name: Bacillus subtilis subsp. spizizenii.

Nominotypical subspecies and subspecies autonyms

In zoological nomenclature, when a species is split into subspecies, the originally described population is retained as the "nominotypical subspecies", "nominate subspecies" or "definitive subspecies", which repeats the same name as the species. For example, Motacilla alba alba (often abbreviated M. a. alba) is the nominotypical subspecies of the

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