389. Astragalus ellipsoideus Ledebour, Fl. Altaic. 3: 319. 1831.
胀萼黄耆 zhang e huang qi
Astragalus ellipsoideus var. kuldshensis Basilevskaja; A. transiliensis Gontscharow.
Plants 13-27 cm tall, acaulescent to subacaulescent, caespitose, vegetative parts covered with ± medifixed, appressed, white hairs 0.8-1 mm. Leaves 7-20 cm; stipules 5-8 mm, very shortly adnate to petiole, densely hairy; petiole 2-7 cm, like rachis stout, densely hairy; leaflets in 4-8 pairs, 6-25 × 4-13 mm, both surfaces densely hairy. Racemes ovoid, (4-)5-6 cm, 3-3.5 cm in diam., very densely many flowered; peduncle stout, 12-19 cm, covered with appressed white hairs; bracts 2-5 mm, with mostly basifixed, white or black hairs. Calyx at anthesis tubular, ca. 10 mm; teeth 2-2.5 mm; fruiting calyx inflated ovoid, 12-18 mm, rather densely covered with basifixed, tangled, spreading, white hairs 1-2 mm and often, especially at teeth, with black hairs mixed in; teeth (2-)4-6 mm. Petals yellowish; standard obovate, 20-24 × 7-10 mm, apex widely emarginate; wings 19-23 mm, limbs narrowly oblong to obtriangular-spatulate, obliquely emarginate; keel 17-19 mm. Legumes enclosed in calyx, with a stipe ca. 1 mm, 12-15 mm, ca. 4 mm high, 2-locular; valves densely covered with spreading white hairs 1.5-2 mm.
Gansu, Nei Mongol, Ningxia, Qinghai, Xinjiang [Kazakhstan, Mongolia].