Herbs perennial. Roots fibrous, subequally thick. Stems (10--)15--25 cm, sparsely sericeous, branched. Basal and lower stem leaves long petiolate; petiole 2--4.5 cm, sparsely sericeous; blade 3-partite near base, reniform-pentagonal or suborbicular, 1--1.7 × 1.7--2.6 cm, papery, sparsely sericeous, base cordate, central segment rhombic-cuneate, 3-lobed or 3-partite, lobes oblong or linear; lateral segments obliquely flabellate, unequally 2-partite, upper lobe smaller, 3-lobed, lower lobe unequally 3-partite, lobules linear. Upper stem leaves sessile, palmatisect, segments linear. Flowers solitary, terminal, 1.4--1.9 cm in diam. Receptacle densely puberulent. Sepals 5, broadly ovate, ca. 5 mm, abaxially pubescent. Petals 5, broadly obovate, 6--10 × 7--10 mm, nectary pit without a scale, apex rounded-truncate. Stamens numerous; anthers oblong. Aggregate fruit cylindric, 8--10 × 5--6 mm. Achene slightly bilaterally compressed, obovoid, 1.5--2 × 1.2--1.7 mm, puberulent or glabrous; style persistent, 0.4--0.7 mm. Fl. Jun--Aug, fr. Jun--Sep.
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Varieties 2 (1 in the flora): North America; Asia.
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