Neoguillauminia is a genus of plants in the family Euphorbiaceae first described as a genus in 1938. It contains only one known species, Neoguillauminia cleopatra, endemic to New Caledonia. Its closest relative is Calycopeplus from Australia.
Cupaniopsis is a genus of about 67 species of trees and shrubs of the soapberry family, Sapindaceae. They grow naturally in New Guinea, New Caledonia, Australia, Torres Strait Islands, Fiji, Samoa, Sulawesi, Micronesia. Many species have been threatened with extinction globally or nationally, with official recognition by the International Union for Conservation of Nature (IUCN) and several national and state governments.
Guioa is a genus of about 78 rainforest tree species known to science, which constitute part of the plant family Sapindaceae. They have a wide distribution, ranging from throughout Malesia, in Burma, Cambodia, Vietnam, Thailand, Malay Peninsula, Borneo, Sumatra, Philippines, Java, Flores, Timor, Sulawesi, Moluccas, New Guinea, further southwards through the east coast of Queensland and New South Wales, Australia and further eastwards to the Pacific Islands, including Tonga, New Caledonia, Fiji and Samoa.
Arillastrum is a monotypic genus of trees in the myrtle family, Myrtaceae, containing the single species Arillastrum gummiferum. It is endemic to southern New Caledonia. It is related to Eucalyptus, but more closely to Angophora and Corymbia.
Elattostachys is a genus of about 21 species of trees known to science, constituting part of the plant family Sapindaceae.
Araucaria luxurians is a species of conifer in the family Araucariaceae. It is known by the common names Sapin de Noël and Coast araucaria. It is endemic to New Caledonia, where it grows in several small subpopulations. It grows in ultramafic soils in humid forests and on cliffs and slopes. It is threatened by habitat loss and none of the subpopulations are in protected areas.
Saribus jeanneneyi is a very rare species of palm tree in the genus Saribus. It is endemic to southern New Caledonia, where only one mature specimen, surrounded by a few seedlings, survived in its native habitat as of 1997. The cause of its rarity in the wild is because its meristem is edible.
Boronia koniambiensis is a species of plant in the citrus family Rutaceae and is endemic to New Caledonia. It was first formally described in 1932 by Albert Ulrich Däniker then transferred to the genus Boronella in 1995 by Thomas Gordon Hartley as Boronella koniambiensis. In 2015, all the species in Boronella were transferred to Boronia on the basis of molecular phylogenetic analysis.
Ochrosia sevenetii, synonym Neisosperma sevenetii, is a species of flowering plant in the family Apocynaceae. It is endemic to New Caledonia, where it is known from only two sites. Its habitat is threatened with encroachment and fire.
Pycnandra blanchonii is a species of plant in the family Sapotaceae. It is endemic to New Caledonia.
Citrus oxanthera, synonym Oxanthera aurantium, is a species of plant in the family Rutaceae. Sometimes referred to commonly as the orange-flowered oxanthera, it is endemic to New Caledonia.
Oxanthera brevipes is a species of plant in the family Rutaceae. It is endemic to New Caledonia. It was proposed as a novel species by Benjamin C. Stone based on two specimens, distinguished from other false oranges by a non-articulated petiole. The genus Oxanthera has been synonymized with Citrus, but a name in Citrus does not appear to have been published, and Plants of the World Online regards "Oxanthera brevipes" as an unplaced name.
Citrus neocaledonica, synonym Oxanthera neocaledonica, the large leaf oxanthera, is a species of plant in the family Rutaceae. It is endemic to New Caledonia.
Citrus undulata, synonym Oxanthera undulata, the wavy-leaf oxanthera, is a species of plant in the family Rutaceae. It is endemic to New Caledonia.
Planchonella pinifolia is a species of plant in the family Sapotaceae. It is endemic to New Caledonia.
Polyscias scopoliae is a species of plant in the family Araliaceae. It is endemic to New Caledonia.
Plerandra veitchii is a species of plant in the family Araliaceae. It is endemic to New Caledonia. It is threatened by habitat loss.
Virotia is a genus of six species of flowering plants in the family Proteaceae. The genus is endemic to New Caledonia with six species that were once placed in Macadamia. Its closest relatives are the Australian Athertonia and the Asian Heliciopsis. The genus is named after Robert Virot, pioneer of ecological studies in New Caledonia and author of a monograph of New Caledonian Proteaceae.
Sleumerodendron is a monotypic genus of plant in the family Proteaceae. The sole species is Sleumerodendron austrocaledonicum.
Pittosporum mackeei is a species of plant in the Pittosporaceae family. It is endemic to New Caledonia.
