A lofty woody climber.. Younger branches ± densely ferrugineous-sericeous, older ones usually glabrous, lenticellate.. Leaf-lamina obovate to oblong-obovate, 4.5–9(–11) × 2–4 cm., obtuse or acuminate, cuneate, with margins somewhat involute, subcoriaceous, glabrous, with 12–16 pairs of lateral nerves, usually eglandular (rarely with a pair of much reduced glands beneath near insertion of petiole); petiole 3–5 mm. long, usually glabrous, canaliculate.. Inflorescences on leafy branches terminating in racemes, many-flowered, with a robust densely ferrugineous-sericeous rhachis; bracts lanceolate-triangular, 3–4 mm. long, acute, persistent; bracteoles triangular, 1–2 mm. long, eglandular.. Flowers 2.5–3 cm. in diameter.. Calyx with (l–)2(–3) circular glands, rarely eglandular; lobes ovate to oblong-ovate, 5–6 mm. long, ferrugineous-sericeous or glabrescent outside, shortly ciliate at margins.. Petals canary yellow, subcircular to broadly obovate, 11–15 mm. long, deeply lacerate at margins or rarely entire, very shortly clawed.. Stamens with oblong-ovate anthers 4.5–5 mm. long; filaments 2–3 mm. long, flattened, enlarged at base, glabrous.. Ovary densely ferrugineous-sericeous; styles 2, ± 12 mm. long, usually glabrous.. Wing of samara obliquely oblong to oblong-obovate, 4.5–6 x 1.8–2.25 cm., with upper edge curved towards the acute or subacute apex, clasping the nut to a certain extent but never to its base (see fig. 1/6), usually glabrous.. Figs. 1/6, p. 4, 2/1–6, p. 10.
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