Herbs perennial. Roots fibrous, subequally thick. Stems 4--18 cm, appressed puberulent, branched. Basal leaves ca. 5; petiole 1.5--5 cm, appressed puberulent; blade 3-partite, broadly rhombic, rarely triangular, 1--2.5 × 0.7--2.3 cm, papery, abaxially appressed puberulent, base broadly cuneate, rarely subtruncate, central lobe oblong-oblanceolate or linear, usually undivided, sometimes 1-or 2-lobulate; lateral lobes obliquely lanceolate, undivided or obliquely cuneate, unequally 2(or 3)-lobulate. Stem leaves short petiolate or sessile, 3-sect, segments linear. Flowers solitary, terminal, 0.5--1.2 cm in diam. Receptacle puberulent. Sepals 5, oblong-elliptic or broadly elliptic, 2.5--4.2 mm, abaxially appressed puberulent. Petals 5, elliptic-obovate, 3--5(--6) × 2--3 mm, nectary pit without a scale, apex rounded. Stamens 10--12; anthers oblong. Aggregate fruit oblong-ovoid, 4--7 × 2.5--4 mm. Achene narrowly obovoid or obliquely obovoid, ca. 1 × 0.5--0.7 mm, glabrous; style persistent, ca. 0.4 mm. Fl. Jun--Aug.
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