1	Plants subglabrous; ovary and legumes glabrous		(2)
+	Plants distinctly hairy, at least in part; bracteoles rarely present; ovary and legumes hairy		(3)
2 (1)	Plants 3-4 cm tall; peduncle 0.4-1 cm; bracteoles present; standard 12-13 × ca. 10 mm, limb widely obovate to orbicular.		86 A. damxungensis
+	Plants 5-20 cm tall; peduncle 1.5-6 cm; bracteoles absent; standard ca. 11 × 5 mm, limb obovate.		88 A. habamontis
3 (1)	Stem, rachis, and peduncle with double indumentum of very short appressed hairs ca. 0.1 mm and fewer spreading hairs 1-1.5 mm; legumes 12-14 mm, strongly curved.		96 A. semicircularis
+	Stem, rachis, and peduncle with a simple indumentum; legumes mostly shorter, not strongly curved		(4)
4 (3)	Leaf rachis with at least partly spreading hairs		(5)
+	Leaf rachis with appressed to subappressed hairs		(6)
5 (4)	Plants up to 100 cm tall; stipules free from each other; rachis with hairs spreading, white, at base also black, 0.2-0.3 mm; bracts 2-3 mm; limb of standard elliptic without distinct claw.		84 A. chiukiangensis
+	Plants 17-25 cm tall; at least lower stipules vaginate-connate; rachis with hairs appressed to partly spreading, white, 0.4-0.6 mm; bracts ca. 1 mm; limb of standard orbicular, at base abruptly contracted into short claw.		95 A. saxorum
6 (4)	Stipules 2-3 mm, glabrous or subglabrous; plants 40-60 cm tall; petals purple		(7)
+	Stipules mostly longer, hairy at least at margins; plants distinctly smaller, if up to 65 cm tall (in A. leptocladus and A. weixinensis), then petals yellowish to white or white with violet tip		(8)
7 (6)	Rachis with very short, subglobose hairs; bracteoles absent; calyx 3-3.5 mm; standard 9-10 mm, wings ca. 7 mm and keel ca. 10 mm; legumes 8-10 mm, nearly fully 2-locular.		87 A. dulungkiangensis
+	Rachis without subglobose hairs; bracteoles present, 0.5-1 mm; calyx 4-5.5 mm; standard 12-13 mm, wings 10-11 mm and keel 12-14 mm; legumes 15-18 mm, 1-locular.		83 A. changmuicus
8 (6)	Plants up to 65 cm tall; petals yellowish to white or white with violet tip		(9)
+	Plants up to 25 cm tall (in A. chagyabensis up to 30 cm); petals purple, blue, or violet		(10)
9 (8)	Leaflets in 6-9 pairs, elliptic, 5-14 × 2.5-7 mm; petals yellowish to white, standard 8-9 mm, wings ca. 7 mm, keel ca. 8 mm.		97 A. weixinensis
+	Leaflets in 10-12 pairs, narrowly elliptic, 9-20 × 2-6 mm; petals white with violet tip, standard ca. 12 mm, wings ca. 10 mm, keel ca. 11 mm.		91 A. leptocladus
10 (8)	Standard up to 8.5 mm; leaflets in 5-9 pairs		(11)
+	Standard at least 9 mm but in most flowers longer, if sometimes only ca. 8 mm (A. bouffordii), then leaflets in 11-15 pairs		(12)
11 (10)	Leaflets adaxially sparsely hairy to subglabrous; calyx 4-5 mm, covered with white hairs; legumes deeply grooved dorsally, 2-locular.		79 A. aridovallicola
+	Leaflets on both surfaces loosely to rather densely hairy; calyx 2.5-3 mm, covered with black hairs 0.2-0.3 mm and sometimes with longer white hairs; legumes keeled ventrally and dorsally, 1-locular.		90 A. kuschakewiczii
12 (10)	Bracts 3-6 mm; calyx 6-7 mm, teeth 3-4 mm		(13)
+	Bracts distinctly shorter; calyx distinctly shorter, up to 5 mm (only in A. alpinus sometimes up to 6 mm), teeth mostly distinctly shorter		(14)
13 (12)	Stipules ciliate, otherwise glabrous; leaflets in 4-6 pairs, mostly whitish margined; limb of standard ± orbicular, ca. 9 mm wide, at base abruptly contracted into claw.		92 A. mattam
+	Stipules loosely to rather densely white hairy, glabrescent with age; leaflets in 6-9 pairs, not whitish margined; limb of standard elliptic, 5-8 mm wide, at base gradually narrowed.		93 A. oxyodon
14 (12)	Stipules shortly vaginate-connate, upper ones free; leaflets in 4-7 pairs; calyx covered with white hairs.		80 A. batangensis
+	Stipules all distinctly to high vaginate-connate (in A. bouffordii upper ones sometimes free); leaflets in 5-12 pairs; calyx with black or white and black hairs		(15)
15 (14)	Plants 2-10 cm tall; leaflets 1.2-3 × 0.5-1.2 mm, on both surfaces loosely to rather densely hairy; stipules in front of petiole distinctly connate; racemes 1-7-flowered.		85 A. confertus
+	Plants mostly distinctly taller; leaflets distinctly larger, if only 3-5 mm (A. haiyuanensis), then adaxially glabrous or sometimes sparsely hairy; stipules in front of petiole not connate; racemes mostly with distinctly more flowers		(16)
16 (15)	Stipules ciliate or rarely very sparsely hairy (in A. retusifoliatus); rachis sparsely to loosely hairy; calyx black hairy; legumes black or more rarely white and black hairy		(17)
+	Stipules densely hairy; rachis loosely to densely hairy; calyx white and black or black hairy; ovary white hairy (legumes unknown in A. chagyabensis)		(18)
17 (16)	Leaflets in 6-9 pairs, 4-8 × 2-5 mm; bracts 2-3 mm; legumes narrowly oblong, slightly curved, 12-18 mm, incompletely 2-locular.		94 A. retusifoliatus
+	Leaflets in 7-12 pairs, 5-15(-20) × 2-5(-7) mm; bracts 0.5-2 mm; legumes narrowly ellipsoid, straight, 7-13 mm, 1-locular or nearly so.		78 A. alpinus
18 (16)	Plants 20-30 cm tall; leaves 8-10 cm; leaflets 9-13 × 5-7 mm; peduncles 8-10 cm; calyx white and black hairy.		82 A. chagyabensis
+	Plants 10-20 cm tall; leaves 1-6 cm; leaflets 3-8 mm; calyx with other kind of hairs		(19)
19 (18)	Stems, rachises, and peduncles white and black hairy; leaflets in 7-10 pairs; calyx loosely black hairy; standard 9-10 mm, wings ca. 8 mm, keel 9-11 mm.		89 A. haiyuanensis
+	Stems, rachises, and peduncles only with white hairs; leaflets in 11-15 pairs; calyx densely covered with white hairs, often with some black hairs mixed in; standard 8-9 mm, wings ca. 6 mm, keel 7-7.5 mm.		81 A. bouffordii