Herbs perennial. Roots fibrous, thickened above. Stems 5--40 cm, glabrous or sparsely puberulent, simple or branched. Basal leaves 1--3; petiole 2--9 cm, glabrous or sparsely puberulent; blade 3-lobed or 3-partite, reniform or pentagonal, 4--14 × 6--22 mm, papery or herbaceous, glabrous or sparsely puberulent or pubescent, base cordate, central lobe broadly obovate or rhombic-obovate, entire, 3-dentate, or 3-lobed, lateral lobes obliquely flabellate, unequally 2-lobed. Lower stem leaves similar to basal ones; upper stem leaves short petiolate or sessile, 3-sect, segments narrowly elliptic or oblong. Flowers solitary, terminal, 0.6--1.3 cm in diam. Pedicel 0.4--7 cm, subglabrous or puberulent. Receptacle puberulent. Sepals 5, ovate, 2.2--4 mm, abaxially appressed puberulent. Petals 5, obovate or elliptic-obovate, 4--6.5 × 1.8--4 mm, nectary pit without a scale, apex rounded or subtruncate. Stamens numerous; anthers oblong. Aggregate fruit ovoid, ca. 5 × 3 mm; carpels numerous. Achene obliquely broadly obovoid, 1--1.1 × 0.9--1 mm, puberulent or glabrous; style persistent, 0.6--1 mm. Fl. Jul--Sep.
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