Crotalaria passerinoides Taub.

First published in H.G.A.Engler (ed.), Pflanzenw. Ost-Afrikas, C: 204 (1895)
This species is accepted
The native range of this species is SE. DR Congo to NE. Zambia. It is an annual 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]

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

Morphology General Habit
Similar to C. ringoetii but stems more leafy, the branches, if any, more crowded, the racemes subdense, the linear bracts as long as the pedicels, the standard becoming reddish lined and sometimes splotched but without red fringed dark yellow patches at the base inside, and the seeds with a prominent aril exceeding the hilar sinus.
[FZ]

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

Morphology General Habit
Erect annual, up to 6·5 dm. tall, simple or ultimately with ascending branches above.
Morphology Stem
Stem slender, appressed puberulous or pubescent.
Morphology Leaves
Leaves 1-foliolate; leaflets linear-oblanceolate to oblanceolate-oblong, up to 15–30 mm. long and 2·5–4 mm. wide, acute to rounded at the apex, glabrous above, thinly appressed puberulous or pubescent beneath; petiole up to 3 mm. long.
Morphology Leaves Stipules
Stipules absent.
Morphology Reproductive morphology Inflorescences
Racemes sessile, dense, up to 7 cm. long, many-flowered, developing other short racemes or clusters of flowers in many of the axils below; bracts linear, 1–3 mm. long, shorter or longer than the pedicel; bracteoles absent.
Morphology Reproductive morphology Flowers Calyx
Calyx 3–4 mm. long, with the tube protracted on the lower side, appressed puberulous or pubescent, sometimes rather sparsely so; upper lobes narrowly attenuate-triangular, longer than the tube.
Morphology Reproductive morphology Flowers Corolla
Standard broadly elliptic-obovate, yellow, veined reddish-brown, usually with at least a few hairs at the apex outside; wings shorter than the keel; keel bent at right-angles in the lower third, with a narrow twisted beak slightly incurved at the tip, 4–5 mm. long.
Morphology Reproductive morphology Fruits
Pod sessile, subglobose-ovoid, 4–5 mm. long, shortly appressed pubescent, 1–2-seeded.
Morphology Reproductive morphology Seeds
Seeds subcordiform, up to 2 mm. long, with a prominent aril, smooth, maroon or brown.
Habitat
Swampy or marshy depressions in general areas of Brachystegia woodland; 1200–1500 m.
Distribution
T4 T5
[FTEA]

International Legume Database and Information Service

Conservation
Not Threatened
Ecology
Africa: Zambezian grassland
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