Plants perennial. Rhizome ca. 1.5 cm, ca. 5 mm in diam. Stems 4--20 cm tall, 1.2--2 mm in diam., glabrous or apically sparsely pubescent, branched. Basal leaves and lower stem leaves scalelike, ovate to lanceolate, 0.7--1.8 cm. Leaves apically on stem ca. 4, sessile to subsessile; leaf blade broadly rhombic, 4--8 × 4--8 cm, glabrous, 2 or 3 × pinnately divided; ultimate segments linear to linear-lanceolate, 1--1.5 cm wide, apex acute. Flowers 2.5--4 cm in diam. Sepals ca. 5, gray-purple, broadly ovate, rhombic-ovate, or broadly rhombic, 7.5--10 × 6--9 mm, margin entire, shortly ciliate, and apically with 1 or 2 small teeth, apex obtuse, rounded, or sometimes acute. Petals ca. 13, yellow, oblong-oblanceolate, 1.2--3 × 0.3--0.7 cm. Stamens to 4.5 mm; anthers oblong, ca. 1.2 mm. Pistils subglabrous. Styles ca. 0.8 mm. Fl. Mar--Apr.
Home