了墩黄耆 liao dun huang qi

Astragalus lioui H. T. Tsai & T. T. Yu.

Plants 10-20 cm tall; hairs appressed to subappressed, dis­tinctly flattened, often curved, white, 0.1-0.3 mm. Stems sev­eral, 6-18 cm, rather densely hairy. Leaves 2-4 cm; stipules ca. 2 mm, free or more rarely very shortly connate behind stem, loosely to rather densely hairy; petiole 1-1.5 cm, like rachis loosely to mostly densely hairy; leaflets in (2 or)3(or 4) pairs, elliptic to obovate, 7-13 × 3-8 mm, abaxially loosely to densely hairy, adaxially glabrous or sparsely hairy, apex rounded to widely retuse or emarginate. Racemes loosely to rather densely 10-20-flowered; peduncle 1.5-4 cm, rather densely hairy; bracts 0.5-1 mm, loosely hairy. Calyx 2.5-3 mm, loosely to rather densely hairy; teeth 0.3-0.8 mm. Petals pale purplish (when dry); standard elliptic, ca. 8 × 3.5 mm, without distinct claw, apex emarginate; wings ca. 7 mm, limbs incised; keel ca. 5.5 mm. Legumes sessile, obliquely erect, narrowly oblong, 8-10 mm, ca. 3 mm high and 2-2.5 mm wide, keeled ventrally, widely grooved dorsally, very shortly acuminate, 2-locular; valves very finely reticulate veined, glabrous. Seeds mostly 2 in each locule.

Gansu, Nei Mongol, Ningxia, Qinghai, Xinjiang [Mongolia].