Stems more than 40 cm tall, to 100 cm at fruiting, simple. Basal leaves 2--4; petiole 10--28 cm, base narrowly sheathed; leaf blade not green when dried, pentagonal, 5.5--9.2 × 11--16 cm, 3-sect; central segment rhombic, 3-fid, ultimate lobules unequally dentate; lateral segments obliquely flabellate, unequally 2-fid. Cauline leaves 3 or 4, similar to basal ones. Flower solitary, 3.5--4.5 cm in diam. Sepals 5--7, golden yellow, orange-yellow when dried, broadly ovate or obovate, 1.5--2 (--2.5) × 1.2--1.5 cm, apex rounded. Petals 14--22, narrowly linear, longer than sepals, sometimes subequaling sepals, 1.8--2.6 cm × ca. 1 mm. Stamens 1--2 cm. Follicles 20--40, ca. 1.3 cm × 4 mm; persistent style 3.5--4 mm. Seeds black, narrowly obovoid-globose, ca. 1.5 mm. Fl. Jul--Sep, fr. Jul.
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