狐尾黄耆 hu wei huang qi

Astragalus maximus Willdenow.

Plants 50-90 cm tall. Stem up to 10 mm thick, with as­cending hairs. Leaves 20-30 cm; stipules 10-18 mm, hairy; petiole 1-3 cm, like rachis rather densely covered with as­cending hairs; leaflets in 17-27 pairs, ovate to elliptic, mostly 20-30 × 10-15 mm, abaxially sparsely hairy, adaxially gla­brous, apex obtuse. Racemes subsessile or with a peduncle up to 1 cm, ovoid to cylindric, 5-9.5 cm; bracts 10-20 mm, hairy. Calyx 12-19 mm, slightly inflated, spreading hairy; teeth 5-7 mm. Petals yellow, glabrous; standard elliptic, ca. 20 × 5-7 mm, rounded at apex; wings 18-20 mm; keel ca. 18 mm. Leg­umes ovoid, ca. 7 mm, ca. 4 mm high, densely hairy.

NW Xinjiang [Kazakhstan, Russia (Siberia); SW Asia (Caucasus, Turkey), Europe].