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

132. Astragalus densiflorus Karelin & Kirilov, Bull. Soc. Imp. Naturalistes Moscou. 15: 329. 1842.

密花黄耆 mi hua huang qi

Plants 7-20 cm tall. Stems 2-5(-7) cm, loosely to rather densely covered with appressed white hairs 0.4-0.5 mm. Leaves 2-7 cm; stipules 4-5 mm, ciliate, lower ones shortly vaginate-connate behind stem; petiole 0.6-2 cm, like rachis loosely to rather densely appressed white hairy; leaflets in 4-6 pairs, nar­rowly elliptic, 3-12 × 1-3 mm, abaxially loosely to rather densely appressed hairy, adaxially glabrous. Racemes densely many flowered; peduncle 3-10 cm, rather densely appressed white hairy, below raceme also black hairy; bracts whitish membranous, 2-4 mm, black hairy. Calyx 3-4(-5) mm, ± densely covered with ascending black hairs; teeth 1.5-2 mm. Petals violet; standard elliptic, 5-7 × up to 3.3 mm, apex slightly emarginate; wings 5.8-6 mm; keel 4-4.5 mm. Legume subsessile, globose, ca. 3 mm thick, rounded at apex without beak, 2-locular; valves cross-wrinkled, with spreading white and black hairs. Seeds 2.

Grasslands, steppes; 1500-3800 m. Gansu, Qinghai, Sichuan, Xin­jiang, Xizang [Kazakhstan, Kyrgyzstan].


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