Rumex obtusifolius, commonly known as bitter dock, broad-leaved dock, bluntleaf dock, dock leaf, dockens or butter dock, is a perennial plant in the family Polygonaceae. It is native to Europe, but is

Sorrel is a perennial herbaceous plant in the family Polygonaceae. It is also called common sorrel, meadow sorrel, green sorrel, sour dock, spinach dock and narrow-leaved dock.