Vigna frutescens A.Rich.

Species

Angiosperms > Fabales > Fabaceae > Vigna

Characteristics

Perennial prostrate or climbing herb, 0·5–1·5 m. long, or erect at first and only 7–20 cm. tall when appearing after burns, sometimes flowering before the leaves appear; rootstock a woody tuber often 5 cm. wide.. Stems densely ferruginous pubescent, usually velvety, less often glabrous.. Leaflets 3, ovate, oblong-ovate or rhomboid (rarely hastate) in outline, 1·5–7·5(–9·5) cm. long, 1–4·7 cm. wide, entire to deeply 3-lobed, acute to slightly emarginate and mucronulate at the apex, broadly cuneate or rounded at the base, sparsely to densely velvety pubescent with rather short adpressed tubercular-based hairs or rarely glabrescent; petiole 1–5·5 cm. long; rhachis 2–10 mm. long; petiolules 1 mm. long; stipules oblong-lanceolate to lanceolate, 4·5–8 mm. long, slightly prolonged and cordate at the base.. Inflorescences axillary or terminal, subumbellate, several-flowered; peduncle 1·2–19 cm. long; pedicels 2–4 mm. long; bracteoles subpersistent, ovate-oblong, 1·5–2 mm. long.. Flowers scented.. Calyx practically glabrous to velvety pubescent; tube 3·5–5 mm. long; lobes triangular, 2–10 mm. long, the upper pair united for ± half their length.. Standard mauve-lilac or whitish, often greyish outside, usually with a yellow basal area inside surrounded by a darker deep purple zone, oblate, 1·5–2·6 cm. long, 1·5–2·8 cm. wide, emarginate, glabrous or velvety outside; wings pale mauve-lilac with very pale tips; keel very pale lilac, the beak short, slightly incurved.. Stigma produced as a subulate beak some 2 mm. beyond the stigma.. Pods held erect, linear-cylindrical, 6–11 cm. long, 4–5 mm. wide, ± pubescent with short adpressed hairs or almost glabrous, 12–16-seeded.. Seeds red-brown with dense black speckling, oblong-ellipsoid, longest dimension 3–5 mm., shorter dimension 2·5–3 mm., 2–2·8 mm. thick; hilum ± central, small; aril not developed.
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Perennial, pyrophytic climber, 0.1-1.0 m high/long; rootstock a woody tuber, plants ferruginous with velvety hairs, rarely glabrous. Leaflet trilobal to widely hastate, ± 60 x 48 mm, apex and base obtuse, venation trinerved from base, then reticulate; petioles 9-48 mm long. Stipules oblong-lanceolate, 4.5-8.0 mm long. Inflorescences of contracted racemes with several large flowers. Flowers precocious after grass fires. Calyx: lobes ± as long as tube. Petals: standard large, oblate, up to 30 mm in diam., repand; keel gently incurved, obtuse. Style with spathe-like beak, up to 2 mm long. Pod erect, 60-90 mm long, shortly beaked, brown, shortly appressed-hairy. Seeds 12-16.
A climbing herb. It grows 1.5 m long. It has a root tuber 5 cm across. The leaves have 3 leaflets. There are several flowers in a group. The flowers have a scent. The pods are erect and 6-11 cm long by 5-4 mm wide. The seeds are red-brown with red speckles.
Life form perennial
Growth form herb
Growth support climber
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1 - 1.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer rhizobia
Photosynthetic pathway -

Environment

Woodland with Combretum collinum, C. molle, Annona senegalensis; or with Combretum molle, Stereospermum kunthianum, Erythrina abyssinica, Entada abyssinica; Loudetia arundinacea grassland on shallow soil, mostly subject to seasonal burning; etc.
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It is a tropical plant.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses animal food environmental use fiber food gene source material
Edible roots tubers
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Vigna frutescens habit picture by susan brown (cc-by-sa)
Vigna frutescens habit picture by susan brown (cc-by-sa)

Leaf

Vigna frutescens leaf picture by susan brown (cc-by-sa)
Vigna frutescens leaf picture by susan brown (cc-by-sa)
Vigna frutescens leaf picture by susan brown (cc-by-sa)

Flower

Vigna frutescens flower picture by susan brown (cc-by-sa)
Vigna frutescens flower picture by Susan Brown (cc-by-sa)
Vigna frutescens flower picture by susan brown (cc-by-sa)

Fruit

Vigna frutescens fruit picture by susan brown (cc-by-sa)
Vigna frutescens fruit picture by susan brown (cc-by-sa)
Vigna frutescens fruit picture by susan brown (cc-by-sa)

Distribution

Vigna frutescens world distribution map, present in Angola, Botswana, Ethiopia, Kenya, Mali, Mozambique, Malawi, Nigeria, Rwanda, Sudan, Togo, Tanzania, United Republic of, Uganda, South Africa, Zambia, and Zimbabwe

Conservation status

Vigna frutescens threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:525352-1
WFO ID wfo-0000188133
COL ID 7G4HM
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Vigna buchneri Vigna frutescens var. frutescens Vigna frutescens

Lower taxons

Vigna frutescens subsp. frutescens Vigna frutescens subsp. incana Vigna frutescens subsp. kotschyi