GastoniaCommerson ex Lamarck is a formerly accepted genus of flowering plants in the ivy and ginseng family, Araliaceae. It had been known as an unnatural group, but was recognized as late as 2010, when its nine species were distributed to four different subgenera of the large genus Polyscias. Because the genus Gastonia is now obsolete, its species are herein referred to by their names in Polyscias.
Cocconerion is a genus of plants under the family Euphorbiaceae first described as a genus in 1873. The entire genus is endemic to New Caledonia and is related to Baloghia.
- Cocconerion balansaeBaill. - SE New Caledonia
- Cocconerion minusBaill. - New Caledonia, Loyalty Islands
Niemeyera is a genus of plants in the family Sapotaceae described as a genus in 1870. The entire genus is endemic to Australia. Its closest relative is Pycnandra from New Caledonia.
- Niemeyera chartacea(F.M.Bailey) C.T.White - Queensland
- Niemeyera prunifera(F.Muell.) F.Muell. - Queensland
- Niemeyera whitei(Aubrév.) Jessup - Queensland, New South Wales
Schefflera is a genus of flowering plants in the family Araliaceae. With an estimated 600–900 species, the genus represents about half of its family. The plants are trees, shrubs or lianas, growing 4–20 metres (13–66 ft) tall, with woody stems, the absence of articulated pedicels and armaments, and palmately compound leaves.
Melanophylla is a genus of flowering plants endemic to Madagascar. The genus contains seven species of small trees and shrubs.
Polyscias racemosa, or false 'ohe, is a species of flowering plant in the family Araliaceae. As Munroidendron racemosum, the species was until recently considered to be the only species in the monotypic genus Munroidendron. With the change in classification, Munroidendron is now obsolete. Polyscias racemosa is endemic to the Hawaiian island of Kauai. It is very rare in the wild and some of its original habitat has been replaced by sugar cane plantations. It was thought for some time to be probably extinct, but was rediscovered a few years prior to 1967.
Meryta is a genus in the flowering plant family Araliaceae. There are 28 described species in the genus and a number of undescribed species, all small, resinous trees of the subtropical and tropical Pacific Ocean, characterized by huge, simple leaves and a dioecious sexual system, a unique combination in Araliaceae. Meryta has its center of diversity in New Caledonia. Phylogenetic analyses have placed Meryta as a monophyletic genus in one of the three major clades of the Araliaciae, the Polyscias-Pseudopanax group, and more specifically in the Pacific Schefflera subclade.
Arthrophyllum is a defunct genus of flowering plants in the family Araliaceae. It was recognized by most authors until 2010, when all of its 30 species were "sunk" into ''Polyscias'' subgenus Arthrophyllum.
Cuphocarpus is an obsolete genus of flowering plants in the family Araliaceae. Mabberley (2008) treated it as a synonym of Polyscias, but other authors still recognized it at that time. In 2010, in a phylogenetic analysis of DNA sequences, it was shown that Cuphocarpus was biphyletic and embedded in the large genus Polyscias. In an accompanying paper, Polyscias was divided into 11 subgenera, with seven species left incertae sedis.
Polyscias is a genus of flowering plants in the family Araliaceae. They bear pinnately compound leaves.
Raukaua is a genus of flowering plants in the family Araliaceae. It has an austral distribution, being indigenous to southern Argentina and Chile, as well as New Zealand and the island of Tasmania.
Reynoldsia is an obsolete genus of flowering plants in the ivy family, Araliaceae. In 2003, Kew Gardens published a checklist for Araliaceae, in which eight species were recognized for Reynoldsia: four from Samoa, two from Tahiti, one from the Marquesas, and one from Hawaii. In 2010, a phylogenetic comparison of DNA data showed that Reynoldsia was polyphyletic, consisting of two groups that are not each other's closest relatives. In a companion paper, three of the species were "sunk" into synonymy with others, reducing the number of species to five. All species that were formerly in Reynoldsia are now in ''Polyscias'' subgenus Tetraplasandra, a subgenus of 21 species indigenous to Malesia and Pacific islands.
Plerandra is a genus of flowering plants in the family Araliaceae that has long been considered a synonym of Schefflera, which has been a polyphyletic group.
Tetraplasandra is an obsolete genus of flowering plants in the ivy family, Araliaceae. They are small to medium trees, of mesic to wet forests.
Beauprea is a genus of flowering plants in the family Proteaceae. Its 13 extant species are endemic to New Caledonia, though closely related forms have been found in the fossil records of Australia and New Zealand. Its closest extant relatives are the African Protea and Faurea.
Myodocarpus is a genus of plants in the family Myodocarpaceae. It is endemic to New Caledonia. The only other genus of the family is Delarbrea.
Delarbrea is a genus of plants in family Myodocarpaceae, which contains only one other genus, Myodocarpus.
Oncotheca is a genus of tree endemic to New Caledonia. There are two species, Oncotheca balansae and Oncotheca humboldtiana.
Polyscias oahuensis is a species of tree in the ivy family known by the common name 'ohe mauka. It is endemic to Hawaii, where it occurs on all the major islands except for Niihau and Kahoolawe.
