Tree, 5-45 m tall, 5-130 cm diam. Adult foliage leaves like var. patulus but distinctly more robust, 1.2-1.8 by 0.6-0.8 mm. Involucral leaves to 3 mm long and spreading or in some areas to 5 mm and more or less clasping the receptacle.
Scattered and, in New Guinea, very common in primary and secondary rain-forest, canopy tree, or sometimes emergent, often co-dominant, in mossy forest associated with Nothofagus and Phyllo-cladus, also in Lithocarpus-Castanopsis mixed forest co-dominant, (500-)700-3000 m, a specimen from Borneo reported from 240 m.