Dioscorea sylvatica Eckl. |
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Family : DIOSCOREACEAE |
Protologue : S. African Quart. J. 1: 363 (1830); Britten, J. Bot. 46: 200 (1908) |
Information on the genus : Dioscorea |
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Status
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Status for SA : | accepted (present) |
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Status for TA : | accepted (present) |
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Synonym(s) Homotypic |
Dioscorea sylvatica Eckl. var. sylvatica |
Testudinaria sylvatica (Eckl.) Kunth (1850) |
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Synonym(s) Heterotypic |
=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. |
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Taxon infra-specific |
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 |
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Ecology and distribution |
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Biology : |
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. |
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Ecology : |
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). |
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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. |
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Variable species with many varieties described. |
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J. Bot. 46: 200 (1908).
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More info on : |
see under Jstor_African Plant Initiative |
see under The International Plant Name Index |
see under Tropicos.org. Missouri Botanical Garden |
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Map |
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More information >> ( work in progress )
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Record n°174994 modified 2009-02-03 |
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