A subdivision of a genus, comprising one or more species which differ from other species of the genus in some important character or characters; as, the azaleas now constitute a subgenus of Rhododendron.

(biology) taxonomic group between a genus and a species

The first taxonomic division below a genus.

a natural group between genus and section used in the classification of plants

An intermediate category in taxonomy between genus and species.

The principal subdivision of a genus.

In biology, a subgenus is a taxon at a rank directly below genus. See rank (botany) and rank (zoology).