1. Family: Fabaceae Lindl.
    1. Genus: Crotalaria L.
      1. Crotalaria involutifolia Polhill

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

    [FTEA]

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

    Habit
    Suberect delicate annual, up to 1–5 dm. tall.
    Stem
    Stem very slender, laxly branched, sparsely appressed puberulous, glabrescent.
    Leaves
    Leaves sessile, simple; blade linear to linear-oblanceolate, up to 12–38 mm. long, 0·5–2 mm. wide, acute or bluntly pointed, apiculate, narrowed to the base, with the margins mostly inrolled at least to some extent, glabrous or sparsely puberulous above, sparsely appressed puberulous and often glabrescent beneath.
    Stipules
    Stipules filiform, minute or apparently absent.
    Inflorescences
    Racemes slenderly pedunculate, up to 4–12 cm. long, with ± 2–8 widely spaced flowers on the slender rhachis; bracts filiform, ± 0·5–1 mm. long; bracteoles inserted at the base of the calyx, minute.
    Calyx
    Calyx 2·5–3·5 mm. long, puberulous; lobes acuminately triangular, usually a little longer than the tube.
    Corolla
    Standard obovate-orbicular, yellow, usually veined reddish-brown and glabrous outside; wings a little shorter to a little longer than the keel; keel rather abruptly rounded below the middle, with a short straight or slightly incurved acute untwisted beak, 3·5–6·5 mm. long.
    Fruits
    Pod subsessile, narrowly cylindrical, 9–14 mm. long, 2–2·5 mm. across, pubescent, ultimately glabrescent, ± 18–22-seeded.
    Seeds
    Seeds oblique-cordiform, ± 1–1·2 mm. long, smooth, brown.
    Habitat
    Marshy grassland; 1800 m.
    Distribution
    T4
    [ILDIS]

    International Legume Database and Information Service

    Conservation
    Not Threatened
    Ecology
    Africa: Sudanian grasslands, Zambezian grassland
    Habit
    Annual, Not climbing, Herb
    [FZ]

    Leguminosae, various authors. Flora Zambesiaca 3:7. 2003

    Habit
    Delicate ascending annual, up to 10–50 cm tall; stem very slender, laxly branched, sparsely appressed puberulous, glabrescent.
    Leaves
    Leaves sessile, simple; blade 10–40 × 0.5–2 mm, linear to linear-oblanceolate, with the margins usually at least partially inrolled, sparsely puberulous, often glabrescent; stipules minute or apparently lacking.
    Inflorescences
    Racemes with 2–8 widely spaced flowers on the ± filiform rhachis; bracts 0.5–1 mm long, setaceous; bracteoles inserted at base of the calyx, minute.
    Calyx
    Calyx 2.5–3.5 mm long, puberulous; lobes acuminately triangular, usually a little longer than the tube.
    Corolla
    Standard obovate-circular, yellow, veined reddish-brown outside; wings a little shorter to a little longer than the keel; keel (3.5)4–6.5 mm long, rather abruptly rounded below the middle, with a short straight or slightly incurved beak.
    Fruits
    Pod subsessile, 9–14 × 2–2.5 mm, narrowly cylindrical, pubescent, ultimately glabrescent, 18–22-seeded.
    Seeds
    Seeds 1–1.2 mm long, oblique-cordiform, smooth, brown.

    Images

    Distribution

    Native to:

    Cameroon, Tanzania, Zambia, Zaïre

    Crotalaria involutifolia Polhill appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Feb 1, 1965 Richards, H.M. [15885], Tanzania K000412643 holotype
    Bidgood, S. [5480], Tanzania K000190710

    First published in Kew Bull. 22: 293 (1968)

    Accepted by

    • Pope, G.V., Polhill, R.N. & Martins, E.S. (eds.) (2003). Flora Zambesiaca 3(7): 1-274. Royal Botanic Gardens, Kew.
    • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
    • Lock, J.M. (1989). Legumes of Africa a check-list: 1-619. Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Pope, G.V., Polhill, R.N. & Martins, E.S. (eds.) (2003). Flora Zambesiaca 3(7): 1-274. Royal Botanic Gardens, Kew.
    Flora of Tropical East Africa
    • Polhill in Kew Bulletin 22: 293, fig. 27/1–11 (1968).
    International Legume Database and Information Service
    • Polhill, R. M. (1982). A. A. Balkema, Rotterdam 389pp Crotalaria in Africa & Madagasca

    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 2019. 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 2019. 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