In Japanese, it is known as . is another kind of
Dioscorea japonica, which is native to fields and mountains in Japan. In Chinese,
Dioscorea japonica is known as
yě shānyào () which translates to English as "wild
Chinese yam" or simply "wild yam". Another name is
Rìběn shǔyù (; literally "Japanese yam"). In Korean, it is known as
cham ma (), as well as
dang ma (). == Chemistry ==