Dioscorea_deltoidea
Dioscorea deltoidea
Species of yam from Asia
Dioscorea deltoidea, the Nepal yam, is a species of flowering plant in the family Dioscoreaceae. Its native range is the Himalayas through to south-central China and mainland Southeast Asia.[1][2] Its tubers contain diosgenin and are harvested by local peoples as a treatment for a variety of conditions, including gastrointestinal disorders and intestinal worms.[3] Tubers are also eaten after boiling, washing, and baking.[4] It grows in forests and humus-rich soils.[5]