Dioscorea oppositifolia

L.

Chinese yam, Cinnamon yam

DioscoreaceaeRootsPotential hazards — see below
foodmedicinalornamental
Caution — Parts of this plant may be toxic or require specific preparation. Verify with multiple sources before consuming.
Dioscorea oppositifolia
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(c) Aniruddha Singhamahapatra, some rights reserved (CC BY-NC), uploaded by Aniruddha Singhamahapatra
Dioscorea oppositifolia
iNaturalist · cc-by-nc-nd
(c) Dinesh Valke, some rights reserved (CC BY-NC-ND)
Dioscorea oppositifolia
iNaturalist · cc-by-sa
(c) Dinesh Valke, some rights reserved (CC BY-SA)

What to Eat

Edible parts: Tubers, Root, Bulbils

The tubers are cut and washed with salt and fresh water to remove the alkaloid dioscorine, then cooked and eaten. They can be boiled, mashed, fried, or added to soups. Bulbils are also edible. Starch is extracted from the roots.

Known Hazards

Raw tubers contain the alkaloid dioscorine, which must be removed through washing with salt and fresh water before cooking and consumption.

Where to Find It

A tropical plant. It grows on the Deccan in India. It grows in open forest or along the edge of the forest. It is a cold hardy species. It grows on hillsides and steep valleys between 500-1,500 m altitude. In Sichuan.

Asia, Bangladesh, Brazil, Canada, China, Cuba, Himalayas, India, Japan, Korea, Nepal, North America, Northeastern India, Sikkim, South America, Sri Lanka, USA, West Indies,

Countries: United Arab Emirates, Afghanistan, Antigua & Barbuda, Armenia, Argentina, Azerbaijan, Barbados, Bangladesh, Bahrain, Brunei, Bolivia, Brazil, Bahamas, Bhutan, Belize, Canada, Chile, China, Colombia, Costa Rica, Cuba, Dominica, Dominican Republic, Ecuador, Grenada, Georgia, French Guiana, Guatemala, Guyana, Honduras, Haiti, Indonesia, Israel, India, Iraq, Iran, Jamaica, Jordan, Japan, Kyrgyzstan, Cambodia, St Kitts & Nevis, North Korea, South Korea, Kuwait, Kazakhstan, Laos, Lebanon, St Lucia, Sri Lanka, Myanmar, Mongolia, Maldives, Mexico, Malaysia, Nicaragua, Nepal, Oman, Panama, Peru, Philippines, Pakistan, Puerto Rico, Paraguay, Qatar, Saudi Arabia, Singapore, Suriname, El Salvador, Syria, Thailand, Tajikistan, Timor-Leste, Turkmenistan, Turkey, Trinidad & Tobago, Taiwan, United States, Uruguay, Uzbekistan, St Vincent, Venezuela, Vietnam, Yemen

How to Identify

A yam. It is a large climber that keeps growing from year to year. The tuber is cylinder shaped and 50-90 cm long. The stem twines clockwise. It produces bulbils in the axils of leaves. The leaves are opposite and have 3-5 leaflets like fingers on a hand. They are 5-20 cm long by 3-8 cm wide.

Wikipedia

Source ↗

Dioscorea oppositifolia is a type of yam (Dioscorea) native to Myanmar (Burma) and to the Indian subcontinent (India, Sri Lanka, Bangladesh).

Production

In Sikkim tubers are available December to March.

Other Information

It is available dried in Chinese stores in Australia. It is cultivated.

Notes

There are about 650 species of Dioscorea. Dioscorea opposita is an illegitimate, superfluous name (ICBN Art. 52) for D. oppositifolia L.; non D. opposita auct. (= D. batatas Decne.)

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