Oxalis acetosella (
wood sorrel or
common wood sorrel) is a rhizomatous flowering plant in the family
Oxalidaceae, common in most of Europe and parts of Asia. The specific name is
acetosella, refers to its sour taste. The common name
wood sorrel is often used for other plants in the genus
Oxalis. In much of its range it is the only member of its genus and hence simply known as "the"
wood sorrel. While common wood sorrel...
(Wikipedia)