male racemes 7–12-flowered; peduncle 4·5–13·5 cm. long; pedicels of basal solitary flower 2·5–12 cm. long, of racemose flowers 3–32 mm. long; bracts 5–17 mm. long, broadly elliptic, cucullate, rounded to acute. Receptacle-tube 20–30 mm. long, glabrous; lobes 4–8 mm. long, lanceolate. Petal 2·6–2·9 cm. long, c. 1/2 as broad, yellow or pale yellow.
Female flowers on 2–3·5 cm. long pedicels; ovary 22–30 × 4–6 mm., ellipsoid, glabrous; receptacle-tube 14–21 mm. long, lobes 5–22 mm. long, triangular-lanceolate; petals 2·4–4·2 cm. long.
Stems scandent to 8 m. or more, often reaching the canopy of tall trees, rarely prostrate, glabrous or almost so.
Fruit 8·5–15 × 2·5–8 cm., ovoid-oblong, subrostrate, acute; fruit-stalk 3–5·5 cm. long.
Petiole 1·5–7·5 mm. long, glabrous.
Seeds 6·3–9 × 3·3–5 × 1·5–1·7 mm.
Tendrils stout.