| 1 | Pinnae 1-3 pairs |
| 1' | Pinnae 3-10 pairs |
| 2 | Leaflets 2 pairs per pinna |
| 2' | Leaflets 7-40 pairs per pinna |
| 3 | Leaflets 20-40 pairs per pinna. |
| 3' | Leaflets 7-10 pairs per pinna |
| 4 | Leaflets narrowly oblong, up to 2 by 0.5 cm. Stamens with a white proximal part and a pink distal part |
| 4' | Leaflets subfalcate, elliptic, lanceolate or oblong-lanceolate, 0.5-4.7 by 0.3-1.7 cm. Stamens blood-red |
| 5 | Leaflets 7-10 pairs per pinna |
| 5' | Leaflets 20-40(-60) pairs per pinna. |
| 6 | Single flowers sessile |
| 6' | Flowers pedicellate |
| 7 | Flowers glabrous |
| 7' | Corolla densely brown hairy outside |
