Thalictrum aquilegifolium (Meadow Rue)

Clump-forming perennial with delicate green foliage reminiscent of columbine or maidenhair fern.  Plants grow to a height of 2'-3' with a similar spread and prefer full sun to part shade in moist, humusy soil.  Delicate flowers appear on branching stems above the foliage in mid- to late spring.