Herbs perennial. Rhizomes branched. Stems 5--6 cm, densely appressed puberulent, branched. Basal leaf 1; petiole 0.7--1.5 cm, appressed puberulent; blade 3-sect, deltoid, 2.2--2.8 × 3--3.6 cm, papery, abaxially appressed puberulent, base broadly cuneate or subtruncate, central segment lanceolate-linear; lateral segments narrowly oblong, undivided or unequally 2-partite. Stem leaves similar to basal ones but smaller, subsessile or sessile. Flowers solitary, terminal, ca. 1 cm in diam. Receptacle puberulent. Sepals 5, ovate, ca. 4 mm, abaxially densely appressed puberulent. Petals 5, obovate, ca. 5 × 3--3.5 mm, apex rounded. Stamens numerous; anthers narrowly oblong. Aggregate fruit ovoid, 5--6 × 3.5--5 mm; carpels numerous. Achene obliquely obovoid, 1.6--1.8 × 1--1.2 mm, glabrous; style persistent, ca. 0.6 mm. Fl. and fr. Aug.
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