Shrub or small tree, occasionally scandent, 1.2–7(9) m tall, with slender spreading branches; shoots brown, greyish to mid red-brown, dull usually with sparse to dense lenticels and sometimes rather peeling epidermis, glabrous; in some forms some side branches are modified into spines.Leaves thin or very thinly membranous, 2–15.5 × 0.8–6.6 cm, elliptic to oblong-elliptic, bluntly subacute to obtusely acuminate or distinctly narrowly acuminate at the apex, cuneate to almost rounded at the base, glabrous or with both bristly hairs and much shorter hairs on the upper and particularly lower surface and usually also bristly ciliate; lateral nerves in 5–6(7) main pairs; tertiary nerves rather coarsely reticulate; stipules with base 1–2 mm long, and filiform apex 2–11 mm long; petiole 3–7 mm long.Inflorescence graceful, 1–3.5 cm long, the rhachis, pedicels and calyx tube glabrescent to shortly pubescent; ultimate branches 3–8-flowered; peduncle 4–15 mm long with paired ovate-oblong bracts 1–2 mm long; pedicels 1–5 mm long.Calyx tube 1 mm long, subglobose, glabrous to pubescent; lobes 2–6(7) mm long, linear or oblong-linear.Corolla acuminate or acute, usually 5-tailed in bud; white, green or golden-green, glabrous; tube 2–3 mm long, not markedly hairy at throat; lobes 2.5–3 mm long, narrowly triangular, ± obtuse to distinctly appendaged and apiculate at the apex.Style slender, 3.5–4.5 mm long; pollen presenter 0.75 mm long, cylindrical, minutely 5-lobulate.Fruit yellow, 1.4–2 cm in diameter, subglobose, on stalks 0.1–3 cm long; pyrenes 3–5, each 1.3–1.5 cm long.