灌县黄耆 guan xian huang qi

Astragalus simpsonii E. Peter.

Plants 30-40 cm tall, with predominantly black hairs 0.2-0.7 mm. Stems 2-3 mm thick, sparsely appressed hairy. Leaves 6-10 cm; stipules 5-8 mm, lowest high connate around sup­pressed petiole into a single limb, upper ones narrowly trian­gular, free, black and white ciliate; petiole 1.5-2.7 cm, like rachis appressed hairy; leaflets in 4-6 pairs, ovate, 8-22 × 3-12 mm, abaxially pale green and loosely appressed white hairy, adaxially dark green and glabrous, apex rounded to slightly emarginate. Racemes 2-6 cm, 8-18-flowered; peduncle 5-8.5 cm, striate-sulcate, loosely appressed black hairy; bracts whitish, 3-5 mm, black hairy. Bracteoles sometimes present, minute, whitish, up to 1 mm. Calyx tubular-campanulate, ca. 9 mm, loosely appressed hairy; teeth nearly equal, triangular, 0.5-1 mm. Petals yellow; standard obovate, 16-19 × 7-8 mm; wings 15-18 mm; keel 14-15 mm. Ovary shortly stipitate, densely black hairy. Legumes unknown.

● About 3000 m. NC Sichuan (Guanxian).