Small shrub, sometimes very low and mat-forming, but often straggling and stems to c. 30 cm high. Shoots puberulent. Lvs usually in whorls of 3, sometimes opposite, 3-6 mm long, revolute with contiguous margins concealing lower surface, glabrous except sometimes for ciliolate apparent margin. Petioles very short. Fls in terminal racemes, sometimes appearing umbellate. Pedicels c. 3 mm long, densely puberulent. Bracteoles resembling sepals and closely overlapping them. Sepals 2-3 mm long, ovate or lanceolate-ovate, glabrous except for ciliate margin, similar in colour to corolla; apex acute. Corolla c. 6 mm long, urceolate, purple, rose, pink or occasionally white, glabrous; lobes < 1 mm long, triangular-ovate, becoming patent. Stamens included; anthers c. 1 mm long, deep purplish, with ± crested appendages. Style = or slightly exserted from corolla tube; stigma capitate. Capsule c. 1.5 mm long, ± globose, glabrous.