Base de données des plantes d'Afrique

Dioscorea sylvatica Eckl.
Protologue : S. African Quart. J. 1: 363 (1830); Britten, J. Bot. 46: 200 (1908)
Informations sur le genre : Dioscorea
Statut pour SA : accepté, NF (présent)
Statut pour TA : accepté, NF (présent)
Synonyme(s) homotypique(s)
 Dioscorea sylvatica Eckl. var. sylvatica
 Testudinaria sylvatica (Eckl.) Kunth (1850)
Synonyme(s) hétérotypique(s)
=Dioscorea junodii Burtt Davy (1924)
=Dioscorea hederifolia Griseb.
=Dioscorea montana (Eckl. & Zeyh.) Spreng.
=Dioscorea montana var. duemmeri R. Knuth
=Dioscorea montana var. sagittata Suess.
=Tamus sylvestris Kunth
=Testudinaria glaucescens Hügel
=Testudinaria rehmannii (Baker) G.D. Rowley
=Testudinaria sylvestris Kunth
=Dioscorea montana Eckl. & Zeyh. ex R. Knuth non Burch. & Spreng.
=Dioscorea montana var. glauca R. Knuth
=Dioscorea montana var. lobata Weim.
=*Testudinaria montana Eckl. & Zeyh.
Taxons infra-spécifiques
Dioscorea sylvatica var. brevipes (Burtt Davy) Burkill
Dioscorea sylvatica var. multiflora (Marloth) Burkill
Dioscorea sylvatica var. paniculata (Dummer) Burkill
Dioscorea sylvatica var. rehmannii (Baker) Burkill
Dioscorea sylvatica Eckl. var. sylvatica
Ecologie et distribution
Afr. Trop.
Biologie : Vine, left-twining, unarmed, glabrous, to > 4 m long, stems (1 to many) annual from a perennial solitary subterranean tuber to 30 cm Ø, entire to deeply lobed, irregularly ovoid; surface of tuber corky, rough, cracked, sometimes reticulate; stems without bulbils; leaves alternate, entire to 3-lobed, heart-shaped to deltoid; apex triangular, 1-2 mm long; inflorescences racemose; male simple, flowers solitary on pedicels or sometimes in cymose pairs; female to 10 cm long; tepals 1,9-3,2 mm long, spreading; capsule 1,6-2,8x1-2 cm; seeds winged at apex, occasionally with a very narrow basal wing.
Ecologie : Often in rocky places, kopjes, in Brachystegia or mopane woodland; sandy soils; termite mounds; disturbed habitats; 0-1800 m alt. – Tolerant of heavy metal-rich soils in Zimbabwe (Great Dyke).
  Very near D. elephantipes (L’Hér.) Engl. in S. Africa, belonging to a distinctive group of Dioscorea described as a genus, Testudinaria; they have subterranean to exposed perennial tubers with thick corky surface and seeds with apical wings.
  Variable species with many varieties described.
  • J. Bot. 46: 200 (1908). 
    Plus d'info sur :
    voir d'autres informations sous Jstor_African Plant Initiative
    voir d'autres informations sous The International Plant Name Index
    voir d'autres informations sous Missouri Botanical Garden
    Plus d'informations >> ( travail en cours )
    Enregistrement n°174994 modifié le 2009-02-03
    Retour d'information concernant cette fiche