Dioscorea pentaphylla
L.
Dioscoreaceae
Botryosicyos pentaphyllus (L.) Hochst.
Dioscorea changjiangensis F.W.Xing & Z.X.Li
Dioscorea codonopsidifolia Kamik.
Dioscorea digitata Mill.
Dioscorea globifera R.Knuth
Dioscorea jacquemontii Hook.f.
Dioscorea kleiniana Kunth
Dioscorea spinosa Burm.
Dioscorea triphylla L.
Hamatris triphylla (L.) Salisb.
Ubium quadrifarium J.F.Gmel.
Ubium scandens J.St.-Hil.
Common Name: Buck Yam
General Information
Buck yam is a perennial climbing plant producing annual stems from a perennial rootstock. These stems scramble over the ground, or twine into the surrounding vegetation[
].
The plant is widely cultivated in tropical areas of Asia for its edible root[
300- Title
- Vegetables in the Tropics
- Publication
-
- Author
- Tindall. H. D.
- Publisher
- MacMillan, Oxford.
- Year
- 1983
- ISBN
- 0-333-24268-8
- Description
- An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
]. It is also harvested from the wild because its slender tubers render its cultivation more difficult[
].
Known Hazards
Edible species of Dioscorea have opposite leaves whilst poisonous species have alternate leaves[
174- Title
- Atlas of Medicinal Plants.
- Publication
-
- Author
- Kariyone. T.
- Publisher
- Nihon Rinshosha; Osaka
- Year
- 1973
- ISBN
-
- Description
- A good Japanese herbal.
].
Botanical References
266- Title
- Flora of China
- Publication
-
- Author
-
- Website
- http://flora.huh.harvard.edu/china/
- Publisher
- Missouri Botanical Garden Press; St. Louis.
- Year
- 1994
- ISBN
-
- Description
- An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
Range
Southeastern Asia - Indian subcontinent, China, through southeast Asia to Australia and Pacific Isl.
Habitat
Scrub forests, forest margins; at elevations of 500 - 1,500 metres in southern China[
266- Title
- Flora of China
- Publication
-
- Author
-
- Website
- http://flora.huh.harvard.edu/china/
- Publisher
- Missouri Botanical Garden Press; St. Louis.
- Year
- 1994
- ISBN
-
- Description
- An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
].
Properties
| Edibility Rating |  |
| Medicinal Rating |  |
| Habit | Perennial Climber |
| Height | 0.00 m |
| Cultivation Status | Cultivated, Wild |
Cultivation Details
Plants grow best in lowland tropical areas with a temperature around 26 - 34°c; a well-defined dry season of 2 - 5 months; and a total rainfall of 1,300 - 1,700mm evenly distributed throughout the remainder of the year[
300- Title
- Vegetables in the Tropics
- Publication
-
- Author
- Tindall. H. D.
- Publisher
- MacMillan, Oxford.
- Year
- 1983
- ISBN
- 0-333-24268-8
- Description
- An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
].
For best yields, this species requires a deep, well-drained, sandy loam that is not liable to water-logging[
300- Title
- Vegetables in the Tropics
- Publication
-
- Author
- Tindall. H. D.
- Publisher
- MacMillan, Oxford.
- Year
- 1983
- ISBN
- 0-333-24268-8
- Description
- An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
].
Daylengths of more than 12 hours are preferred during the early growing season since this encourages vegetative growth; daylengths of less than 12 hours towards the end of the growing season will encourage tuber formation and development[
300- Title
- Vegetables in the Tropics
- Publication
-
- Author
- Tindall. H. D.
- Publisher
- MacMillan, Oxford.
- Year
- 1983
- ISBN
- 0-333-24268-8
- Description
- An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
].
There are some named varieties[
300- Title
- Vegetables in the Tropics
- Publication
-
- Author
- Tindall. H. D.
- Publisher
- MacMillan, Oxford.
- Year
- 1983
- ISBN
- 0-333-24268-8
- Description
- An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
].
An extremely widespread and variable species, with at least 16 varieties being recognised[
266- Title
- Flora of China
- Publication
-
- Author
-
- Website
- http://flora.huh.harvard.edu/china/
- Publisher
- Missouri Botanical Garden Press; St. Louis.
- Year
- 1994
- ISBN
-
- Description
- An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
].
A dioecious species, both male and female plants need to be grown if seed is required.
Edible Uses
Root - cooked[
300- Title
- Vegetables in the Tropics
- Publication
-
- Author
- Tindall. H. D.
- Publisher
- MacMillan, Oxford.
- Year
- 1983
- ISBN
- 0-333-24268-8
- Description
- An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
,
301- Title
- Cornucopia II
- Publication
-
- Author
- Facciola. S.
- Publisher
- Kampong Publications, California.
- Year
- 1998
- ISBN
- 0-9628087-2-5
- Description
- The second edition of an excellent guide to the edible uses of plants, though it does not give any details of cultivation etc.
]. The tubers weigh up to 2kg each[
300- Title
- Vegetables in the Tropics
- Publication
-
- Author
- Tindall. H. D.
- Publisher
- MacMillan, Oxford.
- Year
- 1983
- ISBN
- 0-333-24268-8
- Description
- An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
]. The tubers, which creep along just beneath the soil surface, are sometimes very long (up to 1.3 metres) and thin[
].
Male inflorescences and young leaves are sometimes eaten[
301- Title
- Cornucopia II
- Publication
-
- Author
- Facciola. S.
- Publisher
- Kampong Publications, California.
- Year
- 1998
- ISBN
- 0-9628087-2-5
- Description
- The second edition of an excellent guide to the edible uses of plants, though it does not give any details of cultivation etc.
].
Medicinal
The juice of the plant is applied to boils[
272- Title
- Plants and People of Nepal
- Publication
-
- Author
- Manandhar. N. P.
- Publisher
- Timber Press. Oregon.
- Year
- 2002
- ISBN
- 0-88192-527-6
- Description
- Excellent book, covering over 1,500 species of useful plants from Nepal together with information on the geography and peoples of Nepal. Good descriptions of the plants with terse notes on their uses.
].
A decoction of the plant is applied to swellings[
].
Other Uses
None known
Propagation
Seed - not normally used to propagate this species.
Cuttings of tubers. Small tubers can be cut into 2 - 4 sections, larger ones into 6 - 8 sections. Each section should have 2 - 3 dormant buds. The cut tuber is often left in the sun for several hours to promote wound healing and reduce the risk of fungal infection[
300- Title
- Vegetables in the Tropics
- Publication
-
- Author
- Tindall. H. D.
- Publisher
- MacMillan, Oxford.
- Year
- 1983
- ISBN
- 0-333-24268-8
- Description
- An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
].
If you have any useful information about this plant, please leave a comment. Comments have to be approved before they are shown here.
Useful Tropical Plants Database 2014 by
Ken Fern,
web interface by
Ajna Fern
with help from
Richard Morris.
