窄膜棘豆 zhai mo ji dou

Oxytropis limprichtii Ulbrich; O. moellendorffii var. sylin­chanensis (Franchet) G. Z. Qian; O. schensiensis Komarov; O. sylinchanensis Franchet.

Herbs, 6-10 cm tall, acaulescent, arising from a shortly branched multiheaded caudex, green. Stipules lanceolate, mem­branous, with long trichomes, adnate to petiole, basally connate. Leaves 5-10 cm, 13-21-foliolate; leaflet blades lanceolate to narrowly lanceolate, 5-11 × 1-3 mm, sparsely pubescent but glabrescent, base rounded, margin incurved, apex acute to acu­minate. Racemes compact, (2 or)3-5-flowered; peduncle 3-8 cm, subequal to or slightly longer than leaves, erect, with spreading white trichomes apically intermixed with black tri­chomes; bracts lanceolate, ca. 8 mm, with long trichomes, base rounded, apex acuminate. Calyx tubular, 0.9-1.2 cm, with spreading white long trichomes and appressed black trichomes; lobes subulate, ca. 4 mm. Corolla purple; standard 1.7-2.6 cm, lamina broadly ovate, apex emarginate; wings ca. 1.5 cm, lami­na oblong, apex 2-lobed; keel ca. 1.3 cm, beak ca. 1 mm. Leg­ume sessile, oblong, ca. 2 × 0.6 cm, membranous, with dense black stout and white long trichomes. Fl. Jun-Jul, fr. Jul-Aug.

● Roadsides on hillsides, gravelly hilltops; 2400-3400 m. Hebei, Shanxi.