Polygonum hydropiperoides
Polygonum hydropiperoides
Polygonum hydropiperoides Michx.
Engl.: false water-pepper, mild water-pepper.
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.