Mountain Yam Facts

Mountain yam scientifically known as Dioscorea pentaphylla is a herbaceous, climbing, twining, perennial monocots plant which is native tosouthern and eastern Asia (China, India, Indochina, Indonesia, Philippines, etc.) as well as New Guinea and northern Australia.

Name Mountain yam
Scientific Name Dioscorea pentaphylla
Native Native to southern and eastern Asia (China, India, Indochina, Indonesia, Philippines, etc.) as well as New Guinea and northern Australia.
Common/English Name Five Leaf Yam, Mountain yam, Wild yam, Prickly yam
Plant Growth Habit Herbaceous, climbing, twining, perennial monocots
Growing Climate Best in lowland tropical areas
Soil Requires a deep, well-drained, sandy loam that is not liable to water-logging
Plant Size 30 feet (10 m) long
Root Perennial rootstock.
Stem 2–5 mm in diam., twining to the left, annual, terete, towards base woody and densely prickly, prickles lax on upper stem.
Leaf Leaves are alternate and compound with 3 to 5 leaflets.
Leaflets Leaflets measure 2 to 4 inches (5-10 cm) long and 0.8 to 1.5 inches (2-4 cm) wide.
Bulbils Horseshoe shaped and about 1 cm in diameter
Flowering Season August-October.
Flower Male flowers occur in spikes up to 12 inches (30 cm) long at the branch ends;

Female flowers occur in spikes, but are shorter, 2 to 10 inches (5-25 cm) long.

Fruit Capsule are black at maturity, long ellipsoid, 2-2.5 cm, thinly leathery, sparsely hairy, wings 0.5–0.6 cm wide
Seed 3–4.5 by 3.5–4 mm, lenticular-ovoid with a small apical projection; wing 7–11 by 3.5–5 mm, extending from seed base, oblong.
Tuber Shape & Size Single, irregular to elongated, egg-shaped tubers
Tuber Color Light Brown
Tuber Weight Tubers weigh up to 2kg each
Major Nutrition Vitamin B6 (Pyridoxine) 0.209 mg (16.08%)
Carbohydrate 20 g (15.38%)
Copper, Cu 0.129 mg (14.33%)
Manganese, Mn 0.283 mg (12.30%)
Potassium, K 495 mg (10.53%)
Vitamin B5 (Pantothenic acid) 0.48 mg (9.60%)
Vitamin B1 (Thiamin) 0.086 mg (7.17%)
Phosphorus, P 40 mg 5.71%
Iron, Fe 0.43 mg (5.38%)
Isoleucine 0.059 g (3.53%)
Health Benefits
  • Help Improve Muscle Mass
  • Iron Deficiency Anemia
  • Helps Maintain Dental Health
  • Improves brain function
  • Healthy Skin and hair
  • Lower Risk of Heart Problems
  • Fights and Damages Diabetes
  • Immunity
  • Helps Treat High Blood Pressure
Calories in 1cup (100gm) 82 Kcal

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