The Verbenaceae, commonly known as the verbena or vervain family, contains around 90 genera and between 2000 and 2600 species. The family includes trees, shrubs and herbs, and is pantropical with a few temperate species. It is closely related to the Lamiaceae or mint family and like them often has square-shaped stems and aromatic foliage. The leaves are mostly simple and opposite or whorled. The family takes its name from the genus Verbena, a Latin name for a plant sacred to the Romans. Typically species have 5 connate sepals and petals and the fruit is usually a drupe or occasionally nutlets. Lemon verbena has been grown for flavoring, teak is a valuable lumber, and verbena itself has had medicinal uses. There are many species that are beautiful ornamentals, while others are weedy. Some genera have been transferred to the Lamiaceae, and others to families of their own.