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14. Astragalus sect. Lithophili Bunge, Mém. Acad. Imp. Sci. Saint Pétersbourg, sér. 7. 11(16): 29. 1868.
岩生组 yan sheng zu
Plants perennial, acaulescent or with a well-developed stem, herbaceous, covered with long, basifixed, mostly spreading hairs. Leaves imparipinnate with marcescent rachis; stipules free or more rarely shortly adnate to petiole. Racemes subsessile or with a short peduncle, few flowered. Calyx campanulate to tubular. Legumes subsessile to stipitate, 2-locular, with thin, membranous walls.
Four species: NW and W China, N India, Kazakhstan, Kyrgyzstan, Tajikistan; three species (one endemic) in China.
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| 1 |
Plants acaulescent; calyx ca. 10 mm; petals white; standard ca. 12 mm; legumes sessile, ca. 10 mm. |
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73 A. dalaiensis |
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Plants with a well-developed stem; calyx at least 20 mm; petals yellow; legumes with a stipe 4-5 mm, 15-30 mm |
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(2) |
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| 2 (1) |
Stems, rachises, and peduncles glabrous or sparsely hairy; leaflets in 12-15 pairs, ovate to elliptic, 8-15 × 4-9 mm. |
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74 A. lithophilus |
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Stems, rachises, and peduncles densely villous; leaflets in 9-11 pairs, narrowly elliptic, 10-25 × 2-5 mm. |
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75 A. munroi |
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