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30. Astragalus sect. Alopecias (Steven) Bunge, Mém. Acad. Imp. Sci. Saint Pétersbourg, sér. 7. 11(16): 58. 1868.
苦豆子组 ku dou zi zu
Alopecias Steven, Bull. Soc. Imp. Naturalistes Moscou 29(2): 143. 1856.
Plants perennial, herbaceous, with well-developed stem and white, rarely reddish, basifixed hairs. Stipules greenish, shortly adnate to petiole. Racemes with a short stout peduncle, densely many flowered, globose to cylindric; bracts filiform to linear. Bracteoles absent (in Chinese species). Flowers subsessile or with short pedicel. Calyx campanulate to tubular, mostly slightly to rarely distinctly inflated ellipsoid, with subulate teeth. Petals glabrous or more rarely hairy; wing limbs obtuse at apex. Legumes mostly included into calyx, sessile, mostly short, 2-locular.
Forty-nine species: Afghanistan, China, Mongolia, Russia (Siberia); C and SW Asia, Europe; four species (one endemic) in China.
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| 1 |
Standard hairy. |
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211 A. burqinensis |
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All petals glabrous |
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(2) |
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| 2 (1) |
Racemes cylindric, 9-13 cm; bracts 6-9 mm; calyx 20-25 mm. |
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209 A. alopecias |
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Racemes ovoid, up to 6 cm, if sometimes up to 9.5 cm, then calyx 12-19 mm; bracts 10-20 mm |
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(3) |
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| 3 (2) |
Leaflets in 17-27 pairs, ovate to elliptic, mostly 20-30 × 10-15 mm; calyx 12-19 mm, with teeth 5-7 mm. |
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210 A. alopecurus |
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Leaflets in 12-17 pairs, widely ovate to widely elliptic, 8-25 × 5-20 mm; calyx 15-23 mm, with teeth 8-11 mm. |
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212 A. vulpinus |
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