| 1 | Sepals 5. Stamens 2, rarely 3 (Subg. Dialium) |
| 1' | Sepals 3. Stamens 6 (Subg. Dansera) |
| 2 | Ovary inserted on flattish, patent-hairy receptacle |
| 2' | Ovary inserted on narrow or concave receptacle. |
| 3 | Leaflets (l-)3-5(-7). Fruits to 4 cm long, apex rounded or acutish |
| 3' | Leaves unifoliolate. Fruits (4-)4.5-5.5 cm long, apex beaked or ± acuminate.. |
