TURRITIS, TOWER-MUSTARD, in botany: A genus of plants belonging to the class of tetradynamia, and to the order of filiquosa; and in the natural system ranging under the 39th order, Siliquosa. The filiqua is very long and angulated; the calyx connivent and erect; the corolla is also erect. There are three species; two of which are natives of Great Britain, the glabra and hirsuta.