A subvariety (Latin: subvarietas) in botanical nomenclature is a taxonomic rank. They are rarely used to classify organisms.
Subvariety is ranked:
Subvariety is an infraspecific taxon.[1]
Its name consists of three parts:
To indicate the subvariety rank, the abbreviation "subvar." is put before the infraspecific epithet.
4.1. If a greater number of ranks of taxa is desired, [...a]n organism may thus be assigned to taxa of the following ranks (in descending sequence): [... genus, ... species, subspecies,] variety (varietas), subvariety (subvarietas), form (forma), and subform (subforma). ... 4.3. Further ranks may also be intercalated or added, provided that confusion or error is not thereby introduced.