Monotypic taxon

Taxonomic group with only one subordinate taxon / From Wikipedia, the free encyclopedia

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In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon.[1] A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described.[2] In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa.