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

278. Astragalus angustissimus Bunge, Mém. Acad. Imp. Sci. Saint Pétersbourg, sér. 7. 11(16): 135. 1868.

狭叶黄耆 xia ye huang qi

Plants subshrubby, (10-)15-35(-45) cm tall, subacau­lescent to shortly caulescent. Stems ligneous in lower parts, parts of current year 1-3(-5) cm, very densely covered with medifixed, appressed, white hairs 0.2-0.3 mm. Leaves (3-)5-12(-14) cm; stipules 5-12 mm, glabrous; petiole 2-3(-5) cm, like rachis loosely to rather densely white hairy; leaflets 5-11(-14) pairs, narrowly linear, (13-)20-30 × 1-2(-3) mm, abaxially densely and adaxially sparsely to loosely covered with medifixed, appressed hairs 0.8-1 mm, apex acute. Ra­cemes 3-4 cm, 12-20-flowered, elongating in fruit up to 6-14 cm; peduncle (5-)10-18 cm, hairy; bracts 4-10 mm, white and black hairy. Calyx 10-15 mm, tubular, densely covered with subbasifixed, ± spreading, white hairs 1-1.5 mm and especially at dorsal side with mostly shorter and more appressed black hairs; teeth 2-4 mm. Petals ?yellow; standard narrowly elliptic, 22-25 × 6-7.5 mm, apex slightly retuse; wings 17-18 mm; keel 14-15 mm. Legumes sessile, erect, ellipsoid, 8-12 mm, 3-4 mm high and 4-5 mm wide, with a slightly curved beak 3-4 mm, incompletely 2-locular; valves densely covered with strongly asymmetrically bifurcate, appressed, white hairs 0.8-1 mm, in upper part with mostly shorter black hairs mixed in.

NW Xinjiang [Kazakhstan, Kyrgyzstan].


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