Convolvulaceae
Jacquemontia

Jacquemontia velutina Choisy

First published in A.P.de Candolle, Prodr. 9: 398 (1845)
This species is accepted
The native range of this species is E. Bolivia to Brazil and E. Paraguay. It is a climber and grows primarily in the seasonally dry tropical biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Wood, J.R.I., Clegg, R. Jacquemontia (Convolvulaceae) in Bolivia and Peru. Kew Bull 76, 375–420 (2021). DOI: https://doi.org/10.1007/s12225-021-09936-5

Type
Brazil, Pohl s.n. (lectotype BR-0000005843619, designated here, isolectotypes BR-000005843947, M-0184751).
Morphology General Habit
Slender twining herb, all vegetative parts densely tomentose
Morphology Leaves
Leaves ovate to suborbicular, rounded to obtuse, mucronate; petioles usually short 1 – 2 (– 3) cm
Morphology Reproductive morphology Inflorescences
Inflorescence compact; bracteoles linear, 1 – 2 mm, inconspicuous; pedicels 1 – 3 mm; sepals subequal, ovate to elliptic, obtuse to rounded, usually less than 4 mm long, outer tomentose, inner with broad scarious margins; corolla relatively narrow, dull pink, white or blue, 13 – 17 mm.
Distribution
Disturbed cerrado vegetation, often on sandy soil, occurring in scattered locations in eastern Bolivia, eastern Paraguay and the Cerrado biome region of Brazil. It is absent from the Chaco and most of the caatinga region of NE Brazil.
Conservation
Jacquemontia velutina should be treated as Near Threatened (NT) based on its extent of occurrence of 20,454.895 km2. The category of Endangered (EN) based on its area of occupancy does not seem appropriate given its presence in disturbed cerrado vegetation including roadsides. It is quite possibly under-recorded because it flowers relatively late in the season.
Phenology
Found in flower from March to July.
[KBu]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • 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