Erect, rounded, often intricately branched shrub to 3 m, closely and densely tomentose throughout with non-glandular, dendritic hairs and smaller glandular hairs, greyish, the new growth bronze-green. Leaves obovate to narrowly obovate-elliptic, mostly 20–35 mm long, 5–15 mm wide, juvenile leaves larger; petiole to 10 mm long, sometimes very short. Flowers axillary or terminal, in loose, 4–6–flowered clusters; pedicels absent or to 5 mm long. Calyx 4.5–9 mm long; lobes 2–4 mm long. Corolla 5.5–8.5 mm long; tube pale greenish with deep violet (rarely drab grey-green) striations; lobes 2.5–4 mm long, violet, rarely drab white, the margins sometimes white. Stamens included. Capsule more or less globose, 3–4 mm diam. Seeds c. 3 mm long.