密丛棘豆 mi cong ji dou

Oxytropis stipulosa Komarov.

Herbs, 2-7 cm tall, acaulescent, from a multiheaded cau­dex, cushionlike, with long trichomes. Stipules with a lanceo­late free part, 5-7 mm, herbaceous, with spreading dense white long trichomes when young but glabrescent, basal half adnate to petiole. Leaves 1-3 cm, densely (9 or)11-19-foliolate; peti­ole and rachis with spreading dense or sparse white long tri­chomes; leaflet blades ovate, oblong, or oblong-lanceolate, 1.5-4 × 1-2 mm, densely to sparsely sericeous with white long tri­chomes, base rounded, apex retuse, rounded, or acute. Racemes 2-10-flowered; peduncle (1.5-)2-7 cm, slightly shorter to longer than leaves, with dense or sparse white long trichomes; bracts oblong-lanceolate, 3-4 mm. Calyx campanulate, 4-6 mm, with dense white and black short trichomes; lobes linear, 1-2.1 mm. Corolla purple to bluish purple; standard 5-8 mm, claw very short, lamina suborbicular, apex emarginate; wings as long as or shorter than standard, apex rounded to emarginate; keel 5-6 mm, beak ca. 0.5 mm. Legume shortly stipitate; body oblong-cylindric, 9-12 × 2-3 mm, inflated, 1-locular, with spreading dense white trichomes, septum less than ca. 1 mm wide, adaxial suture deeply grooved, apex acute. Fl. Jun-Jul, fr. Jul-Aug.

Alpine gravelly areas, floodplains, hillsides, grasslands, gravelly terraces, Carex moorcroftii-Stipa grasslands, stony slopes; 3500-5200 m. Gansu, Qinghai, Xinjiang, Xizang [Kashmir, Pakistan].