46. Potentilla potaninii Th. Wolf, Biblioth. Bot. 16(Heft 71): 166. 1908.
华西委陵菜 hua xi wei ling cai
Herbs perennial. Roots usually branched. Flowering stems tufted, erect or ascending, 10–30 cm tall, together with petioles white tomentose and pilose. Radical leaves 2–10 cm including petiole; stipules brown, membranous, abaxially pilose; leaf blade pinnate with 2 or 3 pairs of leaflets; leaflets opposite, at intervals of 3–5 mm, sessile or subsessile, adaxially green, obovate or obovate-elliptic, 0.5–2.5 × 0.3–1.5 cm, abaxially white lanate, appressed villous on veins, adaxially appressed pilose, base cuneate, margin obtusely or acutely serrate, or pectinately parted, apex obtuse; teeth oblong or segments fasciated ligulate; cauline leaves: stipules green, lanceolate or ovate-lanceolate, herbaceous, abaxially white tomentose and pilose, margin entire, apex acuminate; leaf blade pinnate with 2 pairs of leaflets, or 3-foliolate. Inflorescence cymose, laxly many flowered. Flowers 1–1.5 cm in diam.; pedicel 1.5–2.5 cm, white tomentose. Sepals ovate-lanceolate or oblong-ovate, apex acuminate; epicalyx segments lanceolate or elliptic-lanceolate, nearly equaling or rarely slightly shorter than sepals, abaxially pilose. Petals yellow, obovate, 0.5–1 × as long as sepals, apex emarginate. Style subterminal, base slightly thickened; stigma dilated. Achenes smooth. Fl. and fr. Jun–Sep.
Forests, forest margins, meadows on mountain slopes; 1700--4700 m. Gansu, Qinghai, Sichuan, Xizang, Yunnan [Bhutan].
