speciei

Speciei is the genitive singular form of the Latin noun species, meaning “of the species.” In scientific Latin and taxonomic writing, it is used to indicate possession, attribution, or association within a phrase. The noun species is a fifth-declension noun, and its genitive singular is speciei.

The form appears in phrases such as exemplar speciei, meaning “an exemplar of the species,” and habitat speciei, meaning “the habitat of the species.” It can also occur in other constructions where the relationship to a particular species is described in Latin, such as status speciei (“the status of the species”) or nomen speciei (“the name of the species”).

Usage context and note: speciei is primarily encountered in Latin-language passages, historical taxonomic literature, or in quoted phrases within otherwise non-Latin texts. In contemporary English-language taxonomy, the genitive relationship is usually expressed in English (for example, “the habitat of the species”) rather than by writing speciei, unless the author is quoting or preserving a Latin formulation. Understanding speciei requires basic knowledge of Latin grammar, particularly the fifth declension and its genitive ending.