奥巴黄耆 ao ba huang qi

Plants 20-25 cm tall, caespitose. Stems several, below mid­dle only with few leaves, glabrous. Leaves 3-4 cm, sub­sessile; stipules greenish membranous, 6-9 mm, adnate to peti­ole for 1-2 mm, otherwise free, glabrous; rachis glabrous or very sparsely covered with white and black ± appressed hairs 0.1-0.2 mm; leaflets in 5-7 pairs, narrowly elliptic to elliptic, 5-12 × 2-4 mm, abaxially sparsely covered with appressed white hairs up to 0.3 mm, sometimes only at margins and midvein, adaxially glabrous, apex obtuse to subacute. Racemes 1.5-2 cm, rather densely 6-10-flowered; peduncle 4.5-8 cm, sparsely covered with appressed to slightly ascending white and black hairs up to 0.3 mm; bracts whitish membranous, linear, ca. 5 mm, sparsely white and black hairy, apex acute. Calyx 6-7.5 mm, loosely to rather densely covered with subappressed to partly spreading, flexuous, tangled, predominantly black hairs 0.2-0.3 mm; teeth unequal, 2-3 mm. Petals pale blue, drying pale yellow; standard widely ovate, ca. 12 × 7 mm, deeply bi­lobed; wings ca. 11 mm, limbs narrowly obovate, shortly but distinctly incised; keel ca. 8 mm. Ovary subsessile, narrowly ellipsoid, very sparsely white hairy. Legumes unknown.

● Xinjiang (Kunlun Shan).