索伦野豌豆 suo lun ye wan dou

Herbs perennial, 25-50 cm tall. Stem slender, hairy when young. Leaves paripinnate; stipules linear-lanceolate; leaflets 2-5-paired, linear, 25-30 × 2-3 mm, apex mucronate; lateral veins not obvious; tendril unbranched. Raceme longer than leaf, 2- or 3(or 4)-flowered; rachis 7-8 cm. Calyx campanulate. Corolla blue-purple or purple, 16-26 mm; standard obovate-oblong, longer than wings and keel, apex retuse. Ovary long stalked; ovules many. Legume not seen. Fl. Jun-Jul. 2n = 14.

Grasslands on riverbanks. Heilongjiang, Jilin, Liaoning, Nei Mon­gol [Mongolia, Russia (E Siberia)].