Nicotiana tabacum is a species of flowering plant in the nightshade family, known primarily for its leaves, which are harvested and processed to produce tobacco products. This plant is native to the Americas and has been cultivated for centuries for its psychoactive properties due to the presence of nicotine, a stimulant. The leaves of Nicotiana tabacum are typically dried and cured before being used in cigarettes, cigars, and other tobacco products. In addition to its economic significance, the plant has also been studied for its potential medicinal properties and its role in agriculture as a model organism for genetic research.