Stems 40--100 cm tall. Basal leaves 2 or 3; petiole 9--29 cm, base narrowly sheathed; leaf blade not green when dried, pentagonal, 4.5--6.5 × 8.5--12.5 cm, base cordate, 3-sect; central segment rhombic, 3-fid, ultimate lobules triangular-denticulate; lateral segments obliquely flabellate, unequally 2-fid nearly to base. Cauline leaves 3 or 4, similar to basal ones. Pedicel 5.5--15 cm. Flower solitary, or 2 or 3 flowers in a terminal cyme, 3.2--4.8 cm in diam. Sepals 5--8, yellow, not green when dried, elliptic to narrowly elliptic, 1.3--2.8 × 1--1.5 cm, apex rounded. Petals 10--22, linear, longer than stamens but shorter than sepals, 1.3--1.6 cm × ca. 1 mm, narrowed at apex. Stamens to 9 mm. Follicles 20--28, ca. 7 mm; persistent style ca. 1 mm. Fl. Jun--Jul, fr. Jun. 2n = 16.
Can be grown by divisions or seedlings. Seeds needs stratification.
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