African Plant Database

Dioscorea buchananii Benth.
Protologue : Hooker's Icon. Pl. 14: 76, t.1397 (1882)  
Information on the genus : Dioscorea
Status for TA : accepted (present)
Synonym(s) Heterotypic
=Dioscorea buchananii var. ukamensis R. Knuth
=Dioscorea mildbraediana R. Knuth (1934)
=Dioscorea rhacodes R. Knuth (1937)
Ecology and distribution
Trop. Afr.
Biology : Left-twining vine to 10 m long; tuber woody, globose to ovoid, glabrous; stems unarmed, terete, glabrous, to 5 mm Ø, bulbils absent; leaves alternate; blade entire or with 3-7 shallow to deep lobes, apex acute or rarely obtuse; inflorescences simple, male racemose with flower tepals on a saucer-shaped torus to 4 mm Ø; tepal apex acute to short-acuminate; perianth c. 1-1,3 cm Ø when flattened; capsule 2,2-3x2-3,2 cm; seed with a broad wing at each end and joined by a narrower wing.
Ecology : Near rock outcrops in woodland; Combretum thickets; Brachystegia woodland; termitaria; riverine forest; near mangrove swamps; limestone, and granite substrates; 0-1600 m alt.
  Has been confused with D. rupicola Kunth (S. African sp.) in Zimbabwe, Mozambique.
  The largest-flowered Dioscorea in Africa.
  • PhytoKeys 48: 51-72 (2015).
    More info on :
    see under Jstor_African Plant Initiative
    see under Flora of Mozambique
    see under Flora of Zimbabwe
    carte afrique num 11256
    Record n°11256
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