Perennial with a pleasantly aromatic smell, green. Stems 30-60 cm, erect, quadrangular, leafy, usually branched above, glabrous. Leaves ovate-oblong to narrow lanceolate, 2-6 x 0.5-1.5 cm, serrate, broadly cuneate, acute to acuminate, glabrous, gland-dotted below; petiole ± absent to 2 mm. Verticillasters not in upper leaf axils, forming long slender elongated spikes, distant or approximating above. Bracts linear to linear-lanceolate, shorter than to as long as flowers. Calyx 1.5-2 mm, glabrous and gland-dotted, or with eglandular-ciliate hairs on teeth; teeth ± equal, narrow triangular. Corolla white or pale pink, c. 2.5 mm. Nutlets dark brown.