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

274. Astragalus polyceras Karelin & Kirilov, Bull. Soc. Imp. Naturalistes Moscou. 15: 332. 1842.

多角黄耆 duo jiao huang qi

Plants subshrubby, 30-40 cm tall, vegetative parts covered with medifixed, appressed hairs. Stems in older parts ligne­ous, 5-12 cm, branched, parts of current year 10-25(-30) cm, very densely covered with white hairs 0.7-0.9 mm. Leaves 3-5 cm; stipules (2-)3-5 mm, densely white hairy; petiole 0.3-0.7 cm, with rachis densely hairy like stem; leaflets in 2 or 3 pairs, 12-20(-30) × (1-)2-4 mm, abaxially densely and adaxially loosely to rather densely or more rarely sparsely covered with hairs 1-1.5 mm. Racemes 6-11(-14) cm, loosely to remotely (4-)9-15-flowered; peduncle 4-8 cm, densely white hairy like stem; bracts 2-4 mm, white and black hairy. Calyx 8-11 mm, densely covered with strongly asymmetrically bifurcate, subap­pressed to ascending, ± flexuous, white hairs 0.8-1 mm and with ± medifixed, flexuous, appressed, black hairs 0.2-0.3 mm; teeth 2-2.5 mm. Petals purple; standard rhombic-elliptic to rhombic-obovate, 16-21 × ca. 8 mm, apex emarginate, mostly distinctly constricted below middle; wings 15-19 mm; keel 14-15 mm. Legumes sessile, straight or slightly curved, 23-31 mm, 1.5-2 mm high and 2-3 mm wide, with a straight beak 1-2 mm; valves densely covered with symmetrically to pre­dominantly strongly asymmetrically bifurcate, appressed to pre­dominantly ascending, white hairs up to 1 mm and sometimes with shorter, appressed, black hairs.

Xinjiang [Kazakhstan].


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