Shrub 0.6-1.2 m tall. Leaf blade obovate to rotund, 5-7 x 3.5-6 mm. Inflorescence medium-dense; verticils (2-)4-6-flowered. Calyx glandular-hispidulous; teeth lanceolate-subulate 2-2.5 mm long, the uppermost tooth usually slightly shorter and broader than the lower 4. Corolla lilac to pale pinkish mauve or occasionally white, 16-20 mm long, 5 mm wide at the mouth; lower lip 3 mm long. Stamens exserted by 5-6 mm.