Convolvulaceae
Jacquemontia

Jacquemontia weberbaueri Helwig

First published in Notizbl. Bot. Gart. Berlin-Dahlem 9: 1136 (1927)
This species is accepted
The native range of this species is N. Peru. It is a climbing perennial 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
Peru, Abajo de Santa Cruz, Prov. Hualgayoc, 1700 m, A. Weberbauer 4154 (holotype B† (photo F-FOBN013774), isotypes G-11222052, USM-000312).
Morphology General Habit
Twining perennial with pubescent to tomentose, oblong-ovate leaves often with fulvous indumentum, the apex obtuse with a very distinctive 2 mm long mucro
Morphology Reproductive morphology Inflorescences
Inflorescence of moderately lax subcorymbose cymes with 10 – 15 flowers; pedicels 2 – 9 mm, bracteoles filiform, to 1.5 mm; sepals 5 – 6 × 2 – 2.5 mm long, subequal, oblong to narrowly oblong-elliptic, acuminate, pubescent; corolla 18 – 22 mm, lilac. The apical mucro on the leaves is very distinct.
Distribution
Dry secondary woodland usually found between 450 and 1100 m in northern Andean Peru, essentially in the Marañón valley region. Records from Ecuador (Austin 1982a) are probably errors for Jacquemontia peruviana. It is almost certainly endemic to Peru.
Conservation
Based on its extent of occurrence of 25,202.329 km2, this species should be considered Near Threatened (NT) but, based on an area of occupancy of 40,000 km2, it might be regarded as Endangered (EN). Further studies of the known populations are needed to confirm which categorisation is correct but NT seems more likely given that the Marañón valley is threatened by habitat fragmentation and the construction of dams to produce hydroelectricity (Marcelo-Peña et al. 2016).
[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: low confidence
[AERP]

Sources

  • Angiosperm Extinction Risk Predictions v1

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

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • 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 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