A strong woody climber up to 6 m. or more in length; stems terete, lenticellate, usually glabrous.. Leaf-lamina varying from elliptic-lanceolate to oblong or oblong-elliptic, 6–13 × 2.5–6.5 cm., ± abruptly apiculate or acuminate, broadly cuneate, rounded or subcordate at the base, subcoriaceous, usually glabrous on both surfaces (rarely pubescent when young), with 5–9 pairs of lateral nerves and with 2–4 circular glands near the margin at the base beneath; petiole 0.5–1.5 cm. long, canaliculate, sparsely pubescent or glabrous; stipules ± 1 mm. long, linear-subulate, soon deciduous.. Inflorescences pubescent to sometimes tomentose, few-flowered; bracts oblanceolate or elliptic, 3.5–5 mm. long, pubescent, usually persistent; bracteoles very small, deciduous.. Flowers 1–1.5 cm. in diameter, whitish or yellowish; pedicels up to 20 mm. long, slender.. Sepals oblong-elliptic, (2–)3–6 mm. long, tomentose outside, pubescent inside.. Petals obovate or broadly elliptic, 5–8 mm. long, entire but sometimes crenulate or ciliolate at the margins; claw 3–4.5 mm. long.. Anthers oblong, 1.5–2 mm. long, usually ± pilose; filaments 2–3 mm. long, glabrous.. Ovary tomentose; styles filiform, 2.5–4 mm. long.. Samara 2.4 2.7 cm. in diameter; apical wing 8–10mm. broad; lateral wings 2.8–3 × 1–1.4 cm.; often all wings lacking especially in very mature fruits.. Fig. 6.
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