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In botany, an infraspecific name is the scientific name for any taxon below the rank of species, i.e. an infraspecific taxon. (A "taxon", plural "taxa", is a group of organisms to be given a particular name; "infraspecific" means "any rank below the level of species".) The scientific names of plants (and some other groups) are regulated by the ''International Code of Nomenclature for algae, fungi, and plants'' (''ICN'', formerly the ''International Code of Botanical Nomenclature'', ''ICBN''). This specifies a 'three part name' for infraspecific taxa, plus a 'connecting term' to indicate the rank of the name.〔, Art. 24〕 An example of such a name is ''Astrophytum myriostigma'' subvar. ''glabrum'', the name of a subvariety of the species ''Astrophytum myriostigma'' (bishop's hat cactus). Names below the rank of species of cultivated varieties of plants and of animals are regulated by different codes of nomenclature and are formed somewhat differently. ==Construction of infraspecific names== Article 24 of the ''International Code of Nomenclature for algae, fungi, and plants'' (''ICN'') describes how infraspecific names are constructed.〔, Art. 24〕 The order of the three parts of an infraspecific name is: :genus name, specific epithet, connecting term indicating the rank (not part of the name, but required), infraspecific epithet. It is customary to italicize all three parts of such a name, but not the connecting term.〔See the examples in , Art. 24〕 For example: * ''Acanthocalycium klimpelianum'' var. ''macranthum'' :genus name = ''Acanthocalycium'', specific epithet = ''klimpelianum'', connecting term = var. (short for "varietas" or variety), infraspecific epithet = ''macranthum'' *''Astrophytum myriostigma'' subvar. ''glabrum'' :genus name = ''Astrophytum'', specific epithet = ''myriostigma'', connecting term = subvar. (short for "subvarietas" or subvariety), infraspecific epithet = ''glabrum'' The ranks below species explicitly allowed in the ''ICN'' are:〔, Art. 4; abbreviations from Recommendation 5A〕 * subspecies - recommended abbreviation: subsp. (but "ssp." is also in use although not recognised by Art 26) * varietas (variety) - recommended abbreviation: var. * subvarietas (subvariety) - recommended abbreviation: subvar. * forma (form) - recommended abbreviation: f. * subforma (subform) - recommended abbreviation: subf. 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「Infraspecific name」の詳細全文を読む スポンサード リンク
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