Small suffruticose herb. Stems branched, erect. 30-40 cm high, rather slender, rounded-quadrangular, with short crisped eglandular retrorse hairs. Leaves oblong-ovate, thin-textured, 15-25 x 10-15 mm, often with small dusters of younger leaves in axils, gland-dotted above and below, with a sparse indumentum of very short eglandular hairs, cuneate, subentire to irregularly crenulate; petiole up to 3 mm. Flowers in cymose shortly pedunculate verticillasters forming a loose elongated spike; verticillasters up to 10-12-flowered. Pedicels erect-spreading, 3-7 mm. Calyx pale brown-green, narrow tubular, 7-8 mm long and c. 1.5 mm wide, finely ribbed with a very short eglandular indumentum; teeth equal, very narrow triangular, 2 mm, acuminate, pilose; tube somewhat vinous within throat. Corolla white c. 15 mm; tube c. 1 mm wide, exserted beyond calyx teeth. Stamens included under upper lip of carolla; thecae glabrous ± parallel. Nutlets c. 1.2 x 0.6 mm, brown, with a prominent V-shaped white attachment scar, scarcely trigonous, apically rounded.