Dioscorea asteriscus Burkill

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Dioscorea asteriscus

Photo: Bart Wursten
Swanepoel Concession, Cheringoma

Dioscorea asteriscus

Photo: Bart Wursten
Swanepoel Concession, Cheringoma

Dioscorea asteriscus

Photo: Bart Wursten
Swanepoel Concession, Cheringoma

Dioscorea asteriscus

Photo: Bart Wursten
Swanepoel Concession, Cheringoma

Dioscorea asteriscus

Photo: Bart Wursten
Swanepoel Concession, Cheringoma

Dioscorea asteriscus

Photo: Bart Wursten
Swanepoel Concession, Cheringoma

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Species details: Click on each item to see an explanation of that item (Note: opens a new window)

Synonyms: Dioscorea sativa sensu Rendle
Common names:
Frequency:
Status: Native
Description:
Hairless climber with left-twining, unarmed stems, growing from a short-lived, fleshy, spherical tuber, c. 10 cm in diameter. Bulbils usually present in axils, ovoid, 0.4 - 1 cm in diameter, lacking angles, dark purple or rarely red, yellow inside, tuberculate. Leaves alternate, entire, apex acuminate, up to 3 cm long but never thickened, flanges often present at petiole base as a pair of membranous projections which clasp stem, to c. 5 mm in diameter, usually pale green, sometimes translucent. Male inflorescences usually compound, flowers pedicellate, pointing outwards from the inflorescence axis; tepals recurved exposing the stamens, pale creamy green. Capsule oblong to oblong-elliptic in outline, 1.7 - 3 cm long.
Notes: See D. bulbifera for comparison.
Derivation of specific name:
Habitat: In forest and along forest margins, riverine forest and on termite mounds, on sandy or lateritic soils and sometimes in disturbed areas.
Flowering time:Jan - Apr
Worldwide distribution: Katanga DRC, CAR, Uganda, Kenya, Tanzania,Malawi, Mozambique, Zambia, Zimbabwe, northern Botswana and Caprivi Namibia.
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Content last updated: Friday 29 December 2017
Literature:

Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 90.

Milne-Redhead, E. (1975). Dioscoreaceae Flora of Tropical East Africa Page 9.

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 121.

Timberlake, J.R. & Childes, S.L. (2004). Biodiversity of the Four Corners Area: Technical Reviews Volume Two (Chapter 5-15) Appendix 5-1: Plant Checklist Occasional Publications in Biodiversity 15 Page 184.

White, F., Dowsett-Lemaire, F. & Chapman, J.D. (2001). Evergreen forest flora of Malawi Royal Botanic Gardens, Kew Page 96.

Wilkin, P. (2001). Dioscoreaceae of South-Central Africa Kew Bulletin 56(2) Pages 375 - 376. (Includes a picture).

Wilkin, P. (2009). Dioscoreaceae Flora Zambesiaca 12(2) Pages 116 - 117. (Includes a picture).

Other sources of information about Dioscorea asteriscus:

Our websites:

Flora of Botswana: Dioscorea asteriscus
Flora of Malawi: Dioscorea asteriscus
Flora of Mozambique: Dioscorea asteriscus
Flora of Zambia: Dioscorea asteriscus
Flora of Zimbabwe: Dioscorea asteriscus

External websites:

African Plants: A Photo Guide (Senckenberg): Dioscorea asteriscus
African Plant Database: Dioscorea asteriscus
Biodiversity Explorer (Biodiversity of southern Africa): Dioscorea asteriscus
BHL (Biodiversity Heritage Library): Dioscorea asteriscus
EOL (Encyclopedia of Life): Dioscorea asteriscus
ePIC (electronic Plant Information Center): Dioscorea asteriscus
Flora Zambesiaca web site: Dioscorea asteriscus
GBIF (Global Biodiversity Information Facility): Dioscorea asteriscus
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Dioscorea asteriscus
IPNI (International Plant Names Index): Dioscorea asteriscus
Ispot Southern Africa: Dioscorea asteriscus
JSTOR Plant Science: Dioscorea asteriscus
Kew Herbarium catalogue: Dioscorea asteriscus
Kew Monocotyledon checklist: Dioscorea asteriscus
Mansfeld World Database of Agricultural and Horticultural Crops: Dioscorea asteriscus
The Plant List (version 1.1): Dioscorea asteriscus
Tropicos: Dioscorea asteriscus


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2014-18

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2018). Flora of Caprivi: Species information: Dioscorea asteriscus.
https://www.capriviflora.com/speciesdata/species.php?species_id=115360, retrieved 21 February 2018

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