Dioscorea pentaphylla

Dioscorea pentaphylla is a species of flowering plant in the yam family known by the common name fiveleaf yam. It is native to southern and eastern Asia (China, India, Indochina, Indonesia, Philippines, etc.) as well as New Guinea and northern Australia. It is widely cultivated as a food crop and naturalized in Cuba and on several island chains in the Pacific (including Hawaii).[1][2][3][4][5][6][7][8][9][10]

fiveleaf yam
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Dioscoreales
Family: Dioscoreaceae
Genus: Dioscorea
Species:
D. pentaphylla
Binomial name
Dioscorea pentaphylla
Synonyms[1]
  • Botryosicyos pentaphyllus (L.) Hochst.
  • Dioscorea triphylla L.
  • Dioscorea digitata Mill.
  • Dioscorea spinosa Burm.
  • Ubium quadrifarium J.F.Gmel.
  • Ubium scandens J.St.-Hil.
  • Dioscorea kleiniana Kunth
  • Hamatris triphylla (L.) Salisb.
  • Dioscorea jacquemontii Hook.f.
  • Dioscorea globifera R.Knuth
  • Dioscorea codonopsidifolia Kamik.
  • Dioscorea changjiangensis F.W.Xing & Z.X.Li
Mountain yam, hawaii, cooked, steamed, without salt
Nutritional value per 100 g (3.5 oz)
Energy343 kJ (82 kcal)
20 g
0.08 g
1.73 g
VitaminsQuantity %DV†
Thiamine (B1)
7%
0.086 mg
Riboflavin (B2)
1%
0.014 mg
Niacin (B3)
1%
0.13 mg
Pantothenic acid (B5)
10%
0.48 mg
Vitamin B6
16%
0.209 mg
Folate (B9)
3%
12 μg
MineralsQuantity %DV†
Iron
3%
0.43 mg
Magnesium
3%
10 mg
Manganese
13%
0.283 mg
Phosphorus
6%
40 mg
Potassium
11%
495 mg
Sodium
1%
12 mg
Zinc
3%
0.32 mg
Link to USDA Database entry
†Percentages are roughly approximated using US recommendations for adults.
Source: USDA FoodData Central

Dioscorea pentaphylla is a prickly vine that twines counterclockwise around objects and other plants. It may reach 10 meters in length. The alternately arranged leaves are compound, divided into 3 to 5 leaflets each up to 10 centimeters long. The plant produces horseshoe-shaped bulbils about a centimeter long. New plants can sprout from the bulbils. Flowers are borne in spikes. The vine grows from a tuber. Specimens may weigh 3 pounds and may be located over a meter underground.[2]

The tubers of the vine can be cooked and eaten.[11]

References
  1. Kew World Checklist of Selected Plant Families
  2. Gucker, Corey L. 2009. Dioscorea spp. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.
  3. Flora of China, Vol. 24 Page 289, 五叶薯蓣 wu ye shu yu, Dioscorea pentaphylla Linnaeus, Sp. Pl. 2: 1032. 1753.
  4. Smith, A.C. (1979). Flora Vitiensis Nova. A new flora for Fiji (Spermatophytes only) 1: 1-495. Pacific Tropical Botanical Garden, Lawai.
  5. Morat, P. & Veillon, J.-M. (1985). Contributions à la conaissance de la végétation et de la flore de Wallis et Futuna. Bulletin du Muséum National d'Histoire Naturelle. Section B, Adansonia 7: 259-329.
  6. Tanaka, N., Koyama, T. & Murata, J. (2005). The flowering plants of Mt. Popa, central Myanmar - Results of Myanmar-Japanese joint expeditions, 2000-2004. Makinoa 5: 1-102.
  7. Samanta, A.K. (2006). The genus Dioscorea L. in Darjeeling and Sikkim Himalayas - a census. Journal of Economic and Taxonomic Botany 30: 555-563.
  8. Govaerts, R., Wilkin, P. & Saunders, R.M.K. (2007). World Checklist of Dioscoreales. Yams and their allies: 1-65. The Board of Trustees of the Royal Botanic Gardens, Kew.
  9. Wilkin, P. & Thapyai, C. (2009). Flora of Thailand 10(1): 1-140. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.
  10. Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies. Smithsonian Contributions to Botany 98: 1-1192.
  11. Dioscorea pentaphylla. Archived 2016-03-04 at the Wayback Machine University of Michigan Ethnobotany.
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