Asteraceae

Plagiocheilus Arn. ex DC.

First published in Prodr. 6: 142 (1838)
This genus is accepted
The native range of this genus is S. Tropical America.

Descriptions

Hind, D.J.N. A synopsis of Plagiocheilus (Compositae: Astereae). Kew Bull 75, 62 (2020). DOI: https://doi.org/10.1007/s12225-020-09916-1

Type
Type: not stated. Lectotype (effectively selected by Cabrera 1974: 422): Plagiocheilus tanacetoides Hook. & Arn. ex DC.
Morphology General Habit
Erect to creeping perennial herbs
Morphology Leaves
Leaves alternate, petioles winged, lamina pinnate to bipinnate
Morphology Reproductive morphology Inflorescences
Inflorescences of solitary axillary capitula or capitula short-pedicellate in small terminal clusters
Morphology Reproductive morphology Inflorescences Capitulum
Capitula radiate, heterogamous; involucre campanulate to hemispherical; phyllaries few- (2 or 3) seriate, subequal, margins hyaline; receptacle convex to conical, epaleaceous
Ray
Ray florets multiseriate, female, corollas bilabiate, with one or two smaller lobes on inner side, purple
Disc
Disc florets functionally male, corollas (4- or) 5-lobed, greenish-yellow to reddish-brown, corolla tube narrow, limb narrowly funnelform, corolla lobes deltoid to oblong-lanceolate, erect to spreading
Morphology Reproductive morphology Fruits
Achenes oblong, compressed, glabrous or sometimes setuliferous, setulae anchor-shaped; pappus absent.
[KBu]

Sources

  • Herbarium Catalogue Specimens

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Bulletin

    • Kew Bulletin
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0