Plants 2-4 dm; blades of basal lvs broadly round- ovate, 5-8 נ3-7 cm, obtuse to broadly rounded above, usually cordate or subcordate below; cauline lf sessile or subsessile near the middle of the stem, like the basal but smaller; pet sessile, 15-22 mm, with 7-9 veins, the outer pair of veins emitting numerous lateral branches; anthers reddish; staminodes white, 10-16 mm, evidently longer than the stamens, 3-parted for 4/5 or 9/10 their length, the segments knobbed at the tip; ovary greenish; 2n=32. Wet, calcareous soil in the mts.; Va. and W.Va. to n. Fla., and w. to Ark., s. Mo., and e. Tex.; reputedly in N.J. Sept., Oct.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.