Catabrosa
Catabrosa aquatica
Catabrosa aquatica (L.) Beauv.
Engl.: water whorl-grass.
Bot. syn.: Glyceria aquatica (L.) Presl & Presl.
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.