Herb up to 1.2 m. Stems rather slender, much branched, quadrangular, with eglandular white retrorse hairs. Leaves broadly ovate, c. 3 x 2 cm, coarsely crenate to serrate, cuneate, acute, with short eglandular hairs, densely gland-dotted on abaxial surface. Petiole up to 3 cm. Inflorescence of erect lateral and terminal slender spikes, up to 5 x 0.4 cm, forming panicles; verticillasters contiguous or separate; indumentum as on stem. Bracts linear subulate, 1-2 mm. Calyx. c. 1 mm in flower, urceolate; teeth narrow triangular. Corolla white, 1.5-2 mm. Anthers included. Nutlets oblong.