Crotalaria jacksonii Baker f.

First published in J. Linn. Soc., Bot. 42: 279 (1914)
This species is accepted
The native range of this species is Central Kenya. It is a perennial or 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
Erect or ascending annual, up to 3·5 dm. tall, branched from the base.
Morphology Stem
Stem slender, pubescent with short stiff whitish appressed hairs.
Morphology Leaves
Leaves 3-foliolate; leaflets linear-oblanceolate to oblanceolate, up to 5–12 mm. long and 2–3·5 mm. wide, glabrous above, rather densely appressed pubescent beneath; petiole up to 4 mm. long.
Morphology Leaves Stipules
Stipules absent.
Morphology Reproductive morphology Inflorescences
Racemes or heads subsessile, dense, up to 1·5 cm. long, ± 10–20-flowered; bracts linear, up to 3 mm. long, shorter than the pedicel; bracteoles inserted on the pedicel, very small.
Morphology Reproductive morphology Flowers Calyx
Calyx 4–5 mm. long, with the tube protracted on the lower side, rather densely and shortly appressed pubescent; upper lobes narrowly attenuate-triangular, 2–3 times as long as the tube.
Morphology Reproductive morphology Flowers Corolla
Standard elliptic-obovate, yellow to slightly orange, veined brown and puberulous at the apex outside; wings shorter than the keel; keel bent at right-angles in the lower third, with a narrow practically straight twisted beak, 6–7·5 mm. long.
Morphology Reproductive morphology Fruits
Pod sessile, ellipsoid-oblong, up to 6 mm. long and 4 mm. across, appressed puberulous, ± 6–8-seeded.
Morphology Reproductive morphology Seeds
Seeds suborbicular-cordiform, ±1·5 mm. long, without a prominent aril, smooth, ochre.
Habitat
Upland grassland and margins of upland rain-forest; 2400–2700 m.
Distribution
K3 K4 not known elsewhere
[FTEA]

International Legume Database and Information Service

Conservation
Insufficiently known
Ecology
Africa: Afromontane(upland) bushland and thicket., Afromontane grassland
Morphology General Habit
Perennial, Not climbing, Herb/Shrub
[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/19892753/20046830

Conservation
VU - vulnerable
[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

  • Herbarium Catalogue Specimens

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