An erect perennial up to 36 cm tall, branched. Stem and branches appressed hairy, with hairs up to 0.3 mm long, some arising from a tuberculate base. Leaves petiolate, green; petiole up to 7 mm long. Lamina 10-20 x 8-12 mm, ovate to oblong-ovate, ± obtuse, wavy, appressed hairy on both surfaces with short hairs, nerves on under surface prominent. Inflorescence usually terminal and forked, up to 4 cm long, few-flowered (up to 10) with flowers uniseriately arranged. Calyx 3.5-4 mm long, 5-partite, lobes lanceolate. Corolla tube slightly longer than calyx, retrorsely hairy to outside, glabrous within; lobes 1-1.5 mm long, obtuse, ± patent, margin undulate. Anthers 1.8-2 mm long, sessile, oblong, base broader, attached c. 1 mm from base of corolla tube. Stigma c. 0.9 mm long, conical, sparse hairy. Style 0.4-0.5 mm long, glabrous. Fruit not seen.