Canada Anemone

''Anemonastrum canadense'', synonym ''Anemone canadensis'', the Canada anemone, round-headed anemone, round-leaf thimbleweed, meadow anemone, windflower, or crowfoot, is a herbaceous perennial native to moist meadows, thickets, streambanks, and lakeshores in North America, spreading rapidly by underground rhizomes, valued for its white flowers.