Herbs perennial. Roots fibrous, subequally thick. Stems 3--5 cm, glabrous below, puberulent above, simple. Basal leaves 2 or 3; petiole 1.8--2.9 cm, glabrous; blade 3-lobed or 3-dentate, obovate, cuneate, broadly rhombic, or pentagonal, 5--14 × 4--11 mm, leathery, glabrous, base broadly cuneate, cuneate, or subtruncate, lobes ovate. Stem leaves 3, lowermost similar to basal leaves; upper 2 subopposite, short petiolate or sessile, broadly rhombic, 3-partite; central lobe narrowly oblong, lateral lobes linear-lanceolate. Flowers solitary, terminal, 1.7--2.4 cm in diam. Receptacle glabrous. Sepals 5, broadly elliptic, 4--6 mm, abaxially sparsely puberulent. Petals 5, obovate or obcordate, 9--11 × 6.5--8.5 mm, nectary pit without a scale, apex emarginate or subtruncate. Stamens numerous; anthers oblong. Carpels numerous. Achene ca. 2 mm, glabrous; style slightly shorter than ovary. Fl. Sep.
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