po·ten·til·la (pōt'n-tĭl'ə) n. Any of numerous herbs or shrubs of the genus Potentilla, of the North Temperate Zone, having pinnately or palmately compound leaves and yellow, white, or red flowers with many pistils.
[Medieval Latin, garden valerian, from Latin potēns, potent-, present participle of posse, to be able; see potent.]