220. Astragalus orbiculatus Ledebour, Fl. Altaic. 3: 311. 1831.
圆形黄耆 yuan xing huang qi
Plants 20-60 cm tall, white hairy. Stems solitary or several, densely covered with spreading short hairs, with longer hairs up to 2.5 mm. Leaves 7-10 cm, sessile or with very short petiole; stipules green, 6-15 mm, very shortly adnate to petiole, densely spreading hairy; rachis loosely to densely covered with long spreading hairs; leaflets in 9-14 pairs, elliptic, 6-15 × 4-9 mm, abaxially densely and adaxially sparsely to densely covered with subappressed hairs, more rarely both surfaces sparsely hairy or adaxially glabrous, apex rounded or more rarely slightly emarginate. Racemes 2-3 cm, loosely 3-7-flowered; peduncles several, along nearly entire length of stem, 2-4 cm, spreading hairy; bracts 8-12 mm, hairy. Calyx 9-14 mm, with long spreading hairs; teeth 4-7 mm. Petals yellowish white, standard and wings hairy; standard narrowly oblong-pandurate, 14-19 × 3-5 mm, in or below middle slightly constricted, apex emarginate; wings 13-16 mm; keel 8-11 mm. Legumes with a stipe 1-3 mm, 14-17 mm, 5-7 mm high and 5-6 mm wide, with a very short beak, 2-locular; valves thin, hairy.
Fallow lands, wastelands, pastures; 400-2900 m. Xinjiang [Afghanistan, Kazakhstan, Kyrgyzstan, Pakistan, Tajikistan, Turkmenistan, Uzbekistan].