Leaf blades 4–15.4 × 1.5–5.8 cm, elliptic or less often broadly elliptic, distinctly acuminate at apex, acute to cuneate at base, chartaceous, drying green, somewhat paler on lower surface, dull or moderately glossy on upper surface, entirely glabrous or finely pubescent beneath or with coarser hairs along the midrib; midrib crested above, prominent beneath, straw-coloured when dry; lateral nerves in 5–6 main pairs, raised on both surfaces; tertiary nerves coarsely reticulate, apparent to indistinct; domatia present; petiole 2–7 mm long, glabrous or sparsely pubescent; stipules 7–17 mm long, 3–6 mm wide at base, triangular at base, abruptly curving to a linear to subulate lobe, mid-nerve apparent.
Inflorescence borne at up to 6 successive nodes, or sometimes excluding the apical one, or sometimes at top 2 nodes only, 2–4(7)-flowered; peduncle up to 3(4) mm long; pedicels up to 5 mm long; bracts/bracteoles 5–6 mm long, lanceolate, ciliate or pubescent.
Calyx glabrous; tube 2.5–3.5 mm long; limb-tube 1.5–2.5 mm long, wider than tube; lobes 3–4 mm long, triangular at base, linear above.
Pollen presenter up to 6 mm long, fusiform or narrowly spindle-shaped, drawn out at apex.
Fruit yellow when ripe, 2.2–7.5 × 1.1–1.5 cm, ellipsoid to ovoid; calyx limb persistent.
Anthers exserted, apiculate at apex, apiculum 0.3–0.5 mm long, shortly hastate at base.
Corolla tube (8.5)10.2–15 cm × 1.5–2 mm; lobes 2–3.3 cm × 2–3 mm, oblong, acuminate.
Shrub or small tree 2–7 m tall; young branches often strongly grooved, glabrous.
Seeds straw-coloured or light to dark brown, thin, 5 mm long, striated.