The genus Pulsatilla contains about 40 species of herbaceous perennial plants native to meadows and prairies of North America, Europe, and Asia. Derived from the Hebrew word for Passover, "pasakh", the common name pasque flower refers to the Easter (Passover) flowering period, in the spring. Common names include pasque flower, wind flower, prairie crocus, Easter flower, and meadow anemone. Several species are valued ornamentals because of their finely-dissected leaves, solitary bell-shaped flowers, and plumed seed heads. The showy part of the flower consists of sepals, not petals.

Pulsatilla vulgaris, the pasqueflower, is a species of flowering plant belonging to the buttercup family (Ranunculaceae), found locally on calcareous grassland in Europe, and widely cultivated in gardens. It was considered part of the genus Anemone, to which it is closely related. Several sources still list Anemone pulsatilla as the accepted name, with Pulsatilla vulgaris as a synonym.