The taxonomic genus of plants commonly called Tobacco. It has 67 species.

Superkingdom Eukaryota
Kingdom Plantae
Division Magnoliophyta (formerly Phylum Tracheophyta)
Class Magnoliopsida (formerly Class Angiospermae)
Subclass Asteridae (formerly Subclass Dicotyledonae)
Order Solanales
Family Solanaceae
Subfamily Cestroideae
Tribe Nicotineae
Genus Nicotiana

Sources appear at the end of the Solanaceae writeup.

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