Herbs perennial, stoloniferous. Roots fibrous. Stolons curved and zigzagged, with adventitious roots at nodes. Radical leaves 4–7 cm including petiole; stipules brown, membranous, abaxially sparsely villous; petiole sparsely spreading villous; leaf blade 3-foliolate, rarely also with 1 or 2 minute segments on petiole; leaflets shortly petiolulate or subsessile, adaxially green, rhombic-ovate, rhombic-obovate, or broadly elliptic, 1–3.5 × 1–2 cm, adaxially sparsely spreading villous, margin many serrate with teeth ovate and dissected into linear lobes, sometimes acutely doubly serrate, apex acute, rarely obtuse; stolon leaves resembling radical ones; stipules pale brown, lanceolate, thinly membranous, margin entire; cauline leaves: stipules ovate, herbaceous, abaxially sparsely villous, margin entire, very rarely serrate at apex; leaf blade 1-or 2-foliolate; leaflets reduced, obovate-elliptic, apex 3-or 4-serrate. Inflorescence terminal, laxly corymbose, 6–8-flowered. Flower 1.5–2 cm in diam. Sepals ovate-lanceolate, apex acuminate; epicalyx segments lanceolate, nearly equaling sepals, apex acuminate. Petals yellow, obovate-oblong, ca. 1/2 as long as sepals, apex emarginate. Style subterminal, thin at base; stigma dilated, capitate. Achenes not seen. Fl. May.
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