1. Family: Dioscoreaceae R.Br.
    1. Genus: Dioscorea Plum. ex L.
      1. Dioscorea asteriscus Burkill

        This species is accepted, and its native range is Kenya to Namibia.

    [FTEA]

    Dioscoreaceae, E. Milne-Redhead. Flora of Tropical East Africa. 1975

    Habit
    Tuber annual, spherical (fide Perdue & Kibuwa).
    Indumentum
    Plant glabrous.
    Stem
    Twining stems, up to 3 m. long.
    Leaves
    Leaves alternate; petiole up to 8 cm. long; blade heart-shaped, rather gradually narrowed to an acute acumen, up to 14(–18) cm. long and broad, often much smaller.
    Tubers
    Aerial tubers irregularly subglobose, up to 5 cm. in diameter, deep purplish.
    Inflorescences
    Inflorescences pendulous. Female inflorescences spicate, 1–3 per leaf-axil, up to 30 cm. long; flowers solitary at a node, directed downwards; perianth slightly spreading, ± 3(–6) mm. across. Ovary ± 4 mm. long, restricted just below the perianth. Male racemose, up to 4 per leaf-axil or forming a terminal leafless panicle; racemes 10(–15) cm. long; flowers standing out on 1–2 mm. long pedicels at right-angles to the axis; perianth in flower spreading, star-shaped, ± 4 mm. across; tepals lanceolate, very acute. Stamens 6.
    Male
    Male racemose, up to 4 per leaf-axil or forming a terminal leafless panicle; racemes 10(–15) cm. long; flowers standing out on 1–2 mm. long pedicels at right-angles to the axis; perianth in flower spreading, star-shaped, ± 4 mm. across; tepals lanceolate, very acute. Stamens 6.
    Female
    Female inflorescences spicate, 1–3 per leaf-axil, up to 30 cm. long; flowers solitary at a node, directed downwards; perianth slightly spreading, ± 3(–6) mm. across. Ovary ± 4 mm. long, restricted just below the perianth.
    Fruits
    Capsule as in fig. 1/3, p. 4, 2.5(–3) cm. long, 1.2–1.5 cm. in diameter, directed upwards.
    Seeds
    Seeds (fig. 1/3a) winged at basal end, 16 mm. long.
    Habitat
    Rain-forest, lowland dry evergreen forest, coastal evergreen bushland in forested ravines and among rocks in lower rainfall country; 0–1400(–2300) m.
    Distribution
    and South West Africa K5 K7 P T1 T2 T3 T5 T6 T8 U2 Z

    Images

    Distribution

    Doubtfully present in:

    Uganda

    Native to:

    Botswana, Central African Repu, Kenya, Malawi, Mozambique, Namibia, Rwanda, Tanzania, Zambia, Zaïre, Zimbabwe

    Dioscorea asteriscus Burkill appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Gillett, J.B. [24020], Kenya K001146773
    Drummond, R.B. [3055], Tanzania K001146783
    Drummond, R.B. [3055], Tanzania K001146784
    Drummond, R.B. [3110], Tanzania K001146785
    Drummond, R.B. [3110], Tanzania K001146786
    Chase, N.C. [5513], Zimbabwe K001147556
    Chase, N.C. [5513], Zimbabwe K001147557
    Chase, N.C. [5498], Zimbabwe K001147562
    Chase, N.C. [8410], Zimbabwe K001147563
    Robinson, E.A. [546], Zambia K001147541
    Robinson, E.A. [545], Zambia K001147552
    Robinson, E.A. [545], Zambia K001147553
    Fanshawe, D.B. [F7823], Zambia K001147540
    Fanshawe, D.B. [F3040], Zambia K001147545
    Fanshawe, D.B. [F9219], Zambia K001147546
    Fanshawe, D.B. [F4334], Zambia K001147549
    Fanshawe, D.B. [F9111], Zambia K001147550
    Fanshawe, D.B. [F9110], Zambia K001147551
    Angus, A. [951], Zambia K001147548
    Graham, R.M. [1909], Kenya K001146778
    Graham, R.M. [1909], Kenya K001146779
    Robertson, S.A. [5281], Kenya K001146776
    Faulkner, H.G. [4225], Tanzania K001146787
    Faulkner, H.G. [4584], Tanzania K001146788
    Faulkner, H.G. [4224b], Tanzania K001146789
    Faulkner, H.G. [3811], Tanzania K001146791
    Faulkner, H.G. [3200], Tanzania K001146810
    Hornby [503], Tanzania K001146797
    Hornby [503], Tanzania K001146798
    Hornby [503], Tanzania K001146800
    Bax, R.D. [402], Tanzania K001146793
    Bax, R.D. [402], Tanzania K001146794
    Mitchell, B.L. [16/67], Zambia K001147543
    Morze, G. [251], Zambia K001147542
    Schmitz, A. [361] K001146188
    Kirk [s.n.], Mozambique K001147535
    Gomes, A. [4287], Mozambique K001147536
    Gomes, A. [4287], Mozambique K001147537
    Batty, M. [1074], Tanzania 7535.000
    Batty, M. [1090], Tanzania 7668.000
    Harris, B.J. [1567], Tanzania K001146807
    Thulin, M. [2931], Tanzania K001146809
    Wild, H. [6069], Zimbabwe K001147558
    Wild, H. [4105], Zimbabwe K001147561
    Bingham, M.G. [10446], Zambia K001147555
    Semsei, S.R. [728], Tanzania K001146805
    Semsei, S.R. [s.n.], Tanzania K001146806
    Richards, H.M. [29006], Tanzania K001146808
    Richards, H.M. [12726], Zambia K001147544
    Luke, W.R.Q. [3202], Kenya K001146772
    Batty, M. [1090], United Kingdom K001146801
    Batty, M. [1090], Tanzania K001146802
    Batty, M. [436], Tanzania K001146803
    Batty, M. [436], Tanzania K001146804
    Bruce, E.M. [1083], Tanzania K001146799
    Pawek [4573], Malawi K001147554
    Polhill, R.M. [860], Kenya K001146780
    Holst, C. [3160], Tanzania K001146790
    Buchanan, J., C.M.G. [11], Malawi K000098568 Unknown type material
    Swynnerton, C.F.M. [98], Tanzania K001146795
    Swynnerton, C.F.M. [531], Zimbabwe K001147559
    Swynnerton, C.F.M. [531], Zimbabwe K001147560
    Perdue, R.E. [9379], Kenya K001146774
    Perdue, R.E. [9379], Kenya K001146775
    Robyns [1614], Congo, DRC K001146189
    Vaughan, J.H. [434A], Tanzania K001146811
    Vaughan, J.H. [434A], Tanzania K001146812
    Koritschoner [841], Tanzania K001146792
    Smith, P.A. [2700], Botswana K001147564
    Smith, P.A. [2337], Botswana K001147565
    Smith, P.A. [2316], Botswana K001147566
    Burrows, J.E. [10883], Mozambique K000738982
    Muasya, A.M. [2419a], Kenya K001146815
    Muasya, A.M. [2491b], Kenya K001146816
    Muasya, A.M. [2510], Kenya K001146817
    Kirika, P. [4/08/2008], Kenya K001146781
    Milne-Redhead, E.W.B.H. [s.n.], United Kingdom K001146814
    Cree, C.S. [254], Uganda K001146771
    s.coll [s.n.], United Kingdom K001146813
    s.coll [677b] K001147538
    s.coll [s.n.], Zambia K001147539
    s.coll [F11394], Zambia K001147547
    Martin, F.W. [15], Tanzania K001146782
    Martin, F.W. [9], Tanzania K001146796
    Someren, van [7164], Kenya K001146777

    First published in Bull. Jard. Bot. État Bruxelles 15: 356 (1939)

    Accepted by

    • Timberlake, J.R. & Martins, E.S. (eds.) (2009). Flora Zambesiaca 12(2): 1-208. Royal Botanic Gardens, Kew.
    • Govaerts, R., Wilkin, P. & Saunders, R.M.K. (2007). World Checklist of Dioscoreales. Yams and their allies: 1-65. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Govaerts, R. (2000). World Checklist of Seed Plants Database in ACCESS D: 1-30141.

    Literature

    Flora of Tropical East Africa
    • Verdc. & Trump, Common Poisonous Pl. E. Afr.: 192, fig. 20/h–j (1969).
    • Burkill in Bulletin du Jardin Botanique de l'État a Bruxelles 15: 356 (1939).

    Sources

    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/

    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