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Erodium
''Erodium'' is a genus of flowering plants in the botanical family Geraniaceae. The genus includes about 60 species, native to North Africa, Indomalaya, The Middle East and Australia. They are perennials, annuals or subshrubs, with five-petalled flowers in shades of white, pink and purple, that strongly resemble the better-known ''Geranium'' (cranesbill). American species are known as filarees or heron's bill, whereas Eurasian ones are usually called storksbills in English.
== Taxonomy ==
Carl Linnaeus grouped in the same genus (''Geranium'') the three similar genera ''Erodium'', ''Geranium'', and ''Pelargonium''. The distinction between them was made by Charles Louis L'Héritier de Brutelle based on the number of stamens or anthers: five for ''Erodium'', seven for ''Pelargonium'', and ten for ''Geranium''. However, the three genera have the same characteristics in regard to their fruit, which resemble long bird beaks. That characteristic is the basis for the names: ''Geranium'' evokes the crane (Greek ''geranos''), ''Pelargonium'' the stork (''pelargos''), and ''Erodium'' the heron (''erodios'').
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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