短梗棘豆 duan geng ji dou

Herbs, 1-2 cm tall, acaulescent, from a few-headed cau­dex. Stipules herbaceous, adnate to petiole, distinct, margin cili­ate. Leaves 1-2 cm, 11-19-foliolate; petiole and rachis with appressed white trichomes; leaflet blades oblong, 3-4 × 1.5-2 mm, abaxially with dense trichomes, adaxially glabrous medi­ally, margin appressed white villous. Racemes compact, 2-5-flowered; peduncle less than 1 cm, shorter than leaves, densely villous. Calyx campanulate, ca. 5 mm, with dense black and white long trichomes; lobes subulate, longer than tube. Corolla ?purple; standard ca. 7 mm, lamina suborbicular, apex emar­ginate; wings slightly shorter than standard, apex rounded; keel slightly shorter than wings, beak ca. 0.3 mm. Legume with a stipe as long as calyx tube; body oblong, 5-6 × ca. 2 mm, erect, with appressed dense black and white trichomes. Fl. and fr. Jul-Aug.

● Meadows in alpine areas, along rivers; 5200-5400 m. Xizang.