Teucrium

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 130

Sect. Teucrium (Sect. Teucris Bentham ). Shrubs or perennial herbs. Inflorescence not or rarely weakly secund. Calyx campanulate; tube straight, not gibbous at base; teeth equal or nearly so.