African Plant Database

Dioscorea sublignosa R. Knuth
Protologue : Pflanzenr. (Engler) 304 (1924)
Information on the genus : Dioscorea
Status for TA : accepted (present)
Ecology and distribution
Trop. Afr.
Biology : According to the description (Engler, Pflanzenreich 4, 43: 304, 1924) the plant is a long climber; stems terete or barely angular, little-branched; leaves alternate and opposite; blade rotundate-cordate, 5-veined, 9x6,5 cm, glabrous, apex with acumen 2 cm long, base broadly cordate and yet cuneate-decurrent on petiole; petiole to 6 cm long, thick, canaliculate above; female spikes simple, solitary in leaf axils, c. 7 cm long. – In leaf form similar to D. preussii if one compares species occurring in the same area.
Ecology : Milne-Redhead (Fl. Trop. E. Afr., Dioscoreaceae: 14, 1975) comments on this species. Two herbarium sheets are known. One is a badly prepared fruiting specimen collected by Braun (Nr. 1563 Herb. Amani, now in EA) in 1907 in Tanzania, Tanga Distr., Muheza (5°10’Sx38°48’E), later named by Burkill as D. minutiflora Engl. The other specimen (holotype; B) has some fruits in a packet; it is not annotated by Burkill. Milne-Redhead excludes this name from the synonymy of D. minutiflora; the plant is “probably a cultivar…and best treated as an insufficiently known taxon”. – Perhaps a form of D. praehensilis.
More info on :
see under Jstor_African Plant Initiative
see under The International Plant Name Index
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Record n°11273
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