Lasianthus Jack. has a wide distribution occurring from tropical Asia (about 120 species) trough Australia (one species) to tropical Africa (about 20 species) and tropical America (2 species) (Robbrecht, 1988). In Thailand it distribute only in primary forest such as mixed deciduous forest, dry evergreen forest, hill evergreen forest and moist evergreen forest. Most species in Thailand were recorded by Craib on Kerr’s collections.