Tobacco is from the leaves of the Nicotiana plant.
The leaves of the Tobacco plant (Nicotiana tabacum) are used to produce tobacco.
It is Tree Tobacco (Nicotiana Glauca)
Nicotiana is the genus name for the plant Nicotiana, it belongs to the family Solonaceae
There are currently 60 species of tobacco. There are two major species and they are Nicotiana tobacum and Nicotiana rustica.
The scientific or taxonomic name would be Nicotiana tabacum.
The scientific or taxonomic name would be Nicotiana glauca.
You mean what is nicotine found in? It occurs naturally in the tobacco plant as one of nature's pesticides (similarly to caffeine in tea and coffee, it is poisonous to insects). http://en.wikipedia.org/wiki/Nicotiana