21. Hedysarum algidum L. Z. Shue in W. T. Wang et al., Vasc. Pl. Hengduan Mts. 1: 974. 1993.
块茎岩黄耆 kuai jing yan huang qi
Herbs, perennial, 5-20 cm tall. Rhizome inflated torose. Stems several, ascending. Stipules lanceolate, 6-10 mm, connate farther than middle. Leaves 4-8 cm, 5-13-foliolate; leaflet blades obovate, elliptic, or suborbicular, 8-10 × 4-7 mm, abaxially appressed pubescent, adaxially glabrous. Racemes lax, with 6-12 flowers; bracts obovate, slightly longer than pedicel, apex obtuse and usually dentate; peduncle conspicuously longer than leaves. Pedicel 3-4 mm. Calyx campanulate, 5-6 mm, pilose; teeth triangular-lanceolate, ± as long to 1.5 × as long as tube, most abaxial tooth slightly longer than others. Corolla purple; standard obovate, 1.3-2.4 cm; wings ± as long as standard; keel slightly longer than standard. Ovary pubescent. Legume divided into 2-4 articles; articles ovoid to ellipsoid, 5-6 × 4-5 mm, compressed, pubescent, margin narrow and denticulate. Fl. Jul-Aug, fr. Aug-Sep.
● Alpine meadows, alpine gravelly areas; 3000-4500 m. SW Gansu, Qinghai, Sichuan, E Xizang, Yunnan.