黑齿黄耆 hei chi huang qi

Plants 8-10 cm tall; hairs in vegetative parts flattened, long acuminate, white, widest near base, elsewhere slender and black. Stems ascending, at base stolonlike, glabrous, with few, remote leafless stipules, in upper part loosely to rather densely covered with stiff, ascending to spreading, white hairs 0.6-0.8 mm, toward nodes mostly black hairy. Leaves 3-5 cm; stipules 6-7 mm, those without developed leaves connate to middle, other ones free from each other, lower ones glabrous, upper ones loosely white and black hairy; petiole 0.8-1.5 cm, with rachis loosely white hairy like stem; leaflets in 6-8 pairs, narrowly elliptic, 5-14 × 2.5-5 mm, abaxially loosely covered with appressed hairs 0.2-0.5 mm, adaxially glabrous but with densely white hairy margins, apex obtuse. Racemes short, densely many flowered; peduncle 1.5-3.5 cm, loosely to densely covered with subappressed black hairs 0.3-1 mm; bracts 4-6 mm, predominantly black hairy. Calyx ca. 5 mm, densely covered with ascending to partly nearly spreading black hairs; teeth ca. 2 mm. Petals probably violet in life, pale yellowish brown when dry; standard oblong, ca. 9 × 4 mm, without dis­tinct claw, apex widely and deeply incised; wings ca. 7.5 mm, limbs obtriangular, widest at widely and deeply incised tip; keel ca. 6.5 mm. Ovary subsessile, ellipsoid, glabrous. Legumes un­known.

● E Xizang.