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32. Caragana boisii C. K. Schneider, Ill. Handb. Laubholzk. 2: 96. 1907.
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.
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