Ovary subglobose, c. 1 mm. long, with a ring of stiff erect hairs at the apex; style, clavuncle and stigma 4–5 mm. long.
Vigorous liane climbing to 30 m.; stem terete, slash pink with white milky sap, bark brown, almost smooth.
Fruit globose, up to 6 cm. in diameter when ripe, yellow or orange with white or orange pulp, edible.
Young branches glabrous, lenticels conspicuous, small, circular, light-coloured, numerous.
Leaves membranous, not strongly discolorous; petiole 8–14 mm. long, glabrous; lamina 7–19·5 x 4–9·5 cm., elliptic or ovate, rounded or obtuse at apex, rounded to subcordate at base; both surfaces glabrous, with lateral and tertiary nerves in relief; midrib raised below, impressed, level or slightly raised above; vein reticulation weakly scalariform.
Inflorescences terminal many-flowered paniculate cymes, forming large dense heads or lax and tendrillous; axes glabrous or tomentose.
Calyx 2·5–3 mm. long, lobes strongly imbricate, free to base, oblong, rounded at apex, dorsally glabrous or tomentose, minutely ciliate.
Flowers large, white, attractive, very sweet-scented.
Stamens inserted just below the middle of the corolla tube; anthers c. 2·75 mm. long, subsessile.
Corolla tube 18–24 mm. long, slender, slightly inflated just below the middle, outer surface completely glabrous or pubescent, especially towards the apex, inner surface pilose; corolla lobes 16–30 x 3–9 mm., oblong-elliptic or obovate-elliptic, rounded at apex, minutely and irregularly ciliate, lower surface glabrous or pubescent towards the base, upper surface glabrous or shortly pilose near the base.
Leaves petiolate; blade ovate or elliptic, 4.5–24 cm long, 3.4–12 cm wide, rounded, obtuse or rarely shortly acuminate at the apex, oblique, rounded or subcordate at the base; petiole 7.5–20 mm long.
Liana up to 20 m long; trunk up to 15 cm in diameter; wood reddish or yellow; bark rough, scaly, often fissured.
Fruit yellow or orange, (sub-)globose, up to 11 cm in diameter; pericarp 1–2.4 cm thick; very young fruits hairy; seeds whitish, yellow to brown, up to 1 cm in diameter.
Fig. 10 (p. 33).
Inflorescence a many-flowered congested cyme; peduncle 2–6(–32) cm long; pedicels 1–7 mm long.
Flowers white with a yellow or orange throat; sepals 1.7–4 mm long, 1–2 mm wide; tube greenish, 16–34 mm long; lobes 19–41 mm long, 4–12 mm wide; ovary with a ring of white stiff hairs at the apex, ovules ± 50; stigmoid apex up to 2.2 mm long.