Calophyllum

Calophyllum is a genus of tropical flowering plants in the family Calophyllaceae. They are mainly distributed in Asia, with some species in Africa, the Americas, Australasia, and the Pacific Islands.

Source. Wikipedia.

Members of the genus Calophyllum native to Malesia and Wallacea are of particular importance to traditional shipbuilding of the larger Austronesian outrigger ships and were carried with them in the Austronesian expansion as they migrated to Oceania and Madagascar. They were comparable in importance to how oaks were in European shipbuilding and timber industries. The most notable species is the mast wood (Calophyllum inophyllum) which grows readily in the sandy and rocky beaches of the island environments that the Austronesians colonized. Calophyllum inophyllum is a large evergreen plant, commonly called tamanu, oil-nut, mast wood, beach calophyllum or beauty leaf. Mast wood is notable for its ability to grow to massive sizes in sandy or rocky beaches of island and coastal habitats, as well as its habit of sending out arching large trunks over the water where its seeds are dispersed via the currents.

Source. Wikipedia.