Japanese_yam
Dioscorea japonica
Species of yam from Asia
Dioscorea japonica, known as East Asian mountain yam,[1] yamaimo, or Japanese mountain yam, is a type of yam (Dioscorea) native to Japan (including Ryukyu and Bonin Islands), Korea, China, Taiwan, and Assam.[2][3]
Dioscorea japonica is used for food. Jinenjo, also called the wild yam, is a related variety of Japanese yam that is used as an ingredient in soba noodles.