Plate 1 figs. a–f · 2 observations
This species has been photographed under an open licence only 2 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.
Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.
Native range 25 botanical countries
| Region | TDWG code | Continent |
|---|---|---|
| Angola | ANG | AFRICA |
| Benin | BEN | |
| Botswana | BOT | |
| Burundi | BUR | |
| Cameroon | CMN | |
| Cape Provinces | CPP | |
| Central African Republic | CAF | |
| DR Congo | ZAI | |
| Eswatini | SWZ | |
| Ethiopia | ETH | |
| Ghana | GHA | |
| Kenya | KEN | |
| KwaZulu-Natal | NAT | |
| Malawi | MLW | |
| Mozambique | MOZ | |
| Namibia | NAM | |
| Nigeria | NGA | |
| Northern Provinces | TVL | |
| Rwanda | RWA | |
| Sudan-South Sudan | SUD | |
| Tanzania | TAN | |
| Togo | TOG | |
| Uganda | UGA | |
| Zambia | ZAM | |
| Zimbabwe | ZIM |
Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.
Where it actually grows measured, from 32 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | 4.3 °C | 6.8 °C | 14.4 °C |
| Warmest month, mean daily high | 27.3 °C | 29.9 °C | 33.1 °C |
| Annual rainfall | 317 mm | 424 mm | 905 mm |
| Rainfall in the driest quarter | 1 mm | 5 mm | 49 mm |
It is barely found anywhere that freezes. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 32 research-grade observations of Vigna frutescens that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.
This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.
Also published as 21 synonyms
A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.
- Liebrechtsia esculenta De Wild.
- Liebrechtsia katangensis De Wild.
- Liebrechtsia kotschyi (Schweinf.) De Wild.
- Vigna buchneri Harms
- Vigna decipiens Harv.
- Vigna esculenta (De Wild.) De Wild.
- Vigna fragrans Baker f.
- Vigna glandulosa Chiov.
- Vigna harmsiana Buscal. & Muschl.
- Vigna incana Taub.
- Vigna katangensis (De Wild.) T.Durand & H.Durand
- Vigna keniensis Harms
- Vigna kotschyi Schweinf.
- Vigna ledermannii Harms
- Vigna longiloba Burtt Davy
- Vigna neumannii Harms
- Vigna pongolensis Burtt Davy
- Vigna pseudotriloba Harms
- Vigna sudanica Baker f.
- Vigna taubertii Volkens ex Harms
- Vigna violacea Hutch.
Sourcesevery claim on this page
- World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
- iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
- Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.
We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.