Crotalaria trinervia Polhill

First published in Crotalaria Africa & Madagascar: 231 (1982)
This species is accepted
The native range of this species is W. Zambia. It is a perennial 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: threatened. Confidence: confident
[AERP]

International Legume Database and Information Service

Conservation
Insufficiently known
Ecology
Africa: Zambezian woodland
Morphology General Habit
Perennial, Not climbing, Herb
[ILDIS]

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

Morphology General Habit
Perennial herb, with 1–many stems from a horizontal woody rootstock; stems erect, up to 1.5 m tall, simple or branched above, 4-angular, strongly ribbed, glabrous.
Morphology Leaves
Leaves mostly 1-foliolate, the uppermost reduced to undifferentiated linear structures; leaflets up to 5–15 × 0.3–2 cm, mostly linear to attenuate-lanceolate, the upper ones the narrower, the lowermost oblanceolate to oblong-obovate and smaller again, mostly long-apiculate, rather leathery, glabrous or with a few scattered hairs beneath; lateral nerves steeply ascending, the second pair running near the margin far into the upper half; petiole 1–3 mm long; stipules 3–10 mm long, linear-subulate.
Morphology Reproductive morphology Inflorescences
Racemes laxly 6–16-flowered; bracts linear-subulate, 1.5–3 mm long; bracteoles variously inserted on the pedicel, smaller.
Morphology Reproductive morphology Flowers Calyx
Calyx 7–8 mm long, glabrous; lobes narrowly attenuate-triangular, nearly twice as long as the tube, becoming reflexed.
Morphology Reproductive morphology Flowers Corolla
Standard elliptic, pale violet inside and marginally outside, yellowish-brown with deep brown veins medially outside, glabrous; wings deep violet, shorter than the keel; keel 1.8–2.1 cm long, angular, sharply rounded near the base with a long practically straight beak.
Morphology Reproductive morphology Fruits
Young legumes shortly stipitate, oblong-ellipsoid, sparsely pubescent.
Morphology Reproductive morphology Seeds
Seeds not seen.
[FZ]

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

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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