59. Potentilla argentea Linnaeus, Sp. Pl. 1: 479. 1753.
银背委陵菜 yin bei wei ling cai
Herbs perennial. Roots robust, terete. Flowering stems erect or ascending, 15–40 cm tall, together with petioles white tomentose and sparsely villous. Radical leaves 2–10 cm including petiole; stipules brown, membranous, abaxially white pilose and pubescent; leaf blade palmately 5-foliolate; leaflets adaxially green, oblong-obovate, 1–3 × 0.5–1 cm, abaxially densely white tomentose, adaxially appressed pilose, base cuneate, margin revolute, proximally entire, distally irregularly 2–5-serrate on each side; cauline leaves many, resembling radical ones but petioles becoming shorter higher up stem, uppermost leaves sessile; stipules green, ovate-lanceolate, herbaceous, abaxially densely white tomentose, apex acuminate, entire or 2- or 3-dentate. Inflorescence corymbose-cymose or paniculate-cymose, laxly many flowered. Flowers ca. 1 cm in diam.; pedicel 1.5–2.5 cm, tomentose. Sepals triangular-ovate, apex acute to acuminate; epicalyx segments oblong-lanceolate, shorter than sepals, abaxially canescent tomentose and villous, apex acute. Petals yellow, obovate, slightly longer than sepals, apex emarginate. Style subterminal, base thickened and papillate; stigma dilated. Achenes smooth or slightly rugose. Fl. and fr. May–Aug.
Sunny mountain slopes, gravel fields; ca. 1100 m. Xinjiang [Mongolia, Russia (Siberia); C Asia, Europe].