Mexican oregano, is a close relative of lemon verbena. Mexican oregano is not botanically related to common oregano and has a more intense flavor. It's become better known in this country with the increasing popularity of Latin, Mexican and South American cuisines. Mexican oregano is typically only used in its dried form in American foods.
Mexican oregano has an intense, pungently grassy aroma while the taste is a bit citrusy with subtle hints of lime and licorice. Mexican oregano also hints of hay in its scent.