伊朗棘豆 yi lang ji dou

Oxytropis carduchorum Hedge.

Herbs, 3-5 cm tall, acaulescent, from a multiheaded cau­dex, matlike or cushionlike, with appressed white trichomes. Stipules triangular-ovate, 3-4 mm, herbaceous, glabrous, sub­glabrous, or with sparse trichomes, adnate to petiole, basally connate, margin ciliate. Leaves 0.5-3 cm, (7-)11-23-foliolate; leaflet blades oblong to elliptic, 1.5-5 × 0.3-2 mm, both sur­faces with appressed white trichomes, apex retuse to acute. Ra­cemes capitate, (1 or)2-8-flowered; peduncle 0.8-3.5 cm, mostly longer than leaves, with appressed black and white trichomes; bracts linear to narrowly lanceolate, 1-1.5 mm, with sparse trichomes. Calyx broadly cylindric, 3-5 mm, with appressed white and black trichomes; lobes subulate, 0.8-1.8 mm. Corolla purple; standard 6-10 mm, lamina suborbicular, apex emarginate; wings 5.5-6.3 mm, oblong, slightly shorter than standard, apex emarginate; keel 5.2-6 mm, beak 0.5-1 mm. Legume shortly stipitate; body broadly cylindric, 7-8 × 2-3 mm, slightly inflated, with appressed trichomes, beak ca. 1 mm. Fl. Jul-Aug, fr. Aug-Sep. 2n = 16.

Rocky N slopes, in Carex moorcroftii grasslands, gravelly areas; 3500-5100 m. Qinghai, Xizang [Kashmir, Kazakhstan, Kyrgyzstan, Pakistan, Tajikistan, Turkmenistan, Uzbekistan; SW Asia].