Region: tropical Asia, Malesia, New Guinea; Australasia, Queensland.
BotanyTall trees, young branches ± tetragenous usually glabrous.
Leaves: dentate or almost entire.
Inflorescence: axillary, of dichasia or few-flowered pleiochasia, bracteoles broad enclosing the flowerbud, early caducous.
Flowers: bisexual, perianth and androecium on the rim of the hypanthium.
Fruit: hypanthium cylindrical-ellipsoid, dehiscing into 4 or 2 equal valves.