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Chione venosa
''Chione'' is a monotypic genus of flowering plants in the family Rubiaceae containing the single species ''Chione venosa''. It is native to the neotropics, occurring in most of Mexico, and throughout Central America, the Caribbean, Colombia, Ecuador, and Peru. It is typically a tree growing 10 to 20 meters tall. In harsh habitats, it may be dwarfed and shrubby. It has no known economic use.
==Systematics==
The genus ''Chione'' was erected by de Candolle in his ''Prodromus'' in 1830.〔Augustin Pyramus de Candolle. 1830. ''Prodromus Systematis Naturalis Regni Vegetabilis''. 4: 461.〕〔''Chione'' In: International Plant Names Index〕 The name of the genus is derived from the Greek word ''chion'', meaning snow. The biological type for the genus are those plants which de Candolle called ''Chione glabra''.〔''Chione'' In: Index Nominum Genericorum. In: Regnum Vegetabile〕 These are now included in ''Chione venosa'' var. ''venosa'' but per ICN, ''Chione glabra'' retains its status as type.〔
Some authors have assigned as many as 15 species to ''Chione'', but usually only one species is recognized, ''Chione venosa''.〔(【引用サイトリンク】title=''Chione'' in the World Checklist of Rubiaceae )〕 In 2003, two species were removed from ''Chione'' and placed in a new genus, ''Colleteria''. The remaining species of ''Chione'' were combined into one species, ''Chione venosa'', with four varieties.〔 ''Chione'' and ''Colleteria'' are the only genera in the subfamily Cinchonoideae that have not been assigned to a tribe. They will be placed in a tribe, possibly a new one, after further morphological study.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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