Robust, aromatic, herbaceous or shrubby perennials. Leaves not divided, with an indumentum of eglandular hairs, crenate to dentate, long petiolate. Inflorescence of numerous many-flowered shortly pedunculate verticillasters, the lowermost borne in the axils of the upper leaves. Calyx not bilabiate, ovoid-tubular, ± equally 5-toothed, 10-nerved; tube internally pilose. Corolla bilabiate; tube included in calyx, annulate; upper lip straight, narrow, entire; lower lip 3-lobed, spreading. Stamens 4, exserted, didynamous; filaments united; posterior stamens with unilocular thecae, anterior bilocular. Style ± equally bifid. Nutlets glossy, not or scarcely trigonous, apically rounded.