Tobacconist University
Nicotiana
The Genus of plants which contains approximately 60 species of which most are found in the Americas; 14 are found in North America 9 of which were used by Native Americans in a variety of ways. Of these there were 2 species used in ways that modern aficionados would most recognize; namely Nicotiana rustica and Nicotiana tabacum.

https://tobacconistuniversity.org