川西黄耆 chuan xi huang qi

Astragalus craibianus var. baimashanensis C. Chen & Z. G. Qian; A. saccatocarpus K. T. Fu.

Plants 10-18 cm tall, sparsely covered with subappressed to ascending, white to mostly dark brownish or blackish hairs 0.5-1 mm. Stems ascending to erect, 3-12 cm, glabrous. Leaves 4-8 cm; stipules 8-15 mm, glabrous or very sparsely ciliate; petiole 1-2 cm, like rachis mostly glabrous; leaflets in 5-10 pairs, narrowly elliptic, 5-14 × 3-5 mm, abaxially sparsely hairy or subglabrous, adaxially glabrous, apex obtuse to sub­acute, shortly acuminate-mucronulate. Racemes 2-3 cm, rather densely 4-9-flowered; peduncle solitary on 1 stem, 3-7 cm, sparsely hairy; bracts 5-10 mm, sparsely ciliate. Calyx 6-7 mm, sparsely to rather loosely covered with white and pre­dominantly brownish to blackish hairs; teeth 3-4 mm. Petals bronzy yellow; standard widely obovate to suborbicular, 14-16 × 8-10 mm, strongly recurved above claw, apex rounded to scarcely emarginate; wings 15-16 mm, limbs ca. 10 × 4 mm, auricle narrow, 3-3.5 mm, apex acute; keel 15-16 mm. Style with minute hairlets below stigma. Legumes inflated obovoid, 18-28 mm, ca. 5 mm high and 9-10 mm wide, rounded ven­trally and dorsally, with a minute beak; valves rather densely covered with subappressed to slightly ascending blackish hairs 0.3-0.6 mm and with longer white hairs up to 1 mm.

● 3300-4800 m. Sichuan, Yunnan.