Vigna multinervis Hutch. & Dalziel

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

Morphology General Habit

Perennial climbing or trailing herb, 0·3–2 m. long.

Morphology Stem

Stems slender, wiry, glabrous.

Morphology Leaves

Leaflets 3, oblong-lanceolate to lanceolate, 2·8–15 cm. long, 0·2–1·3 cm. wide, acuminate to somewhat rounded and mucronulate at the apex, rounded or subcordate at the base, rather thick, glabrous except for some marginal papillae; lateral nerves very numerous, forming a right-angle with the midrib; venation raised and reticulate on both surfaces; petiole 2–7·5 cm. long; rhachis 1–5 mm. long; petiolules ± 1·5 mm. long; stipules persistent, ovate-lanceolate, 2–4 mm. long, veined, prolonged and cordate at the base.

Morphology Reproductive morphology Inflorescences

Inflorescences axillary, few-flowered; rhachis 1–1·5 cm. long; peduncle 1–10 cm. long; pedicels 1·5–3 mm. long; bracteoles deciduous, ovate-lanceolate, 1·5–2 mm. long.

Morphology Reproductive morphology Flowers Calyx

Calyx glabrous or sparsely pubescent; tube ± 2 mm. long; lobes deltoid, 0·7–2 mm. long, the upper pair united to form a low slightly emarginate lip.

Morphology Reproductive morphology Flowers Corolla

Standard bright yellow inside, brownish outside or tinged pink, oblate, 8–10 mm. long, (5–)8–12 mm. wide, emarginate, glabrous; wings yellow, white below and with pink veins; keel whitish-green, the beak short and scarcely incurved.

Morphology Reproductive morphology Fruits

Pods linear-cylindrical, compressed, 3–6 cm. long, 3·5–5 mm. wide, glabrous or glabrescent, 4–10-seeded.

Morphology Reproductive morphology Seeds

Seeds ellipsoid or hoof-shaped, longest dimension 2·8–3 mm., shorter dimension 1·5–2 mm., 1·2 mm. thick; aril well developed, yellowish, eccentric.

Habitat

Grassland, often on stony soil; 1080–1350 m.

Distribution

T4 U1 U3 U4

International Legume Database and Information Service

Conservation

Not Threatened

Ecology

Africa: Sudanian grasslands, Lake Victoria regional transition zone; grasslands, Zambezian grassland

Morphology General Habit

Annual, Climbing/Not climbing, Herb

Leguminosae, B. Mackinder, R. Pasquet, R. Polhill and B. Verdcourt. Flora Zambesiaca 3:5. 2001

Morphology General Habit

Perennial climbing or trailing herb, 0.3–2 m long.

Morphology Stem

Stem slender, wiry, glabrous.

Morphology Leaves Leaflets

Leaflets 3, 6–15 × 0.2–1.3 cm, oblong-lanceolate to lanceolate, acuminate to somewhat rounded and mucronulate at the apex, rounded or subcordate at the base, rather thick, glabrous except for some marginal papillae; lateral nerves very numerous, forming a right-angle with the midrib; venation raised and reticulate on both surfaces; petiole 2–7.5 cm long; rhachis 1–5 mm long; stipules 2–4 mm long, ovate-lanceolate, prolonged and cordate at the base, multinerved.

Morphology Reproductive morphology Inflorescences

Peduncle 0.5–10 cm × 0.2–0.8 mm, glabrous; rhachis 0.2–1.5 cm long, 2–7-noded, internodes 1–5 mm long, rarely up to 8 mm.

Morphology Reproductive morphology Flowers

Flower yellow, 8–10 × 8–12 mm; pedicel 1.5–3 mm long, not expanding as the pod matures; bracteoles 1.5–2 mm long, ovate-lanceolate, 1-nerved.

Morphology Reproductive morphology Flowers Calyx

Calyx glabrous or sparsely pubescent; tube 2 mm long; lobes 1–2 mm long, deltate, ciliate, the lower as long as the laterals; upper pair united to form a slightly emarginate lip.

Morphology Reproductive morphology Flowers Corolla

Standard with two central appendages; keel slightly twisted towards the right, the beak short.

Morphology Reproductive morphology Flowers Gynoecium Ovary

Ovary 8–10-ovuled.

Morphology Reproductive morphology Fruits

Pod 5–6 cm × 4–5 mm, linear-cylindrical, almost straight, compressed, glabrous or glabrescent, with a small curved beak.

Morphology Reproductive morphology Seeds

Seed 2.8–3 × 1.5–2 × 1.2 mm; hilum excentric; aril excentric, well developed.

Seed Collecting Guide. RBG Kew (2013-2016)

Morphology General Habit

Perrenial climbing or trailing herb, 0.3-2 m long

Morphology Stem

stem slender, wiry, glabrous

Morphology Leaves

leaflets 3, 6-15 x 0.2-1.3 cm, oblong-lanceolate to lanceolate, acuminate to somewhat rounded and mucronulate at the apex, rounded or subcordate at the base, rather thick, glabrous except for some marginal papillae; lateral nerves very numerous, forming a right-angle with the midrib; venation raised and reticulate on both surfaces; petiole 2-7.5 cm long; rhachis 1-5 mm long; stipules 2-4 mm long, ovate-lanceolate, prolonged and cordate at the base, multinerved

Morphology Reproductive morphology Inflorescences Peduncles

peduncle 0.5-10 cm x 0.2-0.8 mm, glabrous, 2-7-noded, internodes 1-5 mm long, rarely up to 8 mm

Morphology Reproductive morphology Flowers

flower yellow, 8-10 x 8-12 mm; pedicel 1.5-3 mm long, not expanding as the pod matures; bracteoles 1.5-2 mm long, ovate-lanceolate, 1-nerved standard with two central appendages; keel slightly twisted towards the right, the beak short

Morphology Reproductive morphology Flowers Calyx

calyx glabrous or sparsely pubescent; tube 2 mm long; lobes 1-2 mm long, deltate, ciliate, lower as long as the laterals; upper pair united to form a slightly emarginate lip

Morphology Reproductive morphology Flowers Gynoecium Ovary

ovary 8-10-ovuled

Morphology Reproductive morphology Fruits

fruit pod 5-6 cm x 4-5 mm, linear-cylindrical, almost straight, compressed, glabrous or glabrescent, with a small curved beak

Morphology Reproductive morphology Seeds

2.8-3 x 1.5-2 x 1.2 mm; hilum excentric; aril excentric, well developed.

Ecology

grasslands, herbaceous savannahs, woody savannahs, dambos, permanently wet dunes, waste grounds, fallow fields and rarely in bogs, often on stony, sandy soil. altitude1 - 1850 m

Distribution

throughout Tropical Africa.

Conservation

least concerned

Phenology

Flower (highly variable), fruit (highly variable)

Papilionaceae, Hutchinson and Dalziel. Flora of West Tropical Africa 1:2. 1958

Morphology General Habit

A glabrous twiner, with wiry stems to 6 ft. long,

Morphology Reproductive morphology Flowers

Blue or yellow flowers

Ecology

Amongst grass, etc.