1Twigs with faint swellings or without; ridges faint or fairly distinct. Leaves and flowers coriaceous. — Papua New Guinea (Western Highlands Prov.: Mt Hagen and vicinity; c. 2000 m).
1'Twigs with ant-swellings, generally with an opening.
2Male buds not particularly narrow, 8-14 by (3-)4-5 mm; bracteole generally caducous; androphore about half as long as the synandrium; anthers 7-12. — Lowland to 2000 m altitude.
2'Male buds slender, tubiform, 12-15 by (2-)2.5-3.5 mm; bracteole persistent or caducous; androecium slender, androphore (much) longer than half the length of the synandrium; anthers 4-6. [Fruits not known, possibly 1.5-2 cm long.] — Lowland and lower montane areas.
3Fruits 2.5-3 cm long. [Flowers not known with certainty, possibly similar to type variety.] — Montane areas.
3'Fruits 1.5-2(-2.5) cm long. — Lowland and montane areas.
4Male inflorescences sessile.
4'Male inflorescences 5-20 mm long pedunculate.