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31b. Astragalus "Purpurascentes group"
布河黄耆群 bu he huang qi qun
Plants acaulescent or nearly so, with white hairs. Calyx tubular. Petals always glabrous, mostly fading red or purple, mostly of nearly equal length; auricles of wings mostly large, 2-4 mm; limbs of keel with widely curved lower edge and mostly sigmoid upper edge, tip therefore often slightly beaklike, upper edge for whole length or in upper part furnished with minute teeth. Legumes mostly with leathery vaulted valves.
Seventy-nine species: Afghanistan, China, Mongolia, Pakistan, Russia; C and SW Asia, E Europe; four species in China.
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| 1 |
Plants 6-12 cm tall; racemes subsessile, 2-flowered; bracts 4-6 mm; legumes with a stipe 1-2 mm, 10-15 mm. |
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230 A. taldicensis |
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Plants distinctly taller; racemes with a distinct peduncle, mostly with more flowers; bracts distinctly longer; legumes with a much longer stipe, 15-28 mm |
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(2) |
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| 2 (1) |
Leaflets in 18-30 pairs, narrowly elliptic, 5-12 × 2-4 mm; racemes 2- or 3-flowered. |
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228 A. buchtormensis |
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Leaflets in 9-17 pairs, ovate to obovate, 8-15 × 4-11 mm; racemes 6-15-flowered |
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(3) |
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| 3 (2) |
Peduncle 4-8 cm, glabrous or sparsely hairy; bracteoles absent. |
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227 A. altaicola |
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Peduncle 6-14 cm, densely hairy; bracteoles present, linear, 2-3 mm. |
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229 A. neochorgosicus |
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Lower Taxa
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