Dried spearmint (Mentha x spicata). This aromatic mint is widely used in herbal medicine. The x is used to show that this is a hybrid form of spearmint, a form that has been cross-bred from two different species. The oil from the plant is used as an antiseptic and anti-inflammatory agent. Another use is to increase the use of fat by the body as an energy source. It is also used in aromatherapy.