Crotalaria gamwelliae Baker f.

First published in J. Bot. 76: 20 (1938)
This species is accepted
The native range of this species is SW. Tanzania to E. Zambia. It is an annual and grows primarily in the seasonally dry tropical biome.

Descriptions

Leguminosae, various authors. Flora Zambesiaca 3:7. 2003

Morphology General Habit
Erect annual, 30–70 cm tall, developing ascending branches from the base and ultimately many short flowering branches near the top; stem slender, appressed pubescent.
Morphology Leaves
Leaves mostly 3-foliolate, the upper ones 1-foliolate; leaflets 10–30 × 2–10 mm, mostly linear-oblanceolate to oblong-oblanceolate, the lower ones sometimes more obovate, glabrous or nearly so above, finely appressed pubescent beneath; petiole 4–20 mm long; stipules 0.
Morphology Reproductive morphology Inflorescences
Racemes 6–15(30) cm long, lax or upper part dense, main ones 16–40-flowered, other short racemes and clusters of flowers in the axils below; bracts 2–3 mm long, linear, shorter than the pedicel; bracteoles on upper part of the pedicel, setaceous.
Morphology Reproductive morphology Flowers Calyx
Calyx 4–5 mm long, appressed pubescent; upper lobes attenuate-triangular, c. 2–3 times as long as the tube.
Morphology Reproductive morphology Flowers Corolla
Standard elliptic-obovate, yellow, often veined reddish-brown, pubescent medially and apically outside; wings shorter than the keel; keel 8–11 mm long, angular, with a narrow twisted beak, slightly incurved at the tip.
Morphology Reproductive morphology Fruits
Pods subsessile, 4–6 × 4 mm, subglobose-ovoid, slightly pointed, appressed pubescent, 2-seeded.
Morphology Reproductive morphology Seeds
Seeds 2–3 mm long, rounded-cordiform, smooth, with a prominent aril.
[FZ]

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

Morphology General Habit
Erect annual, up to 7 dm. tall, often with a number of ascending branches from the base and ultimately numerous short almost leafless flowering branches near the top.
Morphology Stem
Stem slender, shortly appressed pubescent.
Morphology Leaves
Leaves mostly 3-foliolate, the upper ones 1-foliolate; leaflets oblanceolate to oblong-oblanceolate, the lower ones sometimes obovate, up to 18–30 mm. long and 3–8 mm. wide, obtuse to rounded or truncate at the apex, glabrous or with a few small scattered hairs above, finely appressed pubescent beneath; petiole ± 4–20 mm. long.
Morphology Leaves Stipules
Stipules absent.
Morphology Reproductive morphology Inflorescences
Racemes mostly pedunculate, lax to rather dense, many-flowered, and usually with other short racemes or clusters of flowers in the axils below; bracts linear, 2–3 mm. long, shorter than the pedicel; bracteoles inserted on the upper part of the pedicel, filiform, 0·5–1·5 mm. long.
Morphology Reproductive morphology Flowers Calyx
Calyx 4–5 mm. long, with the tube protracted on the lower side, rather shortly appressed pubescent; upper lobes subulate-triangular, ± 2–3 times as long as the tube.
Morphology Reproductive morphology Flowers Corolla
Standard elliptic-obovate, yellow, often veined brown outside, pubescent medially and apically outside; wings much shorter than the keel; keel bent at right-angles in the lower quarter, with a long very narrow twisted beak, slightly incurved at the tip, 8–11 mm. long.
Morphology Reproductive morphology Fruits
Pod subsessile, subglobose-ovoid, slightly pointed, up to 4–5 mm. long, appressed pubescent, 2-seeded.
Morphology Reproductive morphology Seeds
Seeds suborbicular-cordiform, ± 2 mm. across, with a prominent aril, smooth, brown.
Habitat
Brachystegia woodland, also persisting on cultivated ground; 1200–1500 m.
Distribution
T4 T7
[FTEA]

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]

International Legume Database and Information Service

Conservation
Not Threatened
Morphology General Habit
Annual, Not climbing, Herb
[ILDIS]

Sources

  • Angiosperm Extinction Risk Predictions v1

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

  • Flora Zambesiaca

    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • 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