Lofty woody climber, glabrous in all its parts.. Stems 5–30 m. long and up to 20 cm. in diameter at the base; young branchlets subquadrangular, pale brown and shining or dull purple-brown, usually bearing flattened recurved prickles along the edges; older branchlets longitudinally fissured, with scattered prickles except at the base; tendrils usually present, pedunculate, in 1–3 pairs.. Leaves petiolate; petiole 5–10 mm. long; lamina coriaceous, oblong-elliptic to broadly elliptic, 8–16 cm. long, 4.5–7 cm. wide, acute or rounded and then abruptly acuminate, cuneate or rounded at the base, 3-nerved from just above the base; nerves impressed above, prominent below; subsidiary lateral nerves arising at wide angles.. Cymes axillary, many-flowered; peduncle 1–3 cm. long.. Flowers 5-merous.. Calyx-lobes suborbicular, wrinkled, ciliate.. Corolla greenish; lobes thick, deltoid, about half the length of the tube, with dense hairs forming a ring at the base.. Anthers thinly bearded, subsessile, inserted about the middle of the corolla-tube.. Ovary ovoid; stigma sessile, oblong, bilobed.. Fruits globose, 9–12 cm. in diameter, with a woody rind, yellow.. Seeds numerous, large, compressed, about 3 cm. in diameter, poisonous.
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A creeper. It has prickles on the nodes. The stems can be 5-30 m long and 20 cm across. The young branches are almost 4 sided. Older branches have cracks along them. The leaves are oblong and 8-16 cm long by 5-7 cm wide. The fruit are large. They are 9-12 cm across.
A lofty liane with large fruits and prominent internodal prickles
Climbing into the forest canopy in rainforest, including secondary forest, at elevations from sea-level up to 1,200 metres.
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It is a tropical plant. It grows in forests up to 700 m above sea level.
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