Dioscorea opposita is an obsolete synonym of two species of yams:
- Chinese yam (Dioscorea polystachya), a widely cultivated yam native to China.
- Dioscorea oppositifolia, a yam native to the Indian subcontinent.
- Dioscorea opposita Thunb., Fl. Jap.: 151 (1784). World Checklist of Selected Plant Families. Retrieved 2 February 2016.
- Dioscorea polystachya Turcz. National Plant Germplasm System. Retrieved 2 February 2016.
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