多茎野豌豆 duo jing ye wan dou

Ervum megalotropis (Ledebour) Trautvetter var. multi­caulis (Ledebour) Trautvetter; Vicia megalotropis Ledebour var. multicaulis (Ledebour) Krylov; V. nervata Siplivinsky.

Herbs perennial, 10-60 cm tall. Stem much branched, pu­berulent or glabrescent. Leaves paripinnate; stipules semihas­tate, 3-6 mm; leaflets 4-8-paired, linear to oblong, 10-20 × ca. 3 mm, abaxially pilose, apex mucronate; lateral veins very ob­vious; tendril unbranched or branched. Raceme longer than leaf, 14- or 15-flowered; bracts absent. Calyx campanulate, unequally toothed. Corolla purple or blue-purple, 13-17 mm; standard oblong-obovate, constricted at middle, longer than wings and keel. Ovary linear. Legume flat, 30-35 mm, apex beaked. Seeds dark brown, oblate-spheroid. Fl. and fr. Jun-Sep. 2n = 12, 24.

Scrub, mountain summits, dry and hilly slopes, grasslands, clay cliffs, gravels, sandy land; below 4300 m. Beijing, Gansu, Heilongjiang, Jilin, Nei Mongol, Qinghai, Shaanxi, Tianjin, Xinjiang, Xizang [Japan, E Kazakhstan, Mongolia, Russia (European part, Siberia)].