Stevia rebaudiana has been used for more than 1500 years by the Guaraní people of Brazil and Paraguay, who called it ka’a he’ê (“sweet herb”), to sweeten the local yerba mate tea, as medicine, and as a “sweet treat”.
Stevia is 150 species of herbs from the sunflower family (Astereacea). It was officially discovered in the 19th century by Dr.Moises Santiago Bertoni. He named it Stevia Rebaudiana Bertoni in honor of Paraguay chemist. It is a plant originating in the tropics and sub-tropics of South America and Central America. Stevia is widely used as a sweetener is the stevia of the Rebaudiana species. It is also known as sweetleaf, sugarleaf or sweet herb.