横断山缬草 heng duan shan xie cao

Plants 40-100 cm tall. Rhizomes reduced; roots fascicled, 1-1.5 mm in diam. Stolons sometimes present. Stems solitary, erect, simple, glabrous or sparsely puberulent. Basal leaves caducous; lower 1 or 2 pairs of cauline leaves with petiole 2-9 cm; blade simple, broadly elliptic or obovate, 3-8 × 2-4.5 cm, subentire or serrate; upper leaves petiolate to subsessile; petiole to 7 cm; blade 5-10 × 3-5 cm, glabrous or sparsely villous, lyrate; segments 3-7, crenulate or serrate; terminal segment broadly elliptic to orbicular, much larger than others, 4-8 × 2-5 cm. Inflorescence laxly capitate; bracts linear. Corolla rose or red, funnelform, 3-4.5 mm. Achenes lanceolate, 3-3.5 mm, glabrous.

● Forests, ravines; 3100-3700 m. SW Sichuan (Muli), NW Yunnan (Dêqên, Weixi, Zhongdian).