| 1 | Leaflets crenulate; nerves and veins well visible on both surfaces |
| 1' | Leaflets entire; nerves and veins usually invisible on both surfaces |
| 2 | Leaflets 12-25 per pinna, punctate |
| 2' | Leaflets often 4-10, rarely up to 12-14, per pinna, not punctate |
| 3 | Pods stipitate (1.5-3 mm), the wing gradually narrowed along one side of the seed-bearing part towards its upper 1/3-1/2 |
| 3' | Pods sessile, the wing gradually narrowed along one side of the seed-bearing parttowards its base |
| 4 | Seed-bearing part reticulate |
| 4' | Seed-bearing part usually not reticulate |
