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38. Astragalus sect. Craccina (Steven) Bunge, Mém. Acad. Imp. Sci. Saint Pétersbourg, sér. 7. 11(16): 97. 1868.
旱生组 han sheng zu
Craccina Steven, Bull. Soc. Imp. Naturalistes Moscou 29(2): 144. 1856.
Perennials with well-developed or rarely short stems, rarely subshrubby, with bifurcate white and black hairs. Stipules nearly free from petiole, at least those of lower leaves vaginate-connate behind stem. Racemes loose, more rarely dense, borne on well-developed peduncle. Calyx campanulate or shortly tubular-campanulate. Flowers mostly small. Petals purplish or violet, rarely white; standard often without distinct claw; wings as long as or mostly longer than keel, with obtuse to incised tip. Legumes sessile or shortly stipitate, narrowly oblong to narrowly ellipsoid, grooved dorsally, incompletely to completely 2-locular, more rarely 1-locular.
Twenty-one species: China, Mongolia, Russia (Siberia); C Asia, SW Asia (Iran), Europe; seven species (three endemic) in China.
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| 1 |
Leaflets linear or very narrowly oblong, more than 4 × as long as wide |
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(2) |
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Leaflets wider, less than 2-3 × as long as wide |
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(4) |
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| 2 (1) |
Plants small, 7-20 cm tall; leaflets in mostly 3-5 pairs; wing limbs distinctly obliquely emarginate; legumes 2-locular. |
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247 A. miniatus |
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Plants large, 20-80 cm tall; leaflets in 6-11 pairs; wing limbs obtuse |
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(3) |
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| 3 (2) |
Stem and rachis with hairs 0.1-0.25 mm; bracts ca. 1 mm; calyx 2-2.5 mm, with predominantly white hairs; legumes incompletely to nearly completely 2-locular. |
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244 A. consanguineus |
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Stem and rachis with hairs 0.3-0.8 mm; bracts 1.5-3 mm; calyx 3(-4) mm, with predominantly black hairs; legumes nearly 1-locular. |
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249 A. sulcatus |
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| 4 (1) |
Leaflets in 1 pair or in uppermost leaves only 1 terminal. |
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246 A. hotianensis |
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Leaflets in at least 3 pairs, but mostly in more |
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(5) |
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| 5 (4) |
All stipules vaginate-connate to middle; wing limbs subobtuse; calyx teeth 2-2.5 mm; legumes sessile or subsessile, 1-locular. |
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248 A. miyalomontis |
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All or only lower stipules shortly connate; wing limbs incised; calyx teeth up to 1.5 mm; legumes sessile or stipitate, incompletely or completely 2-locular |
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(6) |
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| 6 (5) |
Calyx teeth 0.1-0.8 mm; legumes with a stipe 3-5 mm, incompletely 2-locular, covered with medifixed black or white and black hairs. |
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245 A. discolor |
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Calyx teeth 1-1.5 mm; legumes sessile, completely 2-locular, covered with symmetrically or asymmetrically or even subbasifixed white hairs. |
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250 A. variabilis |
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