This pretty plant is a Pasque flower, Pulsatilla Vulgaris, related to buttercups and anemones. I like the way it gracefully bows its flower heads. I suppose the Pasque relates to the fact that it flowers around Eastertime.
I'm using it to wish everyone reading this a very happy Easter. If you don't celebrate the festival, then have a very happy Sunday anyway.
Christ is risen! He is risen indeed! Alleluia!