Astragalus. It is the root of Astragalus memeranaceus (Fisch.) Bge. Var. mongolicus (Bge.) Hsiao or A. membranaceus (Fisch.) Bge.
Perennial herb, 50-150cm tall. The roots are straight and long, cylindrical, slightly woody, and the surface is light brown to dark brown. Stems erect, branched above, villous. Odd-pinnate compound leaves, alternate; petiole base with lanceolate stipules; leaflets 25-37, leaflets broadly elliptic, 4-9mm long, slightly obtuse apex, mucronate, base cuneate, entire, with both sides White villous. Racemes axillary, with 10-25 flowers; pedicels short, black hirsute; bracts linear-lanceolate; calyx tubular; corolla yellow, butterfly-shaped; stamens 10, disomy; ovary stalked, Smooth and glabrous, style glabrous. Capsule membranous, swollen, ovate-oblong, 1.1-1.5cm wide, glabrous, with beak at apex, with prominent reticulation. Seeds 5-6, kidney-shaped, black. The flowering period is June-July, and the fruiting period is August-September.