  gastonia  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.porter p. lowry ii and gregory m. plunkett. 2010. "recircumscription of polyscias (araliaceae) to include six related genera, with a new infrageneric classification and a synopsis of species". plant diversity and evolution (formerly botanische jahrbucher) 128(1-2):55-84. . (see external links below). because the genus gastonia is now obsolete, its species are herein referred to by their names in polyscias. the species that constituted gastonia are mostly island endemics, with madagascar and new guinea being the largest land masses on which any of them naturally occur. gastonia had a disjunct distribution, with three species from the seychelles, three more from the mascarenes, one from madagascar and the comoro islands, and two distributed from malesia to the solomon islands. gastonia is a genus of small to large trees. it shares with related genera, the lack of an articulation on the pedicel, below the flower. it is distinguished from reynoldsia, munroidendron, and tetraplasandra by the radiating style arms that persist on the fruit.william r. philipson. 1970. "a redefinition of gastonia and related genera (araliaceae)". blumea 18(2):497-505. ==species== listed below are the nine species placed in gastonia by frodin and govaerts (2003). names in polyacias are from lowry and plunkett (2010). * polyscias crassa  (= gastonia crassa) * polyscias cutispongia {{au|( lamarck)
Araliaceae Historically_recognized_angiosperm_genera