| 1 | Male perianth buds 2-3 mm wide. Fruits globose or short-ellipsoid, 0.9-1.3 cm long including pseudostalk 0-1 mm long |
| 1' | Male perianth buds 2.5-3 mm wide (always?). Fruits larger, short-ellipsoid, 1.4-2 cm long including pseudostalk 3 mm long |
| 2 | Leaves chartaceous, elliptic, 6-9 cm long. Pseudostalk of fruits 2-3 mm long. — Limestone area, Papua Barat, SW Bird's Head; 200-300 m |
| 2' | Leaves coriaceous or membranous, elliptic-oblong, 10-22(-26) cm long. Pseudostalk of fruits 0-3 mm long. — Papua New Guinea, possibly also Papua Barat (Bird's Head); 600-1000 m |
| 3 | Leaves membranous. Perianth (female) glabrous inside |
| 3' | Leaves coriaceous. Perianth (female) hairy inside |
