Latin: Pulsatilla vulgaris, or Anemone pulsatilla
English names: Pasque flower, Meadow Anemone, Praire Crocus, Windflower.
Pasque refers to Easter (Passover) as the flower blooms around that time of year.
As some of the names indicate, it prefers dry grassy places.
In Sweden, it is rather rare. I don’t think I’ve ever seen it anywhere else but in the nature reserve where I took these pictures. There it grows in a sort of stony meadow/pasture land.