'purple avens' definitions:

North American perennial with hairy basal pinnate leaves and purple flowers and plume-tipped fruits [syn: prairie smoke, purple avens, Geum triflorum]

Erect perennial of north temperate zone having pinnate leaves and a few nodding flowers with a brown-purple calyx and orange and pink petals [syn: water avens, Indian chocolate, purple avens, chocolate root, Geum rivale]