Roxburghia:
Roxburghia stemona:
Roxburghia stemona Steud., Stemonaceae: See Stemona tuberosa Lour.
Roxburghia viridiflora:
Roxburghia viridiflora Sm., Stemonaceae: See Stemona tuberosa Lour.
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.