This might be thimbleweed. I find buttercups to be difficult. The flower is not open yet.
ditch along site hh7
Anemone canadensis (Canada anemone, round-headed anemone, meadow anemone, 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.
