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''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'' (= ''Gastonia cutispongia'') * ''Polyscias duplicata'' (= ''Gastonia duplicata'') * ''Polyscias maraisiana'' (= ''Gastonia elegans'', ''Gastonia mauritiana'') * ''Polyscias lionnetii'' (= ''Gastonia lionnetii'') * ''Polyscias rodriguesiana'' (= ''Gastonia rodriguesiana'') * ''Polyscias sechellarum'' (= ''Gastonia sechellarum'') * * ''P. sechellarum'' var. ''contracta'' * * ''P. sechellarum'' var. ''curiosae'' * * ''P. sechellarum'' var. ''sechellarum'' * ''Polyscias serratifolia'' (= ''Gastonia serratifolia'') * ''Polyscias spectabilis'' (= ''Gastonia spectabilis'') 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gastonia (plant)」の詳細全文を読む スポンサード リンク
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