Shrub or tree 1–10 m high, branching from the base; bark rough grey-brown; slash cream with fine orange streaks; young branches glabrous or pubescent, conspicuously angled and ribbed. Leaves petiolate, petiole 3–6 mm long; blade ovate, obovate, elliptic to suborbicular, 1–8(–10) cm long, 1.1–6.5 cm wide, rounded or acute at the apex, with a hard mucro, sometimes emarginate, cuneate or rounded at the base, coriaceous, glabrous; secondary veins obscure, especially beneath. Inflorescence contracted, of many-flowered axillary cymes; sepals ovate, 1–2 mm long, 0.5–1 mm wide, pubescent or glabrous, ciliate. Corolla tube pink or reddish, 8–11 mm long, glabrous or pubescent on external surface, inner surface pilose in the upper half and wrinkled below; lobes pink outside, white inside, ovate, 2.5–3.5 mm long, 1.5–2.5 mm wide, acuminate at the apex, pubescent at the base inside, glabrous or pubescent outside, ciliate; stamens slightly exserted, inserted at 7–10 mm from the base; anthers ovate, 1–1.5 mm long, acumen 0.2 mm long; pistil 7.5–10 mm long. Fruit purple when ripe, ellipsoid, 10–25 mm long; seeds up to 13 mm long. Fig. 5/5–6 (p. 16).