Convolvulaceae
Jacquemontia

Jacquemontia villosissima Ooststr.

First published in Recueil Trav. Bot. Néerl. 33: 218 (1936)
This species is accepted
The native range of this species is E. Bolivia to Brazil (Goiás, Minas Gerais). It is a subshrub and grows primarily in the seasonally dry tropical biome.

Descriptions

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, Minas Gerais, Curvellos et in campis Sta Luzia, Oct. 1834, Riedel 2754 (holotype LE, n.v.).
Morphology General Habit
Decumbent perennial herb, with long stems, all parts densely villous with long spreading apparently simple hairs
Morphology Leaves
Leaves subsessile, oblong elliptic, narrowed at both ends, acute, numerous, the internodes short; inflorescence of few terminal and axillary racemes, 2 – 5 cm in length, the flowers imbricate; bracteoles linear-lanceolate, acute, villous; sepals subequal, linear, acute, erect, 6 – 7 × 0.5 mm, villous; corolla pale blue, c. 1 cm long.
Distribution
A globally rare species of campo sujo known from a few locations in central Brazil (Minas Gerais and Goías states) and a single location in eastern Bolivia.
Conservation
This species is globally rare and should be treated as Critically Endangered (CR) in Bolivia as it is known from a single collection. Even though the collection locality is in a protected area, the absence of other collections suggests it is very rare and the only population could be lost by any habitat change, such as the development of scrub.
[KBu]

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]

Sources

  • Angiosperm Extinction Risk Predictions v1

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

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. 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 2025. 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