萨氏棘豆 sa shi ji dou

Herbs, acaulescent, from a prostrate or diffuse multi­headed caudex with many 1-3 cm branches. Stipules with a tri­angular distinct part, membranous, glabrous, adnate to petiole, basally connate, margin ciliate. Leaves (1.5-)3-5 cm, (11 or)13- or 15-foliolate; leaflet blades ovate-lanceolate to lanceo­late, 3-6 × 1.5-2.5 mm, abaxially with appressed sparse short trichomes, adaxially subglabrous, margin reflexed, apex acute. Racemes 2-4-flowered; peduncle 1.5-5 cm, mostly longer than leaves, thin, with appressed short trichomes; bracts lanceolate, ca. 2 mm, with appressed sparse trichomes. Calyx tubular-cam­panulate, 4(-4.8) mm, with appressed black and sparse white trichomes; lobes subulate, 1(-2.3) mm. Corolla purple; standard (6.5-)8-10 mm, lamina orbicular-ovate, apex emarginate; wings (6-)7-8 mm; keel (5.7-)6-7 mm, beak (0.4-)0.8 mm. Legume oblong-ovoid, ca. 13 × 5 mm, with appressed black short tri­chomes, beak falcate. Fl. and fr. Jul-Aug.

● Gravelly alpine slopes, on frozen lands. Xinjiang.