Rhynchosia calobotrya Harms

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

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

Morphology General Habit

Climbing herb, probably several metres long and possibly woody at the base.

Morphology Stem

Stems slightly ridged, velvety with short dense pale ferruginous hairs.

Morphology Leaves

Leaflets 3, the terminal one rounded-rhomboid or oblate-rhomboid, the laterals obliquely ovate, 2·7–6 cm. long, 2–5·6 cm. wide, very broadly subacute and mucronulate at the apex, broadly rounded and minutely emarginate at the base, softly velvety on both surfaces with short grey hairs but gland-dots very obscure; petiole 3–7 cm. long; rhachis 1·2–2 cm. long; petiolules 2–3 mm. long; stipules lanceolate, 6–10 mm. long, hairy outside.

Morphology Reproductive morphology Inflorescences

Inflorescences axillary; rhachis 7–18 cm. long, with a secondary branch at the base (at the top of the peduncle) supported by a stipule-like bract; peduncle 7–9 cm. long; pedicels 2 mm. long; bracts ovate or ovate-lanceolate, 6–8(–10) mm. long, 3–4 mm. wide, acuminate, pubescent.

Morphology Reproductive morphology Flowers Calyx

Calyx densely hairy but with very few gland-dots; tube 3–4 mm. long; lobes very unequal, the lowest conspicuously the longest, narrowly linear-lanceolate, 1·2–1·4 cm. long, ± 2·5 mm. wide; lateral lobes 9 mm. long, ±1·5 mm. wide; upper pair joined for almost half-way to form a lobe ± 9 mm. long divided into fine linear segments at the apex.

Morphology Reproductive morphology Flowers Corolla

Corolla golden-yellow, marked with brown but drying uniform brown with veins obscure; standard elliptic-obovate, 1·8 cm. long, 1·05 cm. wide, densely pubescent.

Morphology Reproductive morphology Flowers Gynoecium Ovary

Ovary densely long-pilose.

Morphology Reproductive morphology Fruits

Pods not known.

Habitat

Not known, presumably fringing woodland or bushland around lake shore; 200m.

Distribution

T8 not known elsewhere

International Legume Database and Information Service

Conservation

Insufficiently known

Ecology

Africa: Zanzibar-Inhambane regional transition zone; bushland and thicket.

Morphology General Habit

Perennial, Climbing, Herb