Generally a large tree, 24-45 m by 25-100 cm Ø, sometimes dwarfed to a shrub, 2-6 m, or small tree (Arfak). Leaves elliptic-oblong or ovate to ovate-oblong, coriaceous, not rarely hard, the margin often recurved, apex sometimes acutish, (2½-)3½-9 by 1½-4 cm (I = 1½-2½); ridge on midrib at least halfway sometimes to apex; nerves 7-9 pairs, above sometimes depressed, sometimes elevated, venation indistinct; petiole 4-7 mm. Stipules 5-10 by 2½-3 mm. ♂ Flowers: triads sessile or almost so; perianth ± tubular, 7-9 mm. Stamens c. 15; anthers 5-7 mm. ♀ Flowers 3; cupule c. 4-5 mm Ø; 1-2 laterals sometimes abortive or sterile; style 1-2½ mm. Cupule on a 5-15 mm long curved or straight peduncle, with 4-5 lamellae, thick, c. 10-15 by 12-15 mm, sometimes smaller, 7-10 by 5-9 mm (always mature?). Nut 6-10 by 4-6 mm, sometimes only 4-5 mm and orbicular.
Mountain forests, sometimes frequent, very common or dominant, 1550-2700 m.At Arfak Mts and Wissel Lakes frequent or very common, sometimes in old secondary forest, at Habbema dominant tree 40 by 1 m at 2300 m, at Chimbu growing together with N. perryi. ♂ Fl. Oct.-Nov., April, fr. Jan.-Febr., Sept.-Nov., flush Sept. (once), Febr. (once).
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