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  1. Family: Fabaceae Lindl.
    1. Genus: Vigna Savi
      1. Vigna longissima Hutch.

        This species is accepted, and its native range is Nigeria to Tanzania and Zambia.

    [ILDIS]

    International Legume Database and Information Service

    Conservation
    Not Threatened
    Ecology
    Africa: Zambezian woodland, Sudanian woodland
    Habit
    Perennial, Climbing/Not climbing, Herb
    [FWTA]

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

    Habit
    A slender herb with laxly pilose, prostrate, or perhaps twining, stems
    Flowers
    Fairly large mauve flowers.
    [FZ]

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

    Habit
    Perennial erect herb, 20–50 cm tall, sometimes trailing up to 1 m long.
    Stem
    Stem sparsely hairy.
    Leaflets
    Leaflets 3, 13–25 × 0.5–1.2 cm, acute, cuneate at the base, sparsely pubescent, 3-nerved from the base to almost the tip; petiole 4.5–7 cm long; rhachis reduced to a pulvinus; stipules 7 × 1.5–2 mm, multinerved, bilobed at the base.
    Inflorescences
    Peduncle 20–30 cm × 0.8–2 mm, sparsely hairy; rhachis 0–4 mm long, 1–2-noded, internodes 1–3 mm long.
    Flowers
    Flower purple, 12–19 mm long; pedicel 1 mm long, not expanding as the pod matures; bracteoles 1.5–4 mm long, filiform, 1-nerved.
    Calyx
    Calyx pubescent; tube c. 3 mm long; lobes 5–8 mm long, acute, the lower longer, the upper two united for half their length.
    Corolla
    Standard asymmetrical, without appendages; keel with a small obtuse pocket on the left-hand petal, twisted towards the right.
    Ovary
    Ovary 15–23-ovuled.
    Fruits
    Pod c. 5 cm × c. 3 mm, linear cylindrical, with a straight beak, ± hairy.
    Seeds
    Seed c. 2 × 2 mm wide, hilum central, rim aril present.

    Images

    Distribution

    Native to:

    Cameroon, Nigeria, Tanzania, Zambia, Zaïre

    Other Data

    Vigna longissima Hutch. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Lely, H.V. [360], Nigeria K000263379 holotype

    Bibliography

    First published in Bull. Misc. Inform. Kew 1921: 367 (1921)

    Accepted by

    • 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.

    Literature

    Flora of West Tropical Africa

    • Wilczek in Fl. Congo Belge 6: 377.
    • Bak. f. Leg. Trop. Afr. 2: 414
    • in Kew Bull. 1921: 367

    Kew Backbone Distributions

    • Mackinder, B., Pasquet, R., Polhill, R. & Verdcourt, B. (2001). Flora Zambesiaca 3(5): 1-261. Royal Botanic Gardens, Kew.

    International Legume Database and Information Service

    • Hepper, F. N. (1958). Papilionoideae. In: Flora West Tropical Africa. Keay, R. W. J.
    • Robyns, W. (Ed.) (1954). Flore du Congo Belge Vol. 6. Dalbergieae, Vicieae, Phaseoleae

    Sources

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

    Flora of West Tropical Africa
    Flora of West Tropical 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