Chavica:
Chavica hainana:
Chavica hainana C. DC., Piperaceae: See Piper sarmentosum Roxb.
Chavica roxburghii:
Chavica roxburghii Miq., Piperaceae: See Piper longum L.
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.