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FOC | Family List | FOC Vol. 10 | Fabaceae | Fabaceae Tribe GALEGEAE

40. Astragalus sect. Ornithopodium Bunge, Mém. Acad. Imp. Sci. Saint Pétersbourg, sér. 7. 11(16): 100. 1868.

鸟爪组 niao zhua zu

Plants herbaceous or subshrubby, with developed stems, covered with ± medifixed to strongly asymmetrically bifurcate hairs. Leaves imparipinnate, with 1-12 pairs of leaflets; stipules free from petiole or shortly adnate to it, vaginate-connate behind stem, more rarely upper ones or all free from each other. Inflorescences usually long, loosely to remotely flowered, rarely short, densely flowered, elongated in fruit. Petals free, pink, reddish, or more rarely violet, mostly violet when dry; wings shorter than standard and longer than keel, limbs rounded at apex or incised. Legumes linear, long, often slightly to more rarely distinctly constricted between seeds, 2-locular; valves leathery, appressed hairy or rarely glabrous.

Thirty-eight species: N Africa, C Asia to China and Mongolia, SW Asia (Caucasus, Iran, Turkey), Europe; 12 species (eight endemic) in China.

1 Leaflets in 1-4 pairs   (2)
+ Leaflets in at least 4 pairs but mostly in distinctly more   (4)
2 (1) Leaflets elliptic, ca. 2 × as long as wide; calyx 7-8 mm; standard 13-15 mm.   255 A. hamiensis
+ Leaflets linear to narrowly elliptic, ca. 6 × as long as wide; calyx 11-14 mm; standard at least 19 mm   (3)
3 (2) Plants herbaceous; leaflets in 1-3 pairs, 10-45 × 2-6 mm; calyx teeth 4-5 mm; petals white, standard 19-21 mm; ovary and legumes subsessile, legumes 25-45 mm.   258 A. kifonsanicus
+ Plants subshrubby; leaflets in 3 or 4 pairs, 7-20 × 1-3 mm; calyx teeth 1-1.5 mm; petals pink to pale violet, standard 24-25 mm; ovary and legumes distinctly stipitate; legumes 12-15 mm.   253 A. chorgosicus
4 (1) Petals all or only wings and keel pale yellow   (5)
+ Petals all white, pink, purple, or violet   (8)
5 (4) Plants herbaceous, only with white hairs; standard ca. 15 mm.   263 A. shadiensis
+ Plants subshrubby, at least in calyx also with black hairs; standard at least 20 mm but mostly distinctly longer   (6)
6 (5) Stipules 5-9 mm; bracts 4-5 mm; calyx covered with appressed to ascending, symmetrically or asymmetrically bifurcate, flexuous hairs; standard 25-27 × 10-11 mm.   262 A. maiusculus
+ Stipules distinctly shorter; bracts 1.5-2 mm; calyx covered with appressed, medifixed hairs; standard 20-24 × 7-8 mm   (7)
7 (6) Stems very densely hairy; stipules 3-5 mm, those of lower leaves high connate; calyx 8-10 mm; limbs of wings minutely incised, wings and keel yellow, standard purple; legumes covered with ± symmetrically to slightly asymmetrically bifurcate, appressed hairs.   256 A. huochengensis
+ Stems loosely hairy; stipules 2-3 mm, shortly connate; calyx 11-13 mm; limbs of wings distinctly and often deeply obliquely incised, all petals pale yellow; legumes covered with strongly asymmetrically bifurcate, ascending to spreading hairs.   254 A. dsharkenticus
8 (4) Leaflets adaxially glabrous or with a few scattered hairs only; calyx up to 8 mm; standard up to 14 mm   (9)
+ Leaflets distinctly hairy adaxially; calyx 9-12 mm; standard at least 16 mm but mostly longer   (10)
9 (8) Stipules 5-7 mm, all high connate behind stem; bracts 2-4 mm; calyx 5-6 mm, covered with black hairs up to 1 mm and with strongly asymmetrically bifurcate white hairs up to 1.2 mm; legumes 25-30 mm.   260 A. leansanicus
+ Stipules 6-10 mm, only those of lowest leaves very shortly connate, all others free; bracts 5-10 mm; calyx ca. 8 mm, covered with medifixed only white hairs up to 0.8 mm; legumes ca. 15 mm.   264 A. supralaevis
10 (8) Calyx teeth 4-5 mm; standard ca. 16 mm; legumes 17-20 mm, with a very short beak.   259 A. lanzhouensis
+ Calyx teeth 1-3 mm; standard 20-22 mm; legumes at least 22 mm but mostly distinctly longer, with a distinct beak 2-6 mm   (11)
11 (10) Leaflets in 4-6 pairs; legumes sparsely covered with medifixed to asymmetrically bifurcate, appressed white hairs.   261 A. limprichtii
+ Leaflets in 6-10 pairs; legumes villous with asymmetrically bifurcate, subappressed to ascending or spreading white hairs up to 1 mm and with fewer, more appressed and shorter black hairs.   257 A. karkarensis


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