羽衣草 yu yi cao

Herbs perennial, 10–30 cm tall. Rhizome thick, fleshy, woody. Stems solitary or tufted, decumbent to erect, densely white villous. Radical leaves: stipules brown, membranous, abaxially villous; petiole 3–15 cm, densely spreading villous; leaf blade cordate-orbicular, 2–3 × 3–7 cm, both surfaces sparsely pilose, more densely so on veins, base deeply cordate, sinus narrow, sometimes with 2 lobes meeting, margin 7–9-lobed and serrulate; cauline leaves shortly petiolate or subsessile; stipules connate at base, abaxially villous, margin serrate; leaf blade small. Inflorescences densely corymbose-cymose. Flowers 3–4 mm in diam.; pedicel 2–3 mm, glabrous or subglabrous. Hypanthium abaxially densely or sparsely villous. Sepals yellow-green, triangular-ovate, 1–1.5 mm, slightly larger than epicalyx segments, abaxially sparsely pilose; epicalyx segments oblong-lanceolate. Stamens nearly 1/2 as long as sepals. Style filiform, slightly longer than stamens. Achene included in membranous receptacle, ovoid, ca. 1.5 mm, glabrous, apex subacute.

Alpine grasslands; 2500--3500 m. Gansu, Nei Mongol, Qinghai, Shaanxi, Sichuan Xinjiang [Japan].