In botanical nomenclature, variety(abbreviated var.; in Latin: varietas) is a taxonomic rank below that of species and subspecies but above that of form. As such, it gets a three-part infraspecific name.
the terms 'variety' and 'species' differ
A species is a group of organisms that share key traits and can produce offspring of its own type. Particularly in the plant kingdom, species can have many different types of varieties, which are naturally occurring variations. These variations are not so radical that the plant doesn’t fall into the species definition, however. For example, the redbud’s scientific name is Cercis canadensis. A white-flowered variety is called Cercis canadensis var. alba. Most, if not all, of the seeds from this variety would also produce white flowers.