Herbs perennial. Roots fibrous, subequally thick. Stems 5--8.2 cm, sparsely puberulent, simple or few branched. Basal leaves ca. 8; petiole 1.5--4.5 cm, puberulent; blade reniform or reniform-pentagonal, 5--8 × 8--15 mm, papery, glabrous, base deeply cordate, central lobe obtrapeziform, 3-dentate; lateral lobes subflabellate, unequally 2-lobed. Stem leaves 1--3, 3-sect, segments linear. Flowers solitary, terminal, 1--1.2 cm in diam. Receptacle glabrous. Sepals 5, oblong, 5.2--6 mm, abaxially sparsely puberulent. Petals 5(or 6), obovate-oblong, 5.2--6 × 2--3 mm, nectary pit with a scale, apex rounded or obtuse. Stamens numerous; anthers oblong. Aggregate fruit subglobose or broadly ovoid, 2.5--3.5 × 2--2.2 mm. Achene slightly bilaterally compressed, ellipsoid, 1.2--1.5 mm, sparsely puberulent, with a prominent dorsal rib; style persistent, ca. 0.2 mm. Fl. and fr. Mar.
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