Small tree 3–8.5 m tall; green stems pubescent; older stems with dark red-brown or purplish bark, sometimes lenticellate.Leaves paired at apex of main and lateral branches, sometimes immature at time of flowering; blades 4.5–13 × 2.5–12.5 cm, elliptic to broadly elliptic when young, broadly to very broadly ovate when mature, distinctly acuminate at apex, acute (when young) or rounded to subcordate at base; papery, sparsely pubescent to pubescent above, pubescent beneath; lateral nerves in 6–8 main pairs, acutely angled; tertiary nerves very finely reticulate; domatia inconspicuous; petioles 5–13 mm long, pubescent; stipules 8–11 mm long, triangular-ovate, acuminate with marginal area rather membranous and shiny, scarcely hairy within, soon caducous, seldom persisting beyond second node.Flowers 5-merous, in 10–30-flowered cymes; cymes restricted to apical node of mature stem, pedunculate; peduncles 5–25 mm long, pubescent; pedicels 0–2 mm long, pubescent; bracteoles small.Calyx tube c. 1 mm long, densely pubescent; calyx limb not exceeding disk.Corolla bright yellow or greenish; tube 2–3 mm long, pubescent at throat; lobes 2 × 1.25 mm, triangular or oblong-lanceolate, acute and thickened at apex.Style slightly exserted; pollen presenter 1 × 0.75 mm, ribbed.Fruit 7–9 × 8–9 mm, ± square in lateral view, slightly tapered towards the base and slightly indented at apex, sparsely pubescent; pedicel lengthening to 2–4 mm long.Pyrene 7–8 × 4–5 mm, oblong-ovoid, with a well or poorly defined apical crest, rugulose.
