Climber with twining stems; stems glabrous or pubescent; latex clear. Leaves green, soft, thin; petiole 5–12 mm long; lamina lanceolate, oblong-lanceolate or ovate, 4–15 cm long, 1.5–5 cm wide, cordate or rounded at base, long-acuminate, glabrous or with lower surface softly pubescent; tertiary veins distinct below, forming backwardly curving connections between the raised secondary veins. Inflorescence of short, axillary, umbel-like cymes; axes puberulous or finely pubescent; pedicels 2–7 mm long. Calyx lobes ovate, hairy. Corolla whitish; tube inflated, globose, c. 3.5 mm diam., bearded internally; lobes widely spreading to recurved, ovate, 2.5–3 mm long, glabrous. Anthers lightly cohering, readily separable, each with a prominent dorsal ridge; anther cone c. 3 mm long, half-exserted; filaments short, straight or slightly twisted; anther tails diverging, broad. Nectary scales connate in a ring with c. 10 short, apical lobes. Capsules slender, fusiform, 9–15 cm long, 0.6–1.2 cm diam., puberulous.
Grows in warmer rainforests, mainly in wetter subtropical rainforests, but also in drier types, often in basalt-derived soils.
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