Crotalaria morumbensis Baker f.

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

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

Morphology General Habit

Erect annual, 0.2–1.5 m tall, developing a few ascending branches only on older plants; stem obscurely ribbed, covered with fine longish (0.5–1 mm) subappressed hairs.

Morphology Leaves

Leaves 1-foliolate; basal leaflets 2–4.5 × 0.8–2 cm, obovate-elliptic, elliptic or oblong, grading to linear-lanceolate above, c. 4.5–9 × 0.3–0.7 cm, glabrous to sparsely pubescent above, thinly appressed pubescent beneath; petiole c. 2–3 mm long; stipules 2–4 mm long, setaceous.

Morphology Reproductive morphology Inflorescences

Racemes terminal, subsessile, 5–25 cm long, subdensely many-flowered, developing clusters of flowers and short racemes from axils of upper reduced leaves; bracts 2–3 mm long, linear; bracteoles on the pedicel, 0.5–1 mm long.

Morphology Reproductive morphology Flowers Calyx

Calyx 3.5–4 mm long, densely subappressed pubescent; lobes narrowly attenuate-triangular, 2–3 times as long as the tube.

Morphology Reproductive morphology Flowers Corolla

Standard elliptic, yellow, lined reddish, thinly pubescent outside; wings a little shorter than the keel; keel 7–8.5 mm long, angular, with a long narrow twisted beak, slightly incurved at the tip.

Morphology Reproductive morphology Fruits

Pod sessile, 5–6 × 3–4 mm, shortly oblong-obovoid, pubescent outside and along the suture inside, 2-seeded.

Morphology Reproductive morphology Seeds

Seeds c. 3 mm long, oblique-cordiform, smooth, yellow to greyish-green or purplish.

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

Morphology General Habit

Erect annual, up to 1 m. tall, simple at first, only developing laxly inserted ascending branches above in the older plants.

Morphology Stem

Stem slightly ribbed, densely covered with rather long fine subappressed hairs.

Morphology Leaves

Leaves 1-foliolate; leaflets below obovate-elliptic, up to 38–43 mm. long, 13–20 mm. wide, grading to linear-lanceolate above, up to 45–90 mm. long, 3–7 mm. wide, acute or rounded at the apex and prominently apiculate, glabrous or sparsely pubescent above, thinly appressed pubescent beneath; petiole ± 2–3 mm. long.

Morphology Leaves Stipules

Stipules filiform, up to 3 mm. long, rather persistent.

Morphology Reproductive morphology Inflorescences

Racemes long, subsessile, terminal, up to 25 cm. long, with many fairly closely arranged flowers, and sometimes other flowers clustered in the axils or on abbreviated racemes below; bracts linear, up to 2–3 mm. long; bracteoles inconspicuous.

Morphology Reproductive morphology Flowers Calyx

Calyx 3·5–4 mm. long, with the tube protracted on the lower side, subappressed pubescent; upper lobes subulate-triangular, 2–3 times as long as the tube.

Morphology Reproductive morphology Flowers Corolla

Standard elliptic, yellow, thinly pubescent outside; wings shorter than the keel; keel bent at right-angles in the lower third, with a long narrow twisted beak, 7–8·5 mm. long.

Morphology Reproductive morphology Fruits

Pod sessile, oblong-ellipsoid, 5–6 mm. long, 3–4 mm. across, pubescent outside, pubescent along the suture inside, 2-seeded.

Morphology Reproductive morphology Seeds

Seeds oblique-cordiform, up to 3 mm. long, smooth, greyish-green to purplish.

Habitat

Old cultivations, probably also in Brachystegia woodland; 1650 m.

Distribution

T7

International Legume Database and Information Service

Conservation

Not Threatened

Ecology

Africa: Zambezian woodland

Morphology General Habit

Annual, Not climbing, Herb