Densely tomentose shrubs. Leaves sessile or shortly petiolate, lanceolate to ovate, 2.5-8 cm long, tomentose on both surfaces; margin crenate, dentate or sinuate, entire in young leaves; petiole 0.5-1.5 cm long; apex acute; tomentum stellate, white, evanescent on the upper surface. Flowers sessile, purple, fragrant, in interrupted branched spikes. Calyx c. 4 mm long, urceolate, stellate tomentose; lobes 4, ovate. Corolla tube c. 8 mm long, stellate-pubescent; lobes orbicular, c. 3 mm long, pubescent on the outside and throat; margin undulate. Stamens 4; anthers sub-sessile, included, 1.5 mm long. Capsule 2-vavled, ellipsoid, 5-6 mm long, tomentose. Seeds many, 0.5 mm long, membranous round the edge.