| 1 | Leaves unlobed, glabrous beneath. Fruit (narrowly) pyriform. — eastern Papua New Guinea |
| 1' | Leaves unlobed or shallowly 3-lobed or 3-angular, densely hairy or glabrescent beneath. Fruit globose or (narrowly) ellipsoid |
| 2 | Fruit (sub)globose or short-ellipsoid; exocarp woody, smooth. — West Papua, Sorong area |
| 2' | Fruit (narrowly) ellipsoid; exocarp wrinkled (not completely known in forma laeoica) |
| 3 | Male receptacle-tube 40-80 mm long. — Papua New Guinea, Eastern Highlands Province |
| 3' | Male receptacle-tube c. 35 mm long. — Western West Papua |
