Shrub to 1.2 m. Branches usually sparsely tomentose with non-glandular hairs. Leaves narrowly elliptic, oblong or obovate, sessile or almost so, 5–25 mm long, 1.5–4.5 mm wide, sparsely tomentose; juvenile leaves larger, slightly fleshy. Inflorescence thyrse-like; pedicels 4–20 mm long. Calyx 2–7 mm long, glabrous or pubescent, often tinged purple. Corolla 7–18 mm long, pubescent outside, white, the striations purple; lobes usually ovate to elliptic, 3–11 mm long, papillose inside. Stamens 3–5.5 mm long. Capsule ovoid-ellipsoid, 3.5–5 mm long. Seeds 1.6–2.5 mm long.