Climber (?), 6 m by 2 cm, glabrous except the inflorescence. Leaves subcoriaceous, elliptic to oblong, sometimes slightly obovate, 1.3-2.2 times as long as broad, (9-)13-21(-25) by (6-)8-10(-11.5) cm, smooth except for a few pustules above near the base of the midrib, top c. 0.5 cm acuminate; midrib above broadly sulcate; nerves 9-11 pairs; petiole 2-3 cm. Panicle ∞-flowered, terminal, c. 25 cm long; branches up to 15 cm, all axes angular and fulvous-puberulous. Bracts orbicular 0.5 mm to linear 3 mm. Pedicels 0.5 cm. Buds 10-11 mm long, with cylindrical base and somewhat swollen, acute top. Torus 1.5-2 mm broad. Sepals during anthesis reflexed halfway, narrow-spathulate, blunt to acute, obscurely 3-5-nerved, the base not narrowed but slightly thickened. Androgynophore 2-3 mm, sometimes hairy at the top. Stamens c. 35-40(-48), glabrous, filaments 10—15(-16) mm. Gynophore 8-11 mm, densely puberulous; ovary subglobular, glabrous, c. 2 by 1.5 mm; style 1.5-2(-2.5) mm, glabrous, with 3 small but distinct stigmatic lobes. Pedicel in fruit c. 1 cm, torus 4 mm broad, gynophore 3 mm thick, still hairy. Fruit (only some unripe and a few fragments of a ripe one are known) globular with persistent style, up to 3½ cm diam.; pericarp thin, leathery. Seed c. 2 by 1.5 cm.