Plants perennial, glabrous except pistils. Rhizome robust. Stems 3--15 cm tall, usually branched near base, basally and lower stem with sheathlike scales. Stem leaves with petiole to 3.2 cm basally on stem, shortly petiolate or sessile toward stem apex; leaf blade oblong, narrowly oblong-ovate, or rarely triangular, 1--4.8 × 1--2 cm, 2 or 3 × finely pinnately divided; ultimate segments narrowly lanceolate to lanceolate-linear, apex mucronate. Flowers 1--1.8 cm in diam. Sepals 5--7, obovate-elliptic to ovate, 4--6 mm, apex rounded. Petals ca. 8, pale purple to pale blue, narrowly obovate, 5.5--11 mm, apically with few small teeth. Anthers ellipsoid. Styles very short. Achenes obovoid, ca. 2 mm, basally pubescent. Fl. Apr--Jul. 2n = 16*.
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