African Plant Database


Dioscorea schimperiana Hochst. ex Kunth
Family : DIOSCOREACEAE
Protologue : Enum. Pl. (Kunth) 5: 339 (1850) 
Information on the genus : Dioscorea
 
 
Status
Status for TA : accepted (present)
 
Synonym(s) Heterotypic
=Dioscorea fulvida Stapf (1906)
=Dioscorea hockii De Wild. (1911)
=Dioscorea schimperiana var. adamaouense Jacq.-Fél.
=Dioscorea schimperiana var. vestita Pax
=Dioscorea stellatopilosa De Wild. (1912)
 
Ecology and distribution
Trop. Afr.
Biology : Robust climber, right-twining, or scrambling, 3-8 m long; stem stout, densely appressed-pubescent, rarely with small prickles below; indumentum of stellate to dendroid hairs; bulbils often present in leaf axils, subglobose, to 1 cm Ø, ± ovoid, tuberculate, soon falling; tubers solitary, replaced annually, cylindric, descending vertically into soil, to 75 cm long, 4,5 cm Ø, branched for at least 15 cm; petiole to 10-14 cm long; blade heart-shaped, to 14 cm long and broad, with dense greyish stellate hairs beneath, acumen acute, thickened; inflorescence descending, spicate; male: to 5-8 per leaf-axil, or at leafless nodes at ends of the branches, to 10-20 cm long; flowers sessile, 6 stamens fertile; perianth cup-shaped, c. 2 mm across; female: to 4 per leaf-axil, to 16-20 cm long; capsule stellate-pubescent, 2,5-3,3 cm Ø; seeds winged all round.
Ecology : Wooded grassland with Combretum molle, C. collinum, Entada abyssinica, Erythrina abyssinica, Pennisetum purpureum, Hyparrhenia rufa (grasses dominant); edges and clearings in rain-forest; riverine forest; woodland; tall-grass grassland; often on termite hills; ravines; road-sides; among rocks; riverbanks; Brachystegia woodland; generally in more open or disturbed areas; Acacia seyal, Entada abyssinica, Stereospermum kunthianum woodland; dark-brown loamy soil or lava; clayey-sandy soils; 200-2100 m alt.
  Very variable, in particular in indumentum of leaves and colour of hairs on inflorescences, and in shape of fruits. Near D. hirtiflora.

Bibliography for Tropical Africa :
  • Darbyshire, I. Kordofami, M. & al. (2015). The plants of Sudan and south Sudan, An annoted checklist. Kew Publishing
 
More info on :
see under Jstor_African Plant Initiative
see under Flore d'Afrique Centrale
see under The International Plant Name Index
see under Flora of Mozambique
see under African Plants - a Photo Guide
see under Flora of Zimbabwe
 
Map
carte afrique num 11282
 
Record n°11282
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