阿拉套棘豆 a la tao ji dou

Herbs, 10-18 cm tall, acaulescent, from a multiheaded cau­dex, sericeous with white long trichomes. Stipules with a broadly triangular free part, scarious, adnate to petiole. Leaves 5-12 cm, 13- or 15-foliolate; petiole and rachis with appressed trichomes; leaflet blades ovate to oblong-lanceolate, 8-10 × 3-4 mm, both surfaces appressed sericeous with long trichomes. Racemes many flowered; peduncle longer than leaves, erect, with white and black trichomes; bracts lanceolate, 1-1.2 cm, sericeous with long trichomes. Calyx tubular-campanulate, 1-1.5 cm, with spreading black and white cottonlike trichomes; lobes lanceolate, ca. 1/2 as long to as long as tube. Corolla pur­ple; standard ca. 1.5 cm, lamina ovate, apex emarginate; wings 1.2-1.3 cm, apex retuse to rounded; keel as long as wings, beak 2-2.5 mm. Legume ovoid, 2.5-3 × 1-1.2 cm, inflated, thinly leathery, 2-locular, with spreading white and black trichomes, septum wide, adaxial suture grooved, beak 1-1.2 mm. Fl. Jun-Jul, fr. Jul-Aug.

● Alpine meadows among shrubs; ca. 1400 m. Xinjiang.