Lomatogonium
Lomatogonium rotatum
Lomatogonium rotatum (L.) Fries ex Fern.
Engl.: marsh felwort.
Bot. syn.: Pleurogyne rotata (L.) Griseb.
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.