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  1. Family: Fabaceae Lindl.
    1. Genus: Vigna Savi
      1. Vigna monophylla Taub.

        This species is accepted, and its native range is Ethiopia to Botswana.

    [FZ]

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

    Habit
    Perennial, erect, climbing or trailing herb, 14–60 cm tall, with slender often woody fusiform tuberous roots up to 7 × 1.5 cm.
    Stem
    Stem angled, glabrous or with sparse hairs.
    Leaves
    Leave simple; leaflet ovate to oblong-lanceolate or ± elliptic, 1.8–11.5 × 0.5–3 cm, acute or rounded but mucronulate at the apex, rounded or very slightly emarginate at the base, glabrous or with a few hairs on the midrib beneath, margins sometimes ciliolate, ± 3-nerved from the base; venation raised and reticulate; petiole and rhachis reduced to a pulvinus c. 1.5 mm long, without stipels; stipules 1.5–4 × c. 1.5 mm, lanceolate, multinerved, bilobed at the base or not produced below the point of attachment.
    Inflorescences
    Peduncle 7–35 cm × 0.8–2 mm, winged, glabrescent to puberulous; rhachis 3–15 mm long, 2–9-noded, internodes 1–3 mm long.
    Flowers
    Flower variously described as yellow or white but mostly purple, 10–14 mm long; pedicel 1 mm long, not expanding as the pod matures; bracteoles 1–2 mm long, ovate-oblong, 1-nerved.
    Calyx
    Calyx glabrous or densely covered with small appressed blackish hairs; tube c. 2 mm long; lobes 1.5–2.5 mm long, subequal, upper lip emarginate or bidentate.
    Corolla
    Standard with two weak centrally placed appendages; keel with a short beak up to 2 mm long, slightly twisted towards the left.
    Anthers
    Alternate anthers with a pair of glands at the base.
    Pollen
    Pollen exine not reticulate.
    Pistil
    Ovary 12–16-ovuled; style tip almost not beaked.
    Fruits
    Pod 4–5 cm × c. 3–4 mm, linear-cylindrical, tomentellous to densely covered with dark brown hairs, with curved tip.
    Seeds
    Seed small, 1.5–2.5 mm in diameter, subglobose to cubic, white when fresh, cream-coloured later; hilum central; without an aril.
    [FTEA]

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

    Habit
    Erect, climbing or trailing herb, 14–60 cm. tall, with slender often woody fusiform tuberous roots up to 7 cm. long and 1·5 cm. wide.
    Stem
    Stems angled, glabrous or with sparse hairs.
    Leaves
    Leaves unifoliolate; leaflets ovate to oblong-lanceolate or ±elliptic, 1·8–11·5 cm. long, 0·5–3 cm. wide, acute or rounded but mucronulate at the apex, rounded or very slightly emarginate at the base, glabrous or with a few hairs on the midrib beneath, margins sometimes ciliolate, ± 3-nerved from the base; venation raised and reticulate; petiole ±1·5 cm. long; stipules persistent, lanceolate, 3–4 mm. long, 1·5 mm. wide.
    Inflorescences
    Racemes with rhachis 5–12 mm. long; peduncle 7–35 cm. long, ±winged, puberulous with stiff blackish hairs towards the apex or rarely glabrescent or pale; pedicels 1 mm. long; bracts and bracteoles ±deciduous, ovate-oblong, 1–2 mm. long.
    Calyx
    Calyx glabrous or densely covered with small adpressed blackish hairs; tube ±2 mm. long; lobes ±1·5–2·5 mm. long.
    Corolla
    Standard variously described as green, apricot, mauve, yellow or white but mostly purple, deeper inside and tinged greenish outside, round, 1–1·4 cm. long and wide, glabrous; wings purplish or green inside and magenta outside; keel greenish or white, often tipped with mauve.
    Anthers
    Alternate anthers with a pair of glands at their base.
    Fruits
    Pods held ±erect, cylindrical, 3·8–5 cm. long, 3–4 mm. wide, tomentellous to densely covered with dark brown hairs.
    Seeds
    Seeds reddish-brown, often speckled blackish, subglobose to cubic, 2–2·5 mm. in diameter.
    Figures
    Fig. 98, p. 662.
    Habitat
    Grassland, grassland with scattered trees, Brachystegia woodland, often on waterlogged clay soils; 840–2100(–2400) m.
    Distribution
    K2 K3 K5 T1 T4 T7 T8 U2 U3 U4
    [ILDIS]

    International Legume Database and Information Service

    Conservation
    Not Threatened
    Ecology
    Africa: Lake Victoria regional transition zone; woodland., Lake Victoria regional transition zone; grasslands, Zambezian wooded grassland, Zambezian grassland, Zambezian woodland, Sudanian grasslands, Sudanian woodland, Lake Victoria regional mosaic; wood
    Habit
    Perennial, Climbing/Not climbing, Herb

    Images

    Distribution

    Native to:

    Botswana, Burundi, Ethiopia, Kenya, Malawi, Rwanda, Tanzania, Uganda, Zambia, Zaïre, Zimbabwe

    Synonyms

    Other Data

    Vigna monophylla Taub. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Oct 7, 1952 Gardner [38], Zimbabwe K000263447 Unknown type material
    Dawe, M.T. [95], Uganda K000263438 neotype
    Milne-Redhead, E. [8443], Tanzania Haydonia monophylla 31112.000

    Bibliography

    First published in H.G.A.Engler, Pflanzenw. Ost-Afrikas, C: 223 (1895)

    Accepted by

    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa an annotated checklist Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.
    • Mackinder, B., Pasquet, R., Polhill, R. & Verdcourt, B. (2001). Flora Zambesiaca 3(5): 1-261. Royal Botanic Gardens, Kew.
    • Lock, J.M. (1989). Legumes of Africa a check-list: 1-619. Royal Botanic Gardens, Kew.
    • Troupin, G. (ed.) (1983). Flora du Rwanda 2: 1-603. Musee Royal de l'Afrique Centrale.

    Literature

    Kew Backbone Distributions

    • Mackinder, B., Pasquet, R., Polhill, R. & Verdcourt, B. (2001). Flora Zambesiaca 3(5): 1-261. Royal Botanic Gardens, Kew.
    • Lock, J.M. (1989). Legumes of Africa a check-list: 1-619. Royal Botanic Gardens, Kew.
    • Troupin, G. (ed.) (1983). Flora du Rwanda 2: 1-603. Musee Royal de l'Afrique Centrale.

    Flora of Tropical East Africa

    • Bak. f., Leguminosae of Tropical Africa: 414 (1929).
    • Taub. in Die Pflanzenwelt Ost-Afrikas und der Nachbargebiete, Theile C: 223 (1895).

    International Legume Database and Information Service

    • Gillett, J. B. et al. (1971). Papilionoideae. In: Fl. Trop. E. Africa, Milne-Redhead & Polhill

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    International Legume Database and Information Service
    International Legume Database and Information Service (ILDIS) V10.39 Nov 2011
    http://creativecommons.org/licenses/by/3.0

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0