Slender climber to 5 m., glabrous.. Leaf-blades pale green, not punctate beneath, entire, elliptic to oblong or oblong-lanceolate, base acute to sub-cordate, top obtuse to acute, up to 1.5 cm. acuminate, 4–17 by 2–7(–8) cm., ± penninerved, sometimes with stronger nerves from near base, margin entire; petiole 0.5–2.5 cm.. Glands at blade-base 2, on 2 ± hollowed auricles 1.5–3 mm. in diameter lateral at the top of the petiole; blade-glands scattered or submarginal, (0–)1–8 at either side.. Stipules narrowly triangular, ± 0.5 mm., withering.. Inflorescences peduncled for up to 12 cm., up to 30-flowered in male, up to 10-flowered in female; tendrils (0–)1 or 3, 0.5–15 cm.; sterile tendrils up to 20 cm.. Male flowers tubiform, including the 0.5–3 mm. long stipe 15–23 mm.; hypanthium broadly cup-shaped, ± 5-saccate, 1.5–2.5 by 5–8 mm.; calyx-tube 8–12 mm.; calyx-lobes ± elongate-triangular, subobtuse to acute, subentire, 4–10(–12) mm.; petals linear to oblong, or spathulate or long-clawed, obtuse, 6.5–12 mm., (1–)3-nerved, fimbriate, inserted at the same level as the corona; filaments 4–7 mm., connate for up to 1–5 mm., inserted at the base of the hypanthium; anthers 5–6 mm., subobtuse, sometimes shortly apiculate; septa up to 1.5 mm. high; corona composed of fine threads 1–2 mm.; disk glands 1–1.5(–2) mm.. Female flowers tubiform, including the 0–0.5 mm. long stipe 13–24 mm.; hypanthium broadly cup-shaped, ± 2 by (5–)7–9 mm.; calyx-tube 6–15 mm., calyx-lobes 5–7.5 mm.; petals linear, subacute, 4–10 mm., 1-nerved, entire, inserted at the same level as the corona; staminodes 3.5–7 mm.; septa up to 0.5 mm. high; corona threads fine, 1–2 mm.; disk glands 1–1.5(–2) mm.; gynophore ± 0.5 mm.; ovary ovoid-fusiform, 6–8 mm., ± 3-angular; styles connate for 0.2–2.5 mm., style arms 1.5–2.5 mm.; stigmas lacerate, woolly-papillate, each 3–4 mm. in diameter.. Fruits 1–6 per inflorescence, broadly fusiform, up to 2 mm. beaked, (3-or)6-angular, excluding the ± 1 mm. long gynophore 2.5–3(–3.5) by 1.5–2 cm.; pericarp woody-coriaceous, 1–2 mm. thick.. Seeds 20–30 per capsule, ovoid-oblong, 5–6(–7) mm.
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A slender climber. It can be 5 m tall. The leaves are pale green. They are 4-17 cm long by 2-7 cm wide. The flowering stalk is up to 12 cm long. There are 30 male flowers and 10 female flowers. There are 1-3 tendrils that can be up to 15 cm long. The flowers are tube shaped. There are 1-6 fruit in a group. They are narrow and angular. There are 20-30 seeds.
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