There are dipterocarps in all five regions (attesting to a probable Gondwanic origin of the family), but they occur in lowland rainforests only in Asia and New Guinea, and they dominate the forest canopy only in Asia.
There are dipterocarps in allfive regions (attesting to a probable Gondwanic origin ofthe family), but they occur in lowland rainforests only inAsia and New Guinea, and they dominate the forestcanopy only in Asia.