会宁黄耆 hui ning huang qi

Astragalus huiningensis var. psilocarpus K. T. Fu.

Plants up to 30 cm tall; hairs subappressed to nearly spreading, tangled, white, in inflorescence also a few black, 0.1-0.3 mm. Stems many, 10-15 cm, branched, densely to rather densely hairy. Leaves 1.5-3 cm, subsessile; stipules 1-2 mm, subglabrous or sparsely to loosely hairy; rachis hairy like stem; leaflets in 5-8 pairs, narrowly elliptic to elliptic, 2-4 × 1-2 mm, abaxially loosely to rather densely hairy, adaxially gla­brous or nearly so, apex rounded to emarginate. Racemes 1.5-3.5 cm, loosely 10-15-flowered; peduncle 5-15 cm, densely white hairy, partly glabrescent; bracts whitish membranous, scarcely ca. 1 mm, white and black hairy. Calyx 2-2.5 mm, loosely covered with mostly white hairs; teeth widely triangu­lar, 0.2-0.4 mm. Petals yellow; standard obovate, ca. 5 × 3 mm, apex emarginate; wings ca. 5 mm, limbs deeply obliquely in­cised to bilobed; keel ca. 5 mm. Legumes sessile, ovoid, 4-5 mm, ca. 3 mm high and ca. 2.5 mm wide, slightly keeled ven­trally, deeply and narrowly grooved dorsally, very shortly acu­minate, 2-locular; valves with dark, cross-wrinkled and partly netlike elevated nerves, sparsely covered with very short ap­pressed white hairs or glabrescent.

● Gansu, Ningxia, Qinghai, Shaanxi, Sichuan.