Herbs perennial. Roots fibrous, subequally thick. Stems erect, 5--20 cm, sparsely pubescent. Basal leaves few; petiole 3.4--9 cm, sparsely pubescent; blade ternate to 2-ternate, broadly ovate to pentagonal in outline, 2.6--4.2 × 3.4--5 cm, thinly leathery, glabrous or abaxially sparsely pubescent, central segment ovate, petiolule 0.5--1 cm, pinnatifid to bipinnatifid, lobes acute; lateral segments ternate to pinnatifid, similar to central lobe. Stem leaves similar to basal ones. Flowers solitary, leaf-opposed or terminal, 2--2.5 cm in diam. Pedicel 3--11.5 cm, pubescent. Receptacle glabrous. Sepals 5, broadly elliptic or ovate, 5--7 × 3--4 mm, glabrous. Petals 5(--8), narrowly obovate, 9--12 × 4--6 mm, nectary pit without a scale, apex rounded. Stamens numerous; anthers oblong. Aggregate fruit globose, ca. 10 mm in diam. Achene obliquely obovoid, 2--4 mm, glabrous; style persistent, ca. 0.5 mm, recurved. Fl. Apr--Jun, fr. May--Jul.
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