<P> Because animals are typically only grouped within subspecies, it is simply written as a trinomen with a third name . For example, because dogs are still so similar to wolves as to form part of their species but so distinct as to require separate treatment, they are described as C. lupus familiaris (Lat . "domestic"), while the "wolves" form many distinct subspecies, including the common wolf (C. lupus lupus) and the dingo (C. lupus dingo). Dog breeds, meanwhile, are not scientifically distinguished . </P> <P> There are several divisions of plant species and therefore their infraspecific names generally include contractions explaining the relation . For example, the genus Hibiscus (Lat . "marshmallow") includes hundreds of other species apart from the Rose of Sharon or common garden hibiscus (H. syriacus, from Lat . "Syrian"). Rose of Sharon doesn't have subspecies but has cultivars that carry desired traits, such as the bright red H. syriaca' Diana' . "Hawaiian hibiscus", meanwhile, includes several separate species . Since not all botanists agree on the divisions or names between species, it is common to specify the source of the name using author abbreviations . For example, H. arnottianus A. Gray was first specified in a work by Asa Gray . Sister Roe identified an immaculate white hibiscus on Molokai as a separate species, but D.M. Bates later reclassified it as a subspecies of H. arnottianus . It thus now appears as H. arnottianus ssp . immaculatus or as H. arnottianus A. Gray subsp . immaculatus (M.J. Roe) D.M. Bates . When it is considered a mere variety of H. arnottianus, it is written H. arnottianus var . immaculatus . </P> <P> Each genus should have a designated type, although in practice there is a backlog of older names without one . In zoology, this is the type species and the generic name is permanently associated with the type specimen of its type species . Should the specimen turn out to be assignable to another genus, the generic name linked to it becomes a junior synonym and the remaining taxa in the former genus need to be reassessed . </P> <P> Within the same kingdom one generic name can apply to only one genus . However, many names have been assigned (usually unintentionally) to two or more different genera . For example, the platypus belongs to the genus Ornithorhynchus although George Shaw named it Platypus in 1799 (these two names are thus synonyms). However, the name Platypus had already been given to a group of ambrosia beetles by Johann Friedrich Wilhelm Herbst in 1793 . A name that means two different things is a homonym . Since beetles and platypuses are both members of the kingdom Animalia, the name could not be used for both . Johann Friedrich Blumenbach published the replacement name Ornithorhynchus in 1800 . </P>

A genus is a group of related species