Annual or shrubby aromatic herbs. Stems erect, simple or much branched, with simple or occasionally branched eglandular hairs. Leaves not divided, crenulate to senate, gland-dotted, petiolate at least below. Inflorescence of lateral and terminal condensed oblong to cylindrical spikes; verticillasters 2-several-flowered. Bracts clearly different from leaves, linear to ± orbicular, imbricate or not. Bracteoles present or absent. Flowers very small, sometimes secund. Calyx not or scarcely bilabiate, narrow-tubular to ovoid, enlarged and inflated in fruit or not; tube glabrous within or with villous hairs at throat, teeth subequal. Corolla bilabiate; upper lip emarginate; lower lip with 3 subequal lobes; tube with or without an internal oblique ring of hairs. Stamens 4 didynamous, included or exserted; thecae bilocular becoming confluent and unilocular. Style ± equally bifid at apex. Nutlets smooth to finely tuberculate, ovoid or oblong, sometimes only 1 developing.