1	Stipules 30-70 mm, behind stem connate up to top.		63 A. stipulatus
+	Stipules shorter, not connate up to top, if shortly connate, then considerably shorter		(2)
2 (1)	Stipules 10-45 mm, 2 of 1 leaf often strongly unequal.		53 A. graveolens
+	Stipules at most up to 20(-25) mm but mostly distinctly shorter, equal		(3)
3 (2)	Stipules of main stem high connate behind stem		(4)
+	Stipules of main stem free from each other, sometimes shortly connate in leaves of lateral branches or in front of petiole		(5)
4 (3)	Bracts 2-3 mm; calyx 8-10 mm, glabrous.		61 A. moupinensis
+	Bracts 5-6 mm; calyx 6-7 mm, loosely to densely white and black hairy.		54 A. hancockii
5 (3)	Leaflets hairy adaxially, sometimes in some leaves glabrous		(6)
+	Leaflets of all leaves glabrous adaxially		(10)
6 (5)	Leaflets 8-10 × 4-5 mm; rachis and peduncle covered with ± spreading hairs.		59 A. matiensis
+	Leaflets distinctly larger, at least 10 mm and up to 35(-40) mm; rachis and peduncle covered with appressed to slightly ascending hairs		(7)
7 (6)	Stem 1-3 mm in diam.; calyx 4-6.5 mm, teeth 0.5-1.5 mm or sometimes indistinct.		49 A. chlorostachys
+	Stem (2-)4-6(-8) mm in diam., often hollow; calyx 6-9 mm, at least longer teeth 1.5-3 mm		(8)
8 (7)	Plants in vegetative parts with white hairs only.		55 A. khasianus
+	Plants in vegetative parts with white and black or predominantly blackish brown hairs		(9)
9 (8)	Stem unbranched; stipules all free; bracts persistent; stigma glabrous.		48 A. chengkangensis
+	Stems strongly branched; stipules in non-flowering lateral branches often connate behind stem or in front of petiole; bracts soon falling; stigma shortly papillose.		50 A. concretus
10 (5)	Plants completely glabrous, only leaflet just after development abaxially sparsely hairy but soon also glabrous.		46 A. basiflorus
+	Plants hairy at least in parts when fully developed		(11)
11 (10)	Calyx glabrous or only between and at teeth sparsely and shortly ciliate		(12)
+	Calyx hairy		(15)
12 (11)	Leaflets in 5-7 pairs; peduncles 14-18 cm; calyx purple red; petals reddish brown; ovary densely black hairy.		57 A. lamalaensis
+	Leaflets in (6-)8-18 pairs; peduncles up to 4.5 cm; calyx not purple red; petals yellow to greenish yellow; legumes glabrous		(13)
13 (12)	Stipules in main stem ca. 5 mm, in lateral branches 2-3 mm; leaflets 4-7 mm, truncate to retuse; bracts 1-3 mm; calyx ca. 4 mm; standard ca. 9 × 5 mm.		47 A. brachytrichus
+	Stipules 6-16 mm; leaflets 8-15 mm, rounded; bracts 4-5 or 6-12 mm; calyx at least 4 mm but mostly longer; standard 11-13 × ca. 7 mm		(14)
14 (13)	Bracts 4-5 mm; calyx 4-6 mm, glabrous, teeth ca. 1.5 mm; legumes with a stipe ca. 4 mm, ca. 12 mm, ca. 5 mm high.		58 A. lucidus
+	Bracts 6-12 mm; calyx 6-10 mm, teeth 2-4 mm, between and at teeth shortly black ciliate; legumes with a stipe 5-11 mm, 10-20 mm, 6-12 mm high.		60 A. minshanensis
15 (11)	Calyx 9-11 mm, with teeth 4-5 mm; standard ca. 18 mm.		65 A. zadaensis
+	Calyx at most 9 mm but mostly distinctly shorter, teeth up to 3 mm; standard shorter, up to 15 mm		(16)
16 (15)	Bracts 1.5-3 mm; calyx 3-5 mm; bracteoles absent		(17)
+	Bracts at least 4 mm and up to 10(-17) mm; calyx longer; bracteoles often present		(18)
17 (16)	Stems in lower parts rather densely covered with spreading white hairs 0.5-1 mm and with a few appressed black hairs 0.3-0.4 mm, partly glabrescent and in older parts to completely glabrous, in upper parts sparsely to loosely covered with short appressed black hairs 0.3-0.5 mm; petals cream, sometimes flushed with violet; standard ca. 13 × 5 mm, with slightly distinct short tonguelike tip, below middle slightly constricted.		62 A. rhododendrophilus
+	Stems glabrous at base, in upper parts rather densely covered with curly subappressed hairs 0.1-0.25 mm; petals yellow; standard 9-11 × 5.5-7.5 mm, rhombic-ovate.		56 A. kialensis
18 (16)	Stems strongly branched; stipules in non-flowering lateral branches often connate behind stem or in front of petiole; bracts soon falling; stigma shortly papillose.		50 A. concretus
+	Stems not strongly branched; stipules all free from each other; stigma glabrous		(19)
19 (18)	Leaflets in 7-9 pairs; petals cream, sometimes flushed with red; stipules 5-7 mm.		64 A. tumbatsicus
+	Leaflets in at least 10 but mostly in distinctly more pairs; petals yellow; stipules 8-16 mm		(20)
20 (19)	Stems 1.5-2 mm thick; bracts glabrous; bracteoles, if present, 0.4-1 mm; stipules glabrous or very sparsely ciliate.		51 A. dumetorum
+	Stems 2-6 mm thick; bracts black hairy or white ciliate; bracteoles mostly present, 1.5-3 mm; stipules sparsely to loosely hairy or long ciliate		(21)
21 (20)	Stipules sparsely to loosely white and black hairy; leaflets in 15-19 pairs; bracts predominantly black hairy, persistent; calyx 5-6 mm; standard 10-12 mm; legumes with a short stipe.		52 A. forrestii
+	Stipules long spreading ciliate; leaflets in 10-13 pairs; bracts white ciliate, soon falling; calyx 6-8 mm; standard 13-15 mm; legumes with a stipe 5-7 mm.		55 A. khasianus