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

71. Astragalus yunnanensis Franchet, Pl. Delavay. 162. 1890.

云南黄耆 yun nan huang qi

Plants 15-25 cm tall, subacaulescent to shortly caulescent; hairs spreading, white, in inflorescence also blackish brown. Stems several, 1-10 cm, 1-3 mm thick, ascending to erect, gla­brous or in upper part sparsely to loosely hairy, in basal parts furnished with vaginate-connate whitish bracts. Leaves 5-16 cm; stipules 4-14 mm, lower ones widely ovate to elliptic, upper ones narrowly triangular, free, sparsely to loosely hairy; petiole 2-4.5 cm, like rachis glabrous or sparsely to loosely hairy; leaf­lets in 5-15 pairs, ovate to elliptic, 3-15 × 2.5-10 mm, abax­ially loosely to densely villous, sometimes only at midvein and margins, adaxially glabrous or sparsely to loosely, more rarely densely, villous, apex obtuse to acute, often with a distinct cusp 1-2 mm. Racemes 1-2.5 cm, rather densely 2-13-flowered, at fruiting time somewhat elongated up to 5 cm; peduncle 4-11 cm, mostly rather densely hairy; bracts 4-10 × 1-3 mm, mostly white hairy. Bracteoles sometimes present. Calyx 8-14.5 mm, densely hairy; teeth 4-7.5 mm. Petals pale yellow, sometimes slightly fading violet; standard widely elliptic to widely ovate, 14-21 × 7-13.5 mm, apex emarginate; wings 13-21 mm; keel 15-21 mm. Legumes with a stipe 3.5-8 mm, narrowly or widely ellipsoid, 12-23 mm, 6-8 mm high, keeled ventrally and dor­sally, with a beak 2-3 mm; valves densely to rather densely covered with spreading white and black hairs.

Gansu, Henan, Qinghai, Shandong, Sichuan, Xizang, Yunnan [In­dia, Nepal].

1 Legumes narrowly ellipsoid, 15-23 mm.   71a subsp. yunnanensis
+ Legumes widely ellipsoid, 12-15 mm.   71b subsp. incanus

Lower Taxa


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Photos by The Biodiversity of the Hengduan Mountains Project  
  • Image/JPEG (David E. Boufford)
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  • Image/JPEG (David E. Boufford)
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