Long-lived polycarpic perennial
Europe to the Caucasus; Naturalized in U.K. and N. America
According to the Doctrine of Signatures, the flower resembling a fetus or serpent indicated its application for both childbirth and snakebites.
Source of plant
Rhizomatous, widely creeping herbaceous perennial; stems unbranched, erect, reaching 1 m in height. Leaves broadly cordate, membranous, obtuse at the apex, basally deeply cordate. Flowers dull yellow-green, held in congested axillary fascicles on young stems in summer.
USDA Hardiness Zone