Cauline lvs, including the petiole, mostly 3-6(-11) cm, the blade usually 10-15(-30) mm wide, tending to be diamond-shaped or ovate or lance-ovate, acute at the base and clearly distinguished from the petiole; 2n=16-38, mostly 24 in our range and 16 in the s. Appalachians. A rare yellow form occurs in Md. Cool woods, sometimes with no. 2 [Claytonia virginica L.] and rarely hybridizing with it; N.S. to Minn., and s. along the mts. to N.C., Tenn., and n. Ga. Early spring, disappearing by early summer.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.