Coarse, strongly aromatic annual. Stems erect, 60-120 cm, sturdy, quadrangular, villous with long spreading multicellular eglandular hairs. Leaves broadly ovate, 8-10 x 5-8 cm, acute, crenate to serrulate, pilose on both sur-faces, gland-dotted beneath, rounded to broadly cuneate at base; petiole 2-5 cm, often densely villous. Racemes dense, erect, often borne in axils of upper leaves. Bracts c. 4 mm, longitudinally folded. Pedicels sturdy, c. 0.5 mm. Calyx in flower c. 3.5 mm, gland-dotted and with villous hairs, enlarging in fruit to 9-10 mm, ± horizontally spreading, with a slightly recurved shortly 3-toothed upper lobe and lower lobe with 2 lanceolate acuminate teeth, villous at throat within. Corolla c. 4 mm, white; tube c. 1.8 mm wide and long, villous at throat. Nutlets pale brown c. 1.8 x 1.8 mm, globose, with raised markings, not mucilaginous on wetting.