Dioscorea polystachya, Shan Yao PRO
Dioscorea polystachya, Shan Yao 山药 Chinese YamShan Yao (TCM) D. alataDescourtilz, Flore médicale des Antilles, 1829 Dioscorea polystachya(Photo by James H. Miller) (Wikimedia) Botanical name: Dioscorea spp. D. polystachya is the standard species. D. opposita Also used are D. persimilis, D. alata, D. fordii, D. batatas Parts used: Rhizome Temperature & Taste: Neutral, slightly moist….