African Plant Database


Dioscorea abyssinica Hochst. ex Kunth
Family : DIOSCOREACEAE
Protologue : Enum. Pl. (Kunth) 5: 387 (1850) 
Notes : Current in Flora of Ethiopia vol. 6:60. " very close to D. sagittifolia var. lecardii
Information on the genus : Dioscorea
 
 
Status
Status for TA : accepted (present)
 
Ecology and distribution
Trop. Afr.
Biology : Climber with stems 2-5 m long, unarmed, glabrous; tubers deep-set, annual, (edible), cylindrical, to 6x2-3 cm; roots unarmed; leaves usually opposite, cordate to ovate, 4-12x2-6 cm, basal lobes ± rounded, length/width ratio < 1,8, acuminate, 5-7 nerved; male inflorescences of 3-6 spikes, 2-10 cm long, in leaf axils; male flower with suborbicular segments; female inflorescences of 1-2 spikes, 8-15 cm long in leaf axils; perianth 1-1,5 mm long, white or grey, base thickish, not scarious; flower axis stout; capsule as long as wide; seed with wing all round.
Ecology : Woodland or wooded grassland with Combretum, Terminalia, Stereospermum, Oxythenanthera; 1000-1800 m alt. (Ethiopia).
  Perhaps from Senegal to Ethiopia (map in Hamon & al, 1995: 58) but confused in some floras with D. sagittifolia and other species. The relations with D. praehensilis, D. cayenensis and D. liebrechsiana are also not clear.
  The supposed wide distribution area of D. abyssinica needs to be confirmed by further field observations and morphological studies in comparison with the D. cayenensis complex.

Bibliography for Tropical Africa :
  • Darbyshire, I. Kordofami, M. & al. (2015). The plants of Sudan and south Sudan, An annoted checklist. Kew Publishing

Bibliography for Southern Africa :
  • LEBRUN, J. P. & A. L. STORK (1995). Enumération des plantes à fleurs d’Afrique tropicale. Monocotyledones: Limnocharitaceae à Poaceae. Énum. Pl. Fleurs Afr. Trop. 3: 96
 
More info on :
see under Jstor_African Plant Initiative
see under chg
see under Flore d'Afrique Centrale
see under Fgui
see under The International Plant Name Index
see under African Plants - a Photo Guide
 
Map
carte afrique num 11242
 
Record n°11242 modified 2007-04-04
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