克氏棘豆 ke shi ji dou

Herbs, 1-4 cm tall, acaulescent, from a multiheaded cau­dex, matlike or cushionlike, appressed white pubescent. Stip­ules lanceolate to subulate, adnate to petiole, basal half connate, margin ciliate. Leaves 2-5 cm, 17-25(-29)-foliolate; petiole and rachis sulcate, with appressed trichomes; leaflet blades linear-lanceolate to narrowly ovate, 2-5 × 0.5-2 mm, both surfaces glabrous or adaxially with sparse trichomes, margin involute and abaxially with appressed trichomes. Racemes lax, to ca. 5-flowered; peduncle 2-5 cm, somewhat to much longer than leaves, slender, with appressed trichomes, apically with appressed black trichomes intermixed with white long tri­chomes; bracts linear to subulate, 2.5-3 mm, with appressed black and white long trichomes. Calyx broadly cylindric, 4-6 mm, with appressed black trichomes; lobes subulate, ca. 1.5 mm, 1/3-1/2 as long as tube. Corolla purple; standard 0.9-1.2 cm, lamina obovate, apex emarginate; wings 8-11 mm, apex broadly emarginate; keel as long as wings, beak ca. 1 mm. Leg­ume stipitate; stipe 2-3 mm; body cylindric-ovoid, ca. 10 × 4 mm, 1-locular, with appressed black and sparse white tri­chomes, apex acuminate. Fl. and fr. Jun-Jul.

Gravelly alpine areas, valleys; 3000-4700 m. Xinjiang [Kazakh­stan, Russia (W Siberia)].