绢毛山莓草 juan mao shan mei cao

Sibbaldianthe sericea Grubov, Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk SSSR 17: 16. 1955; Potentilla adpressa (Bunge) Cardot var. sericea Cardot.

Herbs perennial. Roots robust, terete, woody. Flowering stems tufted, 1–4 cm tall, appressed sericeous. Radical leaves 1–4 cm including petiole; stipules brown, membranous, sericeous; petiole appressed sericeous; leaf blade pinnately 5-foliolate or 3-foliolate; leaflets opposite, obovate-lanceolate or narrowly lanceolate, 0.5–1.5 cm × 2–3 mm, both surfaces appressed sericeous, base long cuneate, margin entire, apex acuminate; cauline leaves 3, resembling radical ones but smaller; stipules green, sericeous. Flowers 1 or 2, 4- or 5-merous, 3–5 mm in diam. Sepals ovate-triangular, abaxially sericeous; epicalyx segments lanceolate, abaxially sericeous, apex acute. Petals white, obovate, equaling or slightly longer than sepals. Style lateral. Achenes not seen.

Mountain slopes, desert grasslands; 600--1200 m. Nei Mongol [Mongolia].