钝叶黄耆 dun ye huang qi

Astragalus nobilis Bunge & B. Fedtschenko var. obtusi­foliolus S. B. Ho, Bull. Bot. Res., Harbin 3(4): 58. 1983.

Plants 7-8 cm tall, acaulescent, vegetative parts covered with ± medifixed, appressed, white hairs. Leaves 2-6 cm; stip­ules ca. 5 mm, adnate to petiole for 2-3.5 mm, densely covered with hairs up to 1 mm, at margins also with basifixed hairs; petiole 1-3 cm, like rachis densely covered with hairs 0.5-1 mm; leaflets in 2-4 pairs, 4-9 × 2-5 mm, both surfaces densely hairy like rachis, apex rounded to very shortly acuminate. Ra­cemes shortly ovoid, densely many flowered; peduncle 4-5 cm, densely to rather densely white hairy like rachis, in upper part with a few black hairs mixed in; bracts 4-5 mm, with white and black hairs, at margins with basifixed hairs. Calyx soon inflated ovoid, 9-11 mm, 7-9 mm in diam., loosely covered with ± spreading, basifixed to subbasifixed, white hairs 1-1.5 mm and with fewer and slightly shorter, ± medifixed, subappressed, black hairs, whole surface finely rugulose-warty; teeth 1-2 mm. Petals purple-red (according to diagnosis); standard ovate, ca. 20 × 7 mm, somewhat abruptly constricted in lower 1/3, apex emarginate; wings ca. 18 mm, limbs narrowly oblong, obliquely emarginate; keel 13-15 mm. Legumes subsessile, oblong, 6-7 mm, 3-3.5 mm high and ca. 2 mm wide, with a slender, hooked beak ca. 2 mm with persistent style, 2-locular; valves densely covered with subappressed to partly ascending, subbasifixed, white hairs 0.5-0.8 mm.

● Xinjiang.