Oncus esculentus.
Botanical name:
Oncus esculentus Lour. Dioscoreaceae.
Related entry: Dioscorea
India. Royle says this plant has large, farinaceous and edible tubers.
Sturtevant's Edible Plants of the World, 1919, was edited by U. P. Hedrick.
A herbal distance course
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.