| 1 |
Legume contorted
|
(2)
|
| 1 + |
Legume straight or slightly curved
|
(6)
|
| 2 (1) |
Pinnae 1 or 2 pairs; leaflets alternate or opposite
|
(3)
|
| 2 (1) + |
Pinnae 2-8 pairs; leaflets opposite
|
(4)
|
| 3 (2) |
Leaflets alternate except for terminal pair, obliquely ovate or oblong, 5-9 × 2-4.5 cm.
(1)
|
A. lucidum
|
| 3 (2) + |
Leaflets opposite, elliptic or ovate-elliptic, 7-18 × 3-9 cm.
(2)
|
A. ellipticum
|
| 4 (2) |
Branchlets angulate.
(3)
|
A. clypearia
|
| 4 (2) + |
Branchlets terete
|
(5)
|
| 5 (4) |
Pinnae 2 or 3 pairs; leaflets 4-7 pairs, larger, 2-9 × 1.5-4 cm.
(4)
|
A. utile
|
| 5 (4) + |
Pinnae 5 or 6 pairs; leaflets 7-14 pairs, smaller, 0.5-2 × 0.4-0.9 cm.
(5)
|
A. multifoliolatum
|
| 6 (1) |
Inflorescence cauliflorous; legume valves slightly contorted after dehiscence, conspicuously netted.
(6)
|
A. cordifolium
|
| 6 (1) + |
Inflorescence on leafy branches, terminal or axillary; legume valves not as above
|
(7)
|
| 7 (6) |
Pinnae (1 or)2 pairs, if 1 pair then leaflets alternate
|
(8)
|
| 7 (6) + |
Pinnae 1 pair; leaflets opposite or subopposite
|
(10)
|
| 8 (7) |
Young branchlets and leaf rachis conspicuously angulate; leaflets 8-30 × 5-12 cm.
(7)
|
A. eberhardtii
|
| 8 (7) + |
Young branchlets and leaf rachis not angulate; leaflets smaller than above
|
(9)
|
| 9 (8) |
Leaflets opposite, abaxially sparsely ferruginous pubescent, lateral veins 5-7 pairs.
(8)
|
A. balansae
|
| 9 (8) + |
Leaflets alternate, except terminal one, both surfaces glabrous, lateral veins 3-5 pairs.
(9)
|
A. alternifoliolatum
|
| 10 (7) |
Glands at petiole flat or concave
|
(11)
|
| 10 (7) + |
Glands at petiole and leaf rachis raised, more than 1 mm high, hollow
|
(13)
|
| 11 (10) |
Leaflets 1-3 pairs, lateral veins 4-6 pairs.
(14)
|
A. kerrii
|
| 11 (10) + |
Leaflets 2 or 3 pairs, lateral veins 3, 4, or 6-11 pairs
|
(12)
|
| 12 (11) |
Lateral veins 3 or 4 pairs.
(15)
|
A. robinsonii
|
| 12 (11) + |
Lateral veins 6-11 pairs.
(16)
|
A. turgidum
|
| 13 (10) |
Leaflets 2 pairs
|
(14)
|
| 13 (10) + |
Leaflets 2 or 3 pairs
|
(15)
|
| 14 (13) |
Petiolar gland 3-7 mm in diam.; leaflets to 25 cm.
(10)
|
A. xichouense
|
| 14 (13) + |
Petiolar gland 0.5-3 mm in diam.; leaflets to 14 cm.
(11)
|
A. chevalieri
|
| 15 (13) |
Petiolar gland (1.5-)2(-3) mm in diam.; leaflets 3 pairs.
(12)
|
A. laoticum
|
| 15 (13) + |
Petiolar gland 0.5-1.5 mm in diam.; leaflets 2 or 3 pairs.
(13)
|
A. tonkinense
|
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