Stems slender, 1-2(-3) dm; lf-segments broadly ovate to subrotund, 1-3 cm, 3-toothed distally, rounded to subcordate below; fls without nectar; sep white to pale pink-purple, 10-15 mm; 2n=14, 42. Dry or moist woods; N.H. to Minn. and Kan., s. to Fla., Miss., and Ark. Apr., May. (Thalictrum t.)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.