum l. 

Caucalis microcarpus --> Yabea m. 

Conioselinum chinense --> C. pacificum 

Glehnia leiocarpa --> G. littoralis ssp. leiocarpa 

Heracleum lanatum --> H. maximum 

Heracleum sphondylium --> H. maximum 

Hydrocotyle --> Araliaceae 

Lomatium humile --> L. caruifolium var. denticulatum 

Osmorhiza chilensis --> O. berteroi 

-176- 

Pteryxia terebinthina var. californica --> Cymopterus t. 

var. c. 

Torilis heterophylla --> T. arvensis ssp. h. 

URTICACEAE 

Urtica californica --> U. dioica ssp. gracilis 

Urtica dioica 

ssp. californica --> U. d. ssp. gracilis 

ssp. lyallii --> U. d. ssp. gracilis 

Urtica holosericea --> U. dioica ssp. h. 

Urtica lyallii --> U. dioica ssp. gracilis 

VALERIANACEAE 

Kentranthus --> Centranthus 

Plectritis brachystemon --> P. congesta ssp. b. 

Valeriana capitata var. californica --> V. californica 

Valeriana sitchensis var. scouleri --> V. scouleri 

VERBENACEAE 

Phyla nodiflora var. reptas --> Ph. n. 

Verbena lasiostachys 

ssp. scabrida --> V. l. 

ssp. septentrionalis --> V. l. 

Verbena robusta --> V. lasiostachys 

VIOLACEAE 

Viola adunca var. oxyceras --> V. a. var. a. 

Viola bakeri ssp. shastensis --> V. b. 

Viola californica --> V. glabella 

Viola lanceolata var. occidentalis --> V. primulifolia ssp. 

o. 

Viola lobata var. psychodes --> V. l. ssp. l. 

Viola praemorsa 

ssp. major --> V. p. ssp. linguifolia 

ssp. oregona --> V. p. ssp. linguifolia 

Viola psychodes --> V. lobata ssp. l. 

Viola quercetorum --> V. purpurea ssp. q. 

VISCACEAE 

Phoradendron bolleanum ssp. densum --> Ph. d. 

Phoradendron flavescens 

var. macrophyllum --> Ph. m. ssp. m. 

var. villosum --> Ph. v. 

Phoradendron juniperinum ssp. libocedri --> Ph. l. 

Phoradendron tomentosum ssp. macrophyllum --> 

Ph. m. ssp. m. 

ZOSTERACEAE 

Zostera marina var. latifolia --> Z. m. 

Zostera pacifica --> Z. marina 

Revised: 4 August 2010

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