Crotalaria vialis Milne-Redh.

First published in Bull. Misc. Inform. Kew 1933: 469 (1933)
This species is accepted
The native range of this species is S. Tanzania. 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: threatened. Confidence: confident
[AERP]

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

Morphology General Habit
Annual, with a short erect stem, up to 2·5 dm. tall, and long mostly procumbent lower branches.
Morphology Stem
Stem sparsely to rather densely spreading pilose.
Morphology Leaves
Leaves shortly petiolate, 1-foliolate; leaflets ovate, up to 15–38 mm. long, 12–20 mm. wide, with those of the leading shoot relatively narrower, ovate-lanceolate, up to 65 mm. long and 28 mm. wide, subacute to rounded and minutely apiculate, cuneate to rounded at the base, glabrous above, thinly appressed pilose beneath; petiole 3–8 mm. long.
Morphology Leaves Stipules
Stipules filiform, 3–5 mm. long, with scattered bristly hairs.
Morphology Reproductive morphology Inflorescences
Racemes terminal and leaf-opposed, pedunculate, ± 2·5–6 cm. long, with up to 12 flowers rather crowded towards the top; bracts filiform, 4–5 mm. long; bracteoles inserted at the top of the pedicel, similar to the bract.
Morphology Reproductive morphology Flowers Calyx
Calyx ultimately reflexed against the pedicel, 7–9 mm. long, pilose; lobes narrow, 2–3 times as long as the tube.
Morphology Reproductive morphology Flowers Corolla
Standard suborbicular or oblate, china-blue, with a violet median line and veins and a bright yellow basal zone, glabrous outside; wings ± as long as the keel, china-blue; keel rounded about the middle, with a slight crest preceding the incurved bluntly pointed untwisted beak, up to 8 mm. long, greenish.
Morphology Reproductive morphology Fruits
Pod subsessile, ellipsoid, up to 14 mm. long, 8 mm. across, rather densely spreading pilose, up to 16-seeded.
Morphology Reproductive morphology Seeds
Seeds oblique-cordiform, ± 3 mm. long, wrinkled, terracotta.
Habitat
Deciduous bushland, often on sandy soil, also persisting on roadsides and cultivated ground; 1200–1650 m.
Distribution
T7 not known elsewhere
[FTEA]

International Legume Database and Information Service

Conservation
Insufficiently known
Ecology
Africa: Zambezian anthropic landscapes.
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 of Tropical East Africa

    • Flora of Tropical East Africa
    • 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