| 1 | Leaves unifoliolate |
| 1' | Leaves pinnate |
| 2 | Secondary veins almost as prominent as primary, at least on adaxial surface |
| 2' | Secondary veins not so prominent |
| 3 | Adaxial surface of leaflet midrib brown tomentose |
| 3' | Adaxial surface of leaflets glabrous |
| 4 | Peduncles pilose. Domatia frequently present |
| 4' | Peduncles glabrous. Domatia unrecorded |
