凹叶黄耆 ao ye huang qi

Plants 10-30 cm tall, sparsely hairy. Stems several, 5-25 cm, slender, with short lateral branches, sparsely to loosely covered with partly subbasifixed, appressed, mostly white hairs 0.05-0.3 mm. Leaves 3-6 cm; stipules 2-4 mm, behind stem distinctly connate, very sparsely hairy and ciliate; petiole 0.5-1.5 cm, with rachis hairy like stem; leaflets in 6-9 pairs, elliptic, 4-8 × 2-5 mm, abaxially loosely covered with appressed white hairs 0.3-0.5 mm, adaxially glabrous or sparsely hairy, apex rounded to emarginate. Racemes rather densely 4-12-flowered; peduncle 2.5-4 cm, hairy; bracts whitish membranous, 2-3 mm, black hairy. Calyx 4-4.5 mm, loosely covered with appressed black hairs 0.2-0.3 mm and white hairs 0.4-0.6 mm; teeth 2-3 mm. Petals bluish violet but yellowish with violet-tipped keel when dry; standard widely elliptic to ovate, 10-11 × 6-7 mm, apex deeply incised; wings 8-9 mm; keel 9-11 mm, limbs 6.5-7 × 3-3.8 mm. Legumes with a stipe 3-5 mm, narrowly oblong, slightly curved, 12-18 mm, ca. 3 mm high and wide, keeled ventrally, deeply grooved dorsally, shortly acuminate, incom­pletely 2-locular; valves loosely to rather densely covered with very short, appressed to ascending, black and white or only black hairs.

● Xizang, Yunnan.