玉门黄耆 yu men huang qi

Plants 15-30 cm tall, shortly caulescent. Stems several, 2-10 cm, densely covered with medifixed, appressed, white hairs 0.6-1 mm. Leaves 5-12 cm; stipules 4-5 mm, hairy; petiole 2-5 cm, like rachis densely hairy; leaflets in 2 or 3 pairs, linear, 10-25 × 1-3 mm, both surfaces sparsely to rather densely appressed hairy. Racemes 3-4 cm, rather dense; peduncle 7-15 cm, hairy; bracts 2-3 mm, loosely predominantly black hairy. Calyx narrowly tubular, 8-12 mm, rather densely covered with appressed white and predominantly black hairs; teeth 2-4 mm. Petals purplish red; standard narrowly obovate, 17-20 × 6-7 mm, apex retuse; wings 14-18 mm, limbs distinctly emargi­nate; keel 10-15 mm. Legumes sessile, straight to slightly curved, 10-15 mm, ca. 2 mm high and wide, shortly acuminate at apex, 2-locular; valves with appressed white and black or with predominantly black hairs.

● Arid slopes; 1900-2100 m. W Gansu.

This name was originally published by S. B. Ho (Bull. Bot. Res., Harbin 3(1): 65. 1983) but not validly so because two gatherings were indicated as types (Vienna Code, Art. 37.2).