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

364. Astragalus yanerwoensis Podlech & L. R. Xu, Novon. 17: 234. 2007.

长喙黄耆 chang hui huang qi

Astragalus pavlovianus Gamajunova var. longirostris S. B. Ho.

Plants 12-25 cm tall, caulescent, subshrubby. Stems in older parts ligneous, parts of current year 5-10 cm, very densely hairy; hairs medifixed, appressed, white, at nodes also black, 1-1.5 mm. Leaves 2.5-5 cm; stipules 3-7 mm, shortly adnate to petiole, densely covered with white and sometimes also black hairs; petiole 1-2 cm, like rachis densely to rather densely covered with medifixed, appressed, white hairs 0.8-1 mm and with more spreading, asymmetrically bifurcate hairs 1.5-2 mm; leaflets in 4-6 pairs, 7-15 × 3-5 mm, both surfaces sparsely to rather densely covered with appressed to slightly ascending, medifixed hairs 1-2 mm. Racemes loosely to rather densely 10-12-flowered; peduncle 1.5-4 cm, loosely to densely hairy, hairs symmetrically or asymmetrically bifurcate, ± flex­uous, appressed to slightly ascending or more rarely also spreading, white, toward raceme sometimes also black, 0.5-1.5 mm; bracts 4-6 mm, with ± spreading, partly basifixed, white and black hairs. Calyx ca. 15 mm, rather densely covered with strongly asymmetrically bifurcate to basifixed, ± spreading, white hairs 1.5-2 mm and with few, more symmetrically bifur­cate, subappressed, flexuous hairs 0.5-1 mm, with black hairs mixed in; teeth 2-3 mm. Petals ?pale violet or yellow; standard obovate, ca. 24 mm, slightly constricted in middle, with a rather long claw, apex emarginate; wings ca. 22 mm; keel ca. 20 mm. Legumes sessile, 15-25 mm (without beak), slightly curved, attenuate into a rigid beak 6-10 mm; valves densely covered with subbasifixed, ± spreading, white hairs 1-2 mm, sometimes completely glabrous.

● Xinjiang.


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