Shrubs 30-50 cm high, the larger ones quite bushy, strongly aromatic (basil-scented). Inflorescence main axis and upper side of calyx purplish. Corolla c. 9 mm long to apex of straight lower lip, white or very pale pink at late anthesis; upper lip c. 4 mm long, wide, with 4 rounded lobes. Filaments white. Style mauve. A number of adventive plants.