African Plant Database


Dioscorea asteriscus Burkill
Family : DIOSCOREACEAE
Protologue : Bull. Jard. Bot. État 15: 356 (1939)
Information on the genus : Dioscorea
 
 
Status
Status for SA : accepted (present)
Status for TA : accepted (present)
 
Synonym(s) Heterotypic
=*Dioscorea sativa auct. sensu Rendle, non L., nec Thunb.
 
Ecology and distribution
Trop. Afr.
Biology : Tuber annual, solitary, round, glabrous, c. 10 cm Ø; stem left-twining, unarmed, terete, usually with ovoid, dark purple or red bulbils 0,4-1 cm Ø in axils; leaves alternate; blade entire, apex acuminate, to 3 cm long, never thickened; a pair of membranous semicircular projections clasping the stem present at petiole base; male inflorescence compound; flowers pedicellate, yellow, patent to inflorescence axis, star-like; female flowers similar, ovary restricted just below perianth; capsule winged at base, often ± triangular, 1,7-3x1,1-1,5 cm; seed winged at basal end.
Ecology : Rain-forest; dry evergreen forest; forest edges; scrub; coastal evergreen bushland in forested ravines; among rocks; sandy and lateric soils; termite mounds; disturbed habitats; 0-2700 m alt.
  Confused with the wild variety of the very close D. bulbifera. The main difference lies in the male flowers (see characters underlined above). The two taxa seem to be sympatric.
  The bulbils are apparently not eaten (cf. D. bulbifera).
South. Afr.
Biol./Eco : perennial-Geophyte, Climber- Ht 2 m. Alt: 1000 - 1500 m. Distribution: BOT, NAM

Bibliography for Southern Africa :
  • List South. African Succ. Pl. : 67 (1997).
 
More info on :
see under Jstor_African Plant Initiative
see under The International Plant Name Index
see under Flora of Mozambique
see under Flora of Zimbabwe
 
Map
carte afrique num 11199
 
Record n°11199
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