Calamus Acorus calamus americanus

Acorus Calamus (Sweet Flag) has been well-known as a medicinal plant since its early use by Native Americans, most notably the Cree Indians, who were widespread throughout North America. Traditionally the fresh root was chewed for its medicinal qualities which reportedly include, among others, stimulation and mental clarity, divination, relief of various stomach and digestive ailments, cough suppression, eye problems and diabetes.  In large doses, it can be used to induce vomiting.