Region: north-eastern Queensland, Australia.
Habitat: rainforests; soils derived from metamorphic or granitic geological parent materials, in complex mesophyll to simple notophyll vine forests; altitude 430 to 1480 m.
Ecology: rare, geographically isolated, vulnerable; seeds eaten by giant white-tailed rats.
BotanyTall rainforest trees; up to 40 metres tall.
Stem: one main trunk, up to 80 cm diameter; ash–grey bark; pale lenticels.
Leaves: mostly hairless, simple 45 to 145 long by 15 to 55 mm wide; opposite or in whorls of 3 to 8; with giant cuticular pores.
Inflorescence: in axillary or terminal clusters, of 6 to 10 flowers.
Flower: white or cream; 8 to 9 mm long; fragrant; blooming from September to May.
Pollination: by insect pollinated.
Fruits: globose or ovoid; green to yellowish or brown; 2 to 6 cm long, 2 to 6 cm wide.
Seeds: contained in a hard woody brown endocarp; several longitudinal ribs on its inside corresponding to longitudinal intrusions in the seed surface.