Crotalaria pterocalyx Harms

First published in Notizbl. Bot. Gart. Berlin-Dahlem 13: 417 (1936)
This species is accepted
The native range of this species is E. Tanzania. It is a subshrub and grows primarily in the seasonally dry tropical biome.

Descriptions

Leguminosae, J. B. Gillett, R. M. Polhill & B. Verdcourt. Flora of Tropical East Africa. 1971

Morphology General Habit
Perennial, with several erect laxly branched stems from a well-developed rootstock, up to 2–10 dm. tall.
Morphology Stem
Stems closely white appressed pubescent.
Morphology Leaves
Leaves 3-foliolate; leaflets elliptic, oblong or obovate, up to 30–100 mm. long, 15–48 mm. wide, shortly and bluntly acuminate, cuneate, glabrous or almost so above, shortly appressed pubescent beneath; petiole 20–85 mm. long.
Morphology Leaves Stipules
Stipules linear, ± 1 mm. long, caducous.
Morphology Reproductive morphology Inflorescences
Racemes up to 4–15 cm. long, with rather numerous fairly closely arranged flowers above; bracts lanceolate, 1–1·5 mm. long; bracteoles obliquely inserted at the base of the calyx, semi-ovate to suboblong-ovate, 4–6 mm. long, 2–3 mm. wide.
Morphology Reproductive morphology Flowers Calyx
Calyx 5–7 mm. long, shortly pubescent; lobes acuminately triangular, ± as long as the tube.
Morphology Reproductive morphology Flowers Corolla
Standard ovate, yellow, faintly flushed brown outside, glabrous outside; wings nearly as long as the keel; keel strongly rounded, with a long rather projecting untwisted beak, 12–13 mm. long, lanate-puberulous along the upper margin.
Morphology Reproductive morphology Fruits
Pod shortly stipitate, asymmetrically oblong-clavate, up to 40–45 mm. long, very thin-walled, subglabrous to pubescent outside, glabrous inside, ± 10–14-seeded.
Morphology Reproductive morphology Seeds
Mature seeds unknown.
Habitat
Open woodland, riverine thicket; 230–500 m.
Distribution
T6 T8 not known elsewhere
[FTEA]

International Legume Database and Information Service

Conservation
Insufficiently known
Ecology
Africa: Zanzibar-Inhambane regional transition zone ; woodland., Zanzibar-Inhambane regional transition zone; bushland and thicket.
Morphology General Habit
Perennial, Not climbing, Herb
[ILDIS]

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: threatened. Confidence: confident
[AERP]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/179697/1587302

Conservation
LC - least concern
[IUCN]

Sources

  • Angiosperm Extinction Risk Predictions v1

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

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • International Legume Database and Information Service

    • International Legume Database and Information Service (ILDIS) V10.39 Nov 2011
    • http://creativecommons.org/licenses/by/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

  • World Checklist of Vascular plants (WCVP)

    • 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