Rhizome prostrate. Radical leaves 7–10 cm including petiole; stipules brown, abaxially subglabrous, margin cilliate; petiole glabrous or apically pilose; leaf blade 3-foliolate; petiolules short, sparsely pilose; leaflet blade abaxially purplish, adaxially green, rhombic-ovate to obovate, 1–4 × 1–3.5 cm, both surfaces sparsely pilose or glabrescent, base cuneate or broadly so, margin crenate, distally 3–5-lobed, apex obtuse to acute; cauline leaf solitary or reduced. Flowering stems 7–20 cm tall, glabrous; cyme 1–3-flowered; bracts ovate-lanceolate, membranous, margin entire. Flowers 1–2.5 cm in diam.; pedicel glabrous, rarely slightly pubescent. Sepals triangular-ovate, glabrous or abaxially sparsely pilose, apex acuminate or 2-or 3-serrate; epicalyx segments lanceolate, much shorter than sepals. Petals yellow, elliptic to rhombic-elliptic, nearly 2 × as long as sepals. Achenes black-brown, cylindric to obliquely obovoid, 2–3 mm, white villous. Fl. and fr. May–Jun.
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