Perennial, root stout or slender, stock often multicipital, giving rise to 1 or several simple or branched stems, decumbent at base then erect, (10)-20-30-(50) cm. tall, rather stout, striate. Basal Ivs us. ∞, densely rosulate, (1·5)-2.5-7·5 × 1-2 cm., oblong- to ovate- to lanceolate-spathulate, coriac. to submembr., acute or obtuse; petioles up to c. 5 mm. long. Cauline Ivs 1-5 pairs, sessile, oblong to narrow-oblong; lower ± 15 × 10 mm., ovate-oblong, obtuse. Infl. of few- to c. 10-fld umbelliform or corymbose cymes. Calyx c. 10 mm. long, divided 1/2-3/4 way into linear-oblong to narrow-ovate subacute to obtuse lobes. Corolla white, 20-25 mm. diam., deeply cut into oblong to broad-oblong to obovate rounded lobes with purplish central vein.