Oncorhiza:
Oncorhiza:
Oncorhiza Pers., Dioscoreaceae: See Dioscorea L. .
Oncorhiza esculentus:
Oncorhiza esculentus (Lour.) Pers., Dioscoreaceae: See Dioscorea esculenta (Lour.) Burk.
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.