Thalictrum thalictroides (L.) Eames & B. Boivin
Anemonella thalictroides (L.) Spach
Syndesmon thalictroides (L.) Hoffmanns. ex Britton
Rue anemone is native to woodlands in eastern North America. It is a relative of the buttercup family. Thalictrum means “divided leaves;” so does thalictroides(!)
Identification: Plants are 4-12" (10-30 cm) tall. Leaves are rounded in shape, split into three lobes near the tips, about 1-1½" (2.5-3.8 cm) around. White to pinkish flowers with yellow stamens appear in groups of 1-6, supported by thin red-brown stems. Each flower has 5-10 petals, and is ¼-1¼" (8.5-31 mm) around. Fruits appear in late spring and are ¹/₁₆-⅛" (3-4.5 mm) long.
Thalictrum thalictroides at Illinois Wildflowers
Thalictrum thalictroides at the Lady Bird Johnson Wildflower Center
Thalictrum thalictroides on Discover Life
Thalictrum thalictroides at the University of Wisconsin's Robert W. Freckmann Herbarium
Thalictrum thalictroides at the Vanderbilt University Bioimages web site
Thalictrum thalictroides on Plants for a Future, a resource and information centre for edible and otherwise useful plants
Thalictrum thalictroides on eFloras
Thalictrum thalictroides description by Thomas H. Kent, last updated 16 Aug 2013.