Herbal tea

Herbal teas—less commonly called tisanes (UK and US , US also )—are beverages made from the infusion or decoction of herbs, spices, or other plant material in hot water. 
The term "herbal tea" is often used to show the difference between true teas (e.g., black, green, white, yellow, oolong) which are made from "Camellia sinensis".