Herbs perennial, stoloniferous. Stems prostrate, spreading villous or glabrescent, often with adventitious roots at nodes. Radical leaves not present at anthesis; leaves mostly cauline, 4–15 cm including petiole; stipules brown, membranous, abaxially pilose or glabrescent, margin entire, apex acute or acuminate; petiole spreading villous; leaf blade interrupted pinnate with 3–5 pairs of leaflets; terminal leaflet narrowly obovate or oblong-elliptic, 1–4 × 0.5–2 cm, abaxially densely appressed sericeous, lateral veins prominent, parallel, straight, base decurrent in apical pair of leaflets, margin sharply serrate. Flower solitary, 1.5–2 cm in diam.; pedicel 2–7 cm, appressed pilose. Sepals triangular-ovate, apex acute; epicalyx segments elliptic or oblanceolate, abaxially pilose, 3- or 4-veined, margin 3–7-serrate, apex acute. Petals yellow, obovate, apex rounded. Style lateral; stigma dilated. Achenes not seen. Fl. and fr. May–Aug.

Grassy mountain slopes; 1000--2900 m. Sichuan.