Tobacco (bot. Nicotiana tabacum) is a perennial herbaceous plant. It is found only in cultivation. Its leaves are commercially grown in many countries to be processed into tobacco. It grows to heights between 1 to 2 metres. Research is ongoing into its ancestry among wild Nicotiana species, but it is believed to be a hybrid of Nicotiana sylvestris, Nicotiana tomentosiformis, and maybe Nicotiana otophora. Ethnobotany: Tobacco was widely used in northern North America. The domesticated Nicotiana rustica was cultivated in the East in prehistoric times and in the Southwest in the early historical period. In other regions tobacco from several native species was gathered from the wild
Dried and cured Tobacco leaves are smoked in the form of a cigar or cigarette, or in a smoking pipe. Tobacco is also chewed, and consumed as snuff. The word "tobacco" is an Anglicization of the Spanish word "tabaco", whose roots are unclear; it is thought to derive from a Native American word for the pipe in which tobacco was smoked.