| 1 |
Standard and wings hairy |
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(2) |
| + |
All petals glabrous |
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(4) |
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| 2 (1) |
Leaflets on both surfaces densely covered with appressed hairs; calyx 13-21 mm; standard 23-28 mm. |
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219 A. nicolaii |
| + |
Leaflets glabrous adaxially; calyx 9-15 mm; standard 14-19 mm |
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(3) |
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| 3 (2) |
Stipules green; leaves 7-10 cm, sessile or with very short petiole; legumes with a stipe 1-3 mm. |
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220 A. orbiculatus |
| + |
Stipules whitish membranous; leaves 15-30 cm; petiole 4-7 cm; legumes sessile. |
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217 A. lasiopetalus |
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| 4 (1) |
Plants completely glabrous |
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(5) |
| + |
Plants at least in part hairy |
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(7) |
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| 5 (4) |
Plants acaulescent; leaflets in 7 or 8 pairs, suborbicular; peduncle 15-18 cm; racemes as long as peduncle, remotely up to 20-flowered. |
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216 A. fukangensis |
| + |
Plants caulescent, rarely acaulescent; leaflets in 10-15 pairs, ovate; peduncle much shorter; racemes 5-9-flowered |
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(6) |
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| 6 (5) |
Plants glabrous or sometimes in part to loosely hairy, acaulescent or with a stem sometimes up to 7 cm; stipules 10-20 mm, narrowly ovate, not distinctly nerved; peduncle 0.5-2 cm. |
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223 A. psilosepalus |
| + |
Plants always completely glabrous, with a stem up to 20 cm; stipules 20-30 mm, narrowly triangular, very long acuminate, distinctly longitudinally nerved; peduncle 8-9 cm. |
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218 A. luculentus |
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| 7 (4) |
Stipules distinctly longitudinally nerved; inflorescence often with some black hairs; petiole and rachis often at least partly hardening toward end of vegetation period and persistent |
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(8) |
| + |
Stipules without distinct longitudinal nerves; plants never with black hairs |
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(10) |
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| 8 (7) |
Plants densely or sparsely covered with hairs 1-2(-2.5) mm; leaflets mostly hairy on both surfaces. |
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224 A. rhizanthus |
| + |
Plants sparsely covered with hairs 0.3-0.7(-1) mm; leaflets glabrous adaxially |
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(9) |
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| 9 (8) |
Standard 19-23 mm; auricles of wing limbs ca. 1 mm; ovary and legumes subsessile, hairy. |
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221 A. pindreensis |
| + |
Standard 24-27 mm; auricles of wing limbs 2-2.5 mm; ovary and legumes with a stipe 2-4 mm, glabrous. |
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226 A. webbianus |
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| 10 (7) |
Leaflets adaxially glabrous or hairy; keel limbs slightly obliquely elliptic, stretched straight forward. |
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225 A. schanginianus |
| + |
Leaflets adaxially glabrous |
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(11) |
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| 11 (10) |
Keel limbs large, at least as long as wing limbs, only connate in proximal 1/3 |
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(12) |
| + |
Keel limbs always shorter than wing limbs, connate nearly to top |
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(13) |
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| 12 (11) |
Keel always longer than wings, limbs much larger (longer and wider) than wing limbs; petiole and rachis slender. |
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215 A. flexus |
| + |
Keel ca. as long as wings, limbs as long as wing limbs; petiole and rachis stout, at base 2-3 mm thick; leaflets with whitish cartilaginous margins, with long hairs sitting on small tubercles. |
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213 A. austrodshungaricus |
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| 13 (11) |
Stipules 10-20 mm, free from petiole; leaves 12-35 cm; leaflets 8-30 × 5-22 mm, glabrous or abaxially sparsely hairy; calyx glabrous or with a few hairs at teeth only. |
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223 A. psilosepalus |
| + |
Stipules distinctly shorter, if upper ones up to 15 mm, then adnate to petiole for 3-5 mm; leaves up to 16 cm; leaflets up to 10(-14) × ca. 6 mm, abaxially sparsely to rather densely hairy; calyx at least in upper part distinctly hairy |
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(14) |
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| 14 (13) |
Stipules adnate to petiole for 3-5 mm; leaflets densely crowded to touching; calyx 13-15(-17) mm, teeth 5-6 mm; legumes sessile, with a beak 3-5 mm, covered with hairs up to 3 mm. |
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214 A. charguschanus |
| + |
Stipules adnate to petiole up to 1 mm; leaflets not densely crowded; calyx 11-12 mm, teeth 2.5-4 mm; legumes with a stipe ca. 3 mm, with a beak ca. 2 mm, covered with hairs 1-2 mm. |
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222 A. przhevalskianus |
