Curanga
Curanga amara
Curanga amara Juss.
Engl.: curanja, koen-tao-tjao.
Bot. syn.: Gratiola amara Roxb.
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.