| 1 | Fruits globose, 3 cm diameter; pericarp 5-8 mm thick. — N Moluccas. |
| 1' | Fruist globose, less than 2.5 cm diameter, or (broadly) ellipsoid; pericarp 5 mm thick or less. |
| 2 | Fruits ellipsoid, 3.5 cm long; fruiting pedicel 2 by 2 mm. — N Moluccas, Bacan. |
| 2' | Fruits subglobose or broadly ellipsoid, 1.8-2.3(-2.5) cm long; fruiting pedicel 3-5 mm. |
| 3 | Fruits 2 cm long; pericarp (2-)3 mm thick. Lateral nerves on lower leaf surface not much raised but usually distinct; [midrib flat or raised above.] — W and E New Guinea main island (incl. Bird's Head and islands in the Geelvink Baai). |
| 3' | Fruits slightly larger (longer), 2.3(-2.5) cm long; pericarp (2-)3-5 mm thick. Lateral nerves on lower leaf surface faint. |
| 4 | Leaves glossy on drying at both surfaces; midrib raised above. Fruits brightly rusty pubescent. Older twigs blackish, strongly finely flaking. — Central southern New Guinea. |
| 4' | Leaves rather dull on drying; midrib ± flat or but slightly raised above. Fruits chocolate or dull brown pubescent. Older twigs grey-brown, striate or slightly cracked, but not flaky. — Louisiade Archipelago. |
