Rumex hydrolapathum Hudson. Engl.: great water dock, giant water dock.
Classic texts: Pereira 1854.
Classic texts: John Hill 1812.
Classic texts: Salmon 1710.
Classic texts: Hool 1922.
Classic texts: USDisp 1918.
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.