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Useful Tropical Plants

Dioscorea sansibarensis

Pax

Dioscoreaceae

+ Synonyms

Dioscorea macabiha Jum. & H.Perrier

Dioscorea maciba Jum. & H.Perrier

Dioscorea macroura Harms

Dioscorea toxicaria Bojer

Dioscorea welwitschii Rendle

Common Name: Yoruba

Dioscorea sansibarensis
Plant climbing into the surrounding vegetation
Photograph by: Steel Wool
Creative Commons License
Dioscorea sansibarensis Dioscorea sansibarensis

General Information

Yoruba is a vigorous perennial climbing plant producing annual stems up to 6 metres long from a massive, perennial tuber[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
]. These stems scramble over the ground, or twine into the surrounding vegetation[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
]. The stems are non-spiny; square in cross-section; twine left-handed; and produce bulbils along the stem[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
]
Although the tuber is primarily considered a famine-food, it is spasmodically grown in many parts of Africa[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
]. There is evidence of its wider cultivation in olden times[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
]. The wild, poisonous plant is often grown on the edge of yam-fields in the hope that if thieves come along they will steal the toxic roots instead of the valuable yams within the field[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
].

Known Hazards

All parts of the plant, especially the wild form, are poisonous[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
]. The tuber has been used as an ordeal-poison, whilst both the tuber, and the bulbil, are used for poisoning wild animals such as pigs that can cause damage to crops[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
]. They are also used as a fish-poison[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
].
The tuber contains dioscorine, dihydrodioscorine and other unnamed alkaloids[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
].

Botanical References


Range

Tropical Africa - Cote D'Ivoire to Kenya, south to Angola, Mozambique and Madagascar.

Habitat

Not known

Properties

Edibility Rating *
Medicinal Rating *
HabitPerennial Climber
Height6.00 m
Cultivation StatusCultivated, Wild

Cultivation Details



Some selection to reduce toxicity has been practised, to the extent at least that in some races toxicity is confined to the upper part of the tuber[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
].
The leaves contain glands filled with a fluid holding nitrifying bacteria[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
].
Bulbils are produced at the leaf-axils, dark purplish brown and usually larger than those of D. bulbifera[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
]. The bulbils are adapted for water dispersal - at first they sink in water, then float and on being left by receding water will germinate[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
]. They are toxic and inedible[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
].

Edible Uses

Tuber - cooked[
398
Title
Edible Wild Plants of Tanzania
Publication
 
Author
Ruffo, C.K.: Birnie, A. & Tengnas, B.
Publisher
Regional Land Management Unit; Nairobi.
Year
2002
ISBN
9966-896-60-0
Description
A very well presented, simple guide to growing and utilizing wild food plants in Tanzania, with line drawings of each plant, a description, habitat and range, non-food as well as food uses, plus basic information on growing the plants.
]. Usually considered to be a famine food, and only eaten when all else has failed[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
]. The tuber is sometimes of great weight - as much as 30 kg has been recorded[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
]. The raw tuber is poisonous, but can be eaten if the poison is removed, usually by cutting up, boiling and washing[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
].

Medicinal

The leaf-sap and a root-decoction are taken by draught for treating epilepsy[
332
Title
The Useful Plants of West Tropical Africa.
Publication
 
Author
Burkil. H. M.
Publisher
Royal Botanic Gardens; Kew.
Year
1985 - 2004
ISBN
 
Description
Brief descriptions and details of the uses of over 4,000 plants. A superb, if terse, resource, it is also available electronically on the Web - see http://www.aluka.org/
].

Other Uses

None known

Propagation

Seed -

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