Vine to 30 m high, climbing by adventitious roots and twining stems; young shoots minutely pubescent; latex clear, yellowish. Leaves dimorphic or trimorphic. Juvenile leaves thin, 1–5 cm long, cordate, purple below. Adult leaves thick, firm to rigid, yellowish green; petiole 5–45 mm long; lamina elliptic to oblong-ovate, 4–24 cm long, 1.5–8 cm wide, rounded or cordate at base, usually acute, glabrous or puberulous; lower surface glaucous; net veins distinct, with fine vein reticulum strongly raised on upper surface of dried leaves. Inflorescence of terminal or axillary many-flowered panicles; axes finely hairy; pedicels 1–4 mm long. Calyx lobes appressed to corolla, ovate, c. 2.5 mm long, pubescent outside. Corolla cream, yellowish or pink; tube c. 3 mm long; lobes spreading to recurved, oblong-lanceolate, 4–5 mm long, externally pubescent towards base or nearly to tips. Anther cone 3–4 mm long, half-exserted to just exserted; filaments straight; anther tails straight. Nectary scales free, thick, c. 0.7 mm long, obtuse, whitish. Capsules terete-fusiform, semi-woody, 10–20 cm long, c. 1 cm diam., puberulous.
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A woody climber. The trunks are twisted and bent. The leaves are shiny. The flowers are small and yellow. The pods are 20 cm long.
Grows in rainforests and open forests, sometimes in heaths and shrublands, also in shrubbery on headlands.
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It is a subtropical plant.