Lippia graveolens, a species of flowering plant in the verbena or vervain family, Verbenaceae, is native to the southwestern United States (Texas and southern New Mexico), Mexico, and Central America as far south as Nicaragua.[1] Common names include: Mexican oregano, redbrush lippia, orégano cimarrón ('wild oregano'), scented lippia,[3] and scented matgrass.[4] The specific epithet is derived from two Latin words: gravis, meaning 'heavy', and olens, meaning 'smelling'.[5] It is a shrub or small tree, reaching 1–2.7 m (3.3–8.9 ft) in height.[2] Fragrant white or yellowish flowers can be found on the plant throughout the year, especially after rains.[3]
Hedeoma patens, Spanish common name orégano chiquito ('small oregano'); native to the Mexican states of Chihuahua and Coahuila.
Coleus amboinicus, known as Cuban oregano, orégano poleo ('pennyroyal oregano'), orégano francés ('French oregano'), Mexican mint, Mexican thyme, and many other names. Common throughout the tropics, including Latin America, but probably of eastern-hemisphere origin.