Vigna haumaniana R.Wilczek

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

Morphology General Habit

Erect subshrub, c. 0.7–1.2 m tall.

Morphology Stem

Stem branched, covered with dense whitish appressed pubescence.

Morphology Leaves Leaflets

Leaflets 3, rather thick, 1–3 × 0.75–3 cm, elliptic, round or rounded-ovate, rounded to emarginate but apiculate or more rarely acute at the apex, rounded or very slightly subcordate at the base, sparsely puberulous above, appressed silky pubescent beneath; venation raised on both surfaces; petiole 0.5–2 cm long; rhachis 0.2–1 cm long; stipules 1.5–3 mm long, linear, truncate and thickened at the base, 1-nerved.

Morphology Reproductive morphology Inflorescences

Peduncle 0–0.3 cm × 1–1.5 mm, pubescent; rhachis 0.5–1 cm long, 4–14-noded, internodes 0.5–1 mm long.

Morphology Reproductive morphology Flowers

Flower yellow, 10–16 × 12–17 mm; pedicel 0.5–3 mm long, expanding as the pod matures; bracteoles c. 1.5 mm long, ovate-lanceolate, 3-nerved.

Morphology Reproductive morphology Flowers Calyx

Calyx covered with white hairs; tube 2–3 mm long; lobes 1.5–3 mm long, deltate, ciliate, the lower as long as the laterals, the upper pair joined to form an emarginate lip.

Morphology Reproductive morphology Flowers Corolla

Standard with two central appendages; keel with an obtuse beak, twisted towards the left.

Morphology Reproductive morphology Flowers Gynoecium Ovary

Ovary 3–4-ovuled.

Morphology Reproductive morphology Fruits

Pods 3–4.5 cm × 4.5–6 mm, linear-oblanceolate, compressed, curved, sparsely white pubescent, with a curved beak.

Morphology Reproductive morphology Seeds

Seed 5–7.5 × 3–5 × 2.5 mm; hilum excentric; aril excentric.

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

Morphology General Habit

Erect subshrub, ± 0·7–1·2 m. tall.

Morphology Stem

Stems branched, covered with dense whitish adpressed pubescence.

Morphology Leaves

Leaflets 3, rather thick, elliptic, round or rounded-ovate, 0·9–2·8 cm. long, 0·75–3 cm. wide, rounded to emarginate but apiculate or more rarely acute at the apex, rounded or very slightly subcordate at the base, sparsely puberulous above, adpressed silky pubescent beneath; venation raised on both surfaces; petiole 0·3–2 cm. long; rhachis 2–10 mm. long; petiolules ± 1 mm. long; stipules linear, 1·5–3 mm. long, truncate and thickened at the base.

Morphology Reproductive morphology Inflorescences

Inflorescences axillary, few-flowered; rhachis markedly glandular-nodular, ± 1 cm. long; peduncles 0·2–3 cm. long; pedicels 1–2 mm. long; bracts ovate-lanceolate, 2–3 mm. long; bracteoles similar, 3-nerved.

Morphology Reproductive morphology Flowers Calyx

Calyx covered with white hairs; tube 2–3 mm. long; lobes deltoid, 1·5–2(–3) mm. long, ciliate, the upper pair joined to form a bifid lip.

Morphology Reproductive morphology Flowers Corolla

Standard yellow inside, brownish outside, oblate, 1–1·5 cm. long, 1·2–1·7 cm. wide, emarginate, glabrous; keel cream, the beak obtuse.

Morphology Reproductive morphology Fruits

Pods linear-oblanceolate, somewhat curved or straight, 2·8–4·4 cm. long, 4–6 mm. wide, sparsely white pubescent, (1–)3–4 seeded.

Morphology Reproductive morphology Seeds

Seeds brown, narrowly oblong, longest dimension 5–7·5 mm., shorter dimension 3–5 mm., 2·5 mm. thick; aril eccentric, with crenellate margins.

International Legume Database and Information Service

Conservation

Not Threatened

Ecology

Africa: Zambezian woodland

Morphology General Habit

Perennial, Not climbing, Herb/Shrub