Shrub or tree, up to c. 5 m tall; branches, undersides of leaves and calyces tomentose with whitish hairs that sometimes turn rusty. Leaf-blades lanceolate to ovate or suborbicular, 0.8–17 x 0.4–6 cm, acuminate to obtuse at the apex, cuneate to truncate at the base, serrate to entire; leafy stipules sometimes present; petiole 1–10 mm long. Flowers in raceme-like terminal inflorescences 3–25 x 0.8–2.5 cm. Calyx 2–3.5 mm long, shortly lobed. Corolla orange, 5–10 mm long, densely pubescent outside; lobes 1.5–3 mm long, rounded. Anthers subsessile. Pistil 2–4.5 mm long, pubescent. Capsule ellipsoid, 2.5–5 mm long.