丝齿黄耆 si chi huang qi

Plants 6-8 cm tall, acaulescent or subacaulescent, caespi­tose, densely covered with ascending to spreading, bifurcate, only white hairs. Stems, if present, up to 2 cm, densely covered with symmetrically or asymmetrically bifurcate, ascending to spreading, flexuous, tangled hairs 0.5-0.8 mm. Leaves 3-6 cm; stipules 3-5 mm, shortly adnate to petiole, hairy like stem; peti­ole 1-2.5 cm, like rachis densely covered with symmetrically or asymmetrically bifurcate, ascending to spreading, tangled hairs 0.5-0.8 mm and with strongly asymmetrically bifurcate, spreading hairs up to 2.5 mm; leaflets in 5-9 pairs, narrowly elliptic to elliptic, 4-9 × 2-3 mm, partly folded, both surfaces densely covered with symmetrically or asymmetrically bifur­cate, ascending to partly spreading, tangled hairs 1.5-2.5 mm. Racemes subsessile, 4- or 5-flowered; bracts 7-8 mm, with mostly strongly asymmetrically bifurcate hairs 0.8-1.5 mm. Calyx 10-12 mm, densely covered with mostly strongly asym­metrically bifurcate, ascending to spreading, tangled hairs 1.5-2.5 mm; teeth filiform, 5-6 mm. Petals probably whitish or yel­low, standard abaxially and wings on outer side loosely covered with ± asymmetrically bifurcate, flexuous, appressed hairs; standard oblong-pandurate, ca. 15 × 4-4.5 mm, below middle distinctly constricted, toward base widened and obtusely angu­larly passing into short, cuneate claw, apex emarginate; wings ca. 14 mm, limbs distinctly incised; keel ca. 10 mm. Ovary ses­sile, densely white hairy. Legumes unknown.

● NW Xinjiang.