Tree, 15-45 m by 25-150 cm Ø, sometimes buttressed; bole 10-25 m. Twigs usually ± flattish, and sulphur-yellow, rather coarse. Leaves ovate-oblong, acutish attenuate to short-acuminate, en-tire, flat, usually chartaceous, c. 5-12 by 2¾-5 cm, at base broadly acute to rounded, the sulcate midrib above with a ridge; nerves 8-10 pairs, rather prominent on both sides as are the reticulations; petiole c. 5-10 mm. Stipules early caducous. ♂ Flowers in ± sessile triads; perianth c. 5 by 2½ mm, very truncate. ♀ Flowers solitary; cupule sessile, consisting of 2 free, tiny, suborbicular flaps without lamellae; in fruit c. 1-2 mm, cadu cous. Nut obovate-apiculate, when mature c. 9-10 by 6-7 mm.
Mountain forest, sometimes mossy, on slopes and spurs, 750-2450 m (mainly 1000-2000 m).Common on Mt Arfak (Genofa, etc.), dominant on Aifat R. (Arfak) at 1400 m, and near Trist (Morobe Distr.), on Mt Cycloop at Tamrau co-dominant with Castanopsis acuminatissima at 1350 m, on slopes of the Stars Mts dominant with Araucaria. Once reported on limestone at Chimbu (SIMONETT 69). Fr. April, June, Oct., Dec, flush Oct.-Dec
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