Stems 1-5 dm from a short, stout rhizome, also with offsets, branched above, with a large, open infl; blades of basal lvs elliptic, oblong, or lanceolate, very coarsely and saliently serrate with 4-8 teeth on each side, gradually narrowed below to a broad petiole; bracteal lvs similar but much smaller; fls irregular, the 3 larger pet 3-4 mm, clawed, the ovate blade spotted with yellow and auriculate at base, the 2 smaller pet oblanceolate, unspotted; seeds spinulose in 2 rows. Moist or wet ledges and rocky woods in the mts.; Va. to Ky., s. to Ga. June-Oct. (Hydatica petiolaris; Saxifraga leucanthemifolia Michx., not Lapeyr.)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.