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also called race, a genetically distinct geographical subunit of a speciesspecies,
in biology, a category of classification, the original and still the basic unit in the demarcation of plant and animal types. The species marks the boundary between populations of organisms rather than between individuals.
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. See also classificationclassification,
in biology, the systematic categorization of organisms into a coherent scheme. The original purpose of biological classification, or systematics, was to organize the vast number of known plants and animals into categories that could be named, remembered, and
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a taxonomic category of animals and plants below a species. A subspecies is a group of geographically or, less frequently, ecologically or geochronologically isolated populations of a species, in which all or the majority of individuals differ in one or more morphological characters from individuals of other populations of the same species.

The name of a subspecies is formed by adding a third word, or epithet, to the species name. For example, the Middle Asian fox Vulpes vulpes flavescens is a subspecies of the red fox (Vulpes vulpes). In botany and, sometimes, zoology, subsp. or ssp. is written between the species name and the name of the subspecies.


A geographically defined grouping of local populations which differs taxonomically from similar subdivisions of species.
References in periodicals archive ?
Phylogenetic character mapping of proteomic diversity shows high correlation with subspecific phylogenetic diversity in Trypanosoma cruzi.
T# refers to a subspecific taxon rank at the global level.
The major problem to identify species/subspecies in this genus is that their morphs are mimetic, mainly of butterflies in the genus Melinaea Hubner (Nymphalidae: Danainae: Ithomiini) which are phenotypically variable, not only at the subspecific level but also within populations, thus "affecting" their mimics, such as this species of Duvoisvalia (Castniidae).
A molecular marker identifying subspecific populations of the soybean brown stem rot pathogen, Phialophora gregata Ecology and Population Biology, 90: 875-883.
Subspecific status of Argopecten irradians concentricus (Say, 1822) and of the bay scallops of Florida.
From this work, taking into account synonyms and nomenclatural changes but excluding the accepted subspecific taxa, one can derive another list of the sedges known and reported to occur in Illinois, including 17 genera and 225 species, 138 of which were species of Carex.
Hoffmann examined the specimens and made the subspecific determinations.
The so-called specific boundaries between the bovines have proven to be nothing more than subspecific, in most cases.