Leaves tending to be restricted to apex of branches but not strictly so; blades 4–12 × 2.5–5(7) cm, elliptic to broadly elliptic or occasionally round or oblong-elliptic, acute to subacuminate or acuminate at apex, acute to cuneate or sometimes obtuse at base, stiffly papery, drying blackish-brown with nerves pale above and glaucous beneath; lateral nerves in 4–5(6) main pairs; tertiary nerves coarsely reticulate, either apparent or obscure; domatia present as hairy tufts; petioles 6–10 mm long; stipule base 2–3 mm sheathing, bearing a linear-subulate lobe 2–3 mm long, pubescent within.
Flowers 5-merous, borne in many-flowered pedunculate cymes; peduncle 10–25 mm long, glabrous to sparsely pubescent; pedicels 2–6 mm long, sparsely pubescent to pubescent; bracts and bracteoles linear, 1–2 mm long.
Corolla white; tube 8–14 mm long, slightly pilose at throat, with a ring of deflexed hairs set at about one third of the way from the top inside; lobes 5–9 × 2.2–5 mm, oblong-elliptic to narrowly obovate, acute.
Shrub or tree 2–3(12) m tall, erect or sometimes scandent or a tree 14 m tall, glabrous; stems covered with reddish-brown rather powdery bark, lenticellate.
Pyrene 17 × 13 × 11 mm, almost semicircular in outline, gradually rounded at point of attachment, strongly rugulose and grooved.
Calyx tube 1–1.5 mm long, glabrous; limb 1–2 mm long, repand to slightly dentate.
Pollen presenter 2.25–2.5 × 1.5–2 mm, well exserted, ovoid, ridged.
Anthers erect or sometimes spreading, but not reflexed.
Fruit 18–25 × 19–27 mm, subglobose, somewhat bilobed.