Astragalus yunningensis H.T.Tsai & T.F.Yu

Plants 2-20 cm tall, caespitose. Stems numerous, 2-16 cm, very sparsely covered with appressed white hairs 0.1-0.4 mm or nearly glabrous. Leaves 1-5.5 cm; stipules 2.5-4 mm, con­nate behind stem to middle, subglabrous or sparsely white ap­pressed hairy; petiole very short or up to 2 cm, with rachis very sparsely to loosely hairy like stem; leaflets in 6-9 pairs, nar­rowly elliptic, 1-5 × 0.3-1(-2) mm, abaxially loosely to rather densely covered with appressed white hairs, adaxially glabrous or sparsely to rather loosely hairy, apex subacute to retuse or emarginate. Racemes 5-11-flowered; peduncle 1.5-3.5 cm, slender, appressed white hairy; bracts 0.5-1.5 mm. Ca­lyx 2-3 mm, loosely covered with appressed white and predominantly black or only black hairs 0.1-0.3 mm; teeth up to 1 mm. Petals white, keel with violet tip; standard rhombic-suborbicular, 6-7 × 4-4.5 mm, apex emarginate; wings ca. 5.5 mm, limbs nar­rowed toward apex, subacute; keel ca. 5 mm. Legumes with a stipe ca. 1 mm, narrowly obliquely ellipsoid, slightly curved, 5-6 mm, 1.8-2 mm high and wide, incompletely 2-locular; valves rather densely covered with appressed white or white and black hairs 0.1-0.3 mm.