Rousseaceae is a plant

Plant

Plants are living organisms belonging to the kingdom Plantae. Precise definitions of the kingdom vary, but as the term is used here, plants include familiar organisms such as trees, flowers, herbs, bushes, grasses, vines, ferns, mosses, and green algae. The group is also called green plants or...

 family in the order Asterales

Asterales

Asterales is an order of dicotyledonous flowering plants that includes the composite family and its related families.The order is a cosmopolite, and includes mostly herbaceous species, although a small number of trees and shrubs are also present.The Asterales can be characterized on the...

 containing trees and shrubs. The fruit is a berry or capsule. Leaves are simple, with toothed margins. Leaf stipules are not seen in this group.

The family contains three or four genera and twelve or thirteen species. From East Africa

East Africa

East Africa or Eastern Africa is the easterly region of the African continent, variably defined by geography or geopolitics. In the UN scheme of geographic regions, 19 territories constitute Eastern Africa:...

, New Guinea

New Guinea

New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

, New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

 and Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

. Molecular analysis suggested that Abrophyllum

Abrophyllum

Abrophyllum is a monotypic genus of flowering plants in the family Saxifragaceae sensu lato according to Engler, A. in Engler & Prantl and Schulze-Menz, G. K. in Melchior, 1964; placed in Subfamily Escallonioideae, Tribe Cuttsieae, it is closely related to Cuttsia...

, Cuttsia

Cuttsia

Cuttsia is a monotypic genus of shrubs or trees in the family Rousseaceae.The sole species is Cuttsia viburnea , which is native to rainforests in New South Wales and Queensland in Australia...

 and Carpodetus were related to Roussea, not in the family Escalloniaceae

Escalloniaceae

The Escalloniaceae is a family of flowering plants comprising about 130 species in seven genera. In the APG II system it is one of eight families in the euasterids II clade that are unplaced as to order...

.