A taxonomic revision of the genus Ardisia Sw. in New Guinea, the Moluccas and the Aru Is. (but excluding the Bismarck Archipelago and the Solomon Is.), comprising 7 subgenera with a total of 31 species, of which 3 species are new to science. A key to the subgenera and keys to the species, full descriptions of all species, and an enumeration of the collections studied are given.