Herbs perennial. Roots fibrous, subequally thick. Stems 6--30 cm, glabrous below, appressed puberulent above, simple or 1-branched. Basal leaves 2--5; petiole 1.5--8 cm, glabrous; blade undivided or 3-lobed, reniform-pentagonal or oblate, 1--2.2 × 1.4--3.5 cm, thinly papery, glabrous, base subcordate or truncate-rounded, margin with 3 or 4 rounded teeth on each side, ciliate. Stem leaves 2 or 3, lower ones short petiolate, palmatipartite, upper 1 sessile, subpalmatisect, segments narrowly oblong. Flower solitary, terminal, 1.7--2.8 cm in diam. Receptacle glabrous. Sepals 5, ovate, 6--8 mm, abaxially yellowish puberulent. Petals 5 or 6, broadly obovate or flabellate-obovate, 10--13 × 9--17 mm, apex truncate or truncate-rounded. Stamens numerous; anthers oblong. Aggregate fruit ovoid, ca. 6 mm. Achene slightly bilaterally compressed, obliquely obovoid, ca. 2.5 × 1.8 mm, glabrous; style persistent, ca. 0.5 mm. Fl. Jun--Sep.
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