Eryngium aquaticum
Eryngium aquaticum
Eryngium aquaticum L.
Engl.: rattlesnake master, water eryngo, button snakeroot.
Bot. syn.: Eryngium virginianum Lam.
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.