扁刺锦鸡儿 bian ci jin ji er

Caragana boisii var. platycarpa Yakovlev; C. microphylla Lamarck var. crasseaculeata Bois.

Shrubs to 1.3 m tall. Branches brown; current-year branch­lets purplish brown. Stipules spinelike, 0.8-1.5 cm. Leaves pin­nate, 8-20-foliolate; petiole and rachis often caducous; leaflet blades elliptic-oblong to obovate-elliptic, 5-18(-20) × 4-12 mm, sericeous when young but later only sericeous along abax­ial veins, apex obtuse to emarginate. Flowers solitary or some­times to 3 in a fascicle. Pedicel 1.5-2.8 cm, articulate apically. Calyx tube campanulate, 6-11 mm. Corolla yellow, 2-2.5 cm; standard broadly ovate, claw ca. 1/2 as long as limb or shorter; wings with claw ± as long as limb, auricle ca. 1/3 as long as claw; keel with claw ± as long as limb. Ovary pubescent. Leg­ume 2.5-5 cm × 4-6 mm, glabrous. Fl. May, fr. Jul-Aug. 2n = 16*.

● Slopes, valleys, terraces; 2200-3200 m. S Gansu, S Shaanxi, Si­chuan.