Perennial, densely hairy, yellowish-green, low herb. Leaves petiolate, ovate to lanceolate, up to 3.5 x 1 cm, prominently veined on the ventral face, the veins sunken on the dorsal face, undulate, acute. Inflorescence of short, spicate, scorpioid cymes; the spikes usually about 2.5 cm long, dense. Flowers yellow. Calyx 5-lobed, densely hairy. Corolla up to 7 mm long, densely hairy outside; tube 5-ribbed, wider near the top, with 5 undulate lobes. Anthers inserted nearer the base of corolla-tube. Stigma almost sessile on the ovary, flattened-conical. Nutlets four, glabrous, tubercled, as long as or shorter than the calyx lobes.