37. Potentilla plumosa T. T. Yu & C. L. Li, Acta Phytotax. Sin. 18: 10. 1980.
羽毛委陵菜 yu mao wei ling cai
Herbs perennial. Roots robust, terete, woody. Flowering stems spreading or ascending, 4–30 cm tall, spreading white sericeous-villous. Radical leaves 2–7 cm including petiole; stipules brown, membranous, abaxially white villous, rarely glabrescent; petiole white tomentose and white villous; leaf blade pinnate with 6–9 pairs of leaflets; leaflets opposite or alternate, at intervals of 2–4 mm, sessile, elliptic, 3–15 × 2–8 mm, abaxially white tomentose, sometimes glabrescent, densely appressed white villous on veins, adaxially appressed white pubescent, margin slightly revolute, parted to midvein, apex obtuse; segments 3–5 on each side of midvein, fasciated; cauline leaves resembling radical ones but only with 3–5 pairs of leaflets; stipules green, ovate or ovate-lanceolate, herbaceous, abaxially densely appressed villous, margin 2–4-dentate-lobed or serrate, apex acuminate. Inflorescence densely or laxly corymbose-cymose, 3–10-flowered. Flowers 1–1.5 cm in diam. Sepals ovate or triangular-ovate, apex acute or acuminate; epicalyx segments ovate-lanceolate, slightly shorter than sepals, abaxially densely pubescent or villous, apex obtuse or acute. Petals yellow, obovate, ca. 2 × as long as sepals, apex emarginate. Stamens ca. 20. Carpels numerous; ovary subreniform; style subterminal, base inconspicuously thickened; stigma slightly dilated, capitate. Achenes ovoid-ellipsoid, smooth, abaxially swollen. Fl. and fr. Jun–Aug.
Open places in forests, meadows, terraces in valleys, grassy alpine slopes; 2500--4000 m. Gansu, Qinghai, Sichuan, Xizang.