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FOC | Family List | FOC Vol. 10 | Fabaceae | Astragalus

299. Astragalus heptapotamicus Sumnevicz, Sist. Zametki Mater. Gerb. Krylova Tomsk. Gosud. Univ. Kuybysheva. 1933 (5-6): 7. 1933.

七溪黄耆 qi xi huang qi

Astragalus poljakovii Popov; A. wensuensis S. B. Ho.

Plants 2-4 cm tall, acaulescent, densely caespitose, veg­etative parts densely covered with appressed to subappressed, ± medifixed, white hairs 0.5-1 mm. Leaves 0.5-4 cm; stipules 2.5-4(-6) mm, shortly adnate to petiole, behind stem connate to middle or even higher up, rather densely hairy; petiole 0.3-1.5 cm, like rachis densely hairy; leaflets in (1 or)2-4 pairs, close together, 2-6 × 1-2 mm, flat or boot-shaped to folded, both surfaces densely hairy. Racemes (1 or)2-5-flowered; peduncle 0.3-3 cm, hairy like rachis; bracts 1.5-3 mm, hairy, margins with subbasifixed hairs. Calyx 9-10(-13) mm, densely covered with symmetrically or asymmetrically bifurcate, subappressed, white hairs 0.5-0.8 mm and often with much shorter black hairs especially at dorsal side; teeth 1.5-3.5 mm. Petals pale purplish; standard obovate, 17-22 × 9-10 mm, slightly constricted below middle, apex emarginate; wings 15-20 mm, limbs obliquely in­cised; keel 13-17 mm. Legumes subsessile, 18-22 mm, 3.5-5 mm high and ca. 2 mm wide, apex acuminate; valves densely villous with ascending to spreading white hairs 0.5-3 mm, gla­brescent with age.

1700-2400 m. Xinjiang [Kazakhstan].


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