GastoniaCommerson ex Lamarck is a formerly accepted genus of 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.
Schefflera is a genus of flowering plants in the family Araliaceae with 13 species native to New Zealand and some Pacific islands.
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 It is very rare in the wild and some of its original habitat has been replaced by sugar cane plantations.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.
Arthrophyllum is a defunct genus of 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.
Reynoldsia is a formerly recognised genus of 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 the Pacific islands.
Astropanax is a genus of flowering plants in the family Araliaceae, native to Tropical Africa, Madagascar, and other Indian Ocean islands. It was resurrected from Schefflera in 2017.
Crepinella is a genus of flowering plants in the family Araliaceae, native to tropical South America. It was resurrected from Schefflera in 2019.
Tetraplasandra is a no longer recognised genus of plants in the ivy family, Araliaceae. They are small to medium trees, of mesic to wet forests.
Polyscias pulgarensis, synonym Arthrophyllum pulgarense, is a species of plant in the family Araliaceae. It is endemic to the Philippines.
Polyscias crassa is a species of plant in the family Araliaceae. It is endemic to Seychelles. It is threatened by habitat loss.
Polyscias lionnetii is a species of plant in the family Araliaceae. It is endemic to Seychelles.
Polyscias maraisiana is a species of plant in the family Araliaceae, formerly named Gastonia mauritiana.
Polyscias rodriguesiana is a rare species of plant in the family Araliaceae.
Polyscias marchionensis is a species of plant in the family Araliaceae. It is endemic to the Marquesas Islands of French Polynesia.
Polyscias sandwicensis, known as the 'ohe makai or ʻOhe kukuluāeʻo in Hawaiian, is a species of flowering plant in the family Araliaceae, that is endemic to Hawaii. It is a tree, reaching a height of 4.6–15 m (15–49 ft) high with a trunk diameter of 0.5–0.6 m (1.6–2.0 ft). It can be found at elevations of 30–800 m (98–2,625 ft) on most main islands. Polyscias sandwicensis generally inhabits lowland dry forests, but is occasionally seen in coastal mesic and mixed mesic forests. It is threatened by habitat loss.
Polyscias verrucosa is a species of plant in the family Araliaceae. It is endemic to the island of Tahiti in the Society Islands of French Polynesia. It is listed as a species of "Least Concern" on the IUCN Red List.
Polyscias gymnocarpa, commonly known as the Koolau Range 'ohe or Koʻolau tetraplasandra, is a species of flowering plant in the family Araliaceae, that is endemic to the Hawaiian island of Oʻahu. It is threatened by habitat loss.
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.
