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Samara up to 3 cm. in diam.; lateral wing subcircular to ovate, entire or ± retuse (rarely emarginate); dorsal crest 5–9 × 2–3 mm., oblique-lanceolate.
Inflorescences terminal and axillary, of loose, few-to many-flowered umbellate panicles, densely covered with reddish spreading hairs.
Petals 5–6 mm. long, white or pale yellow, oblong-elliptic to obovate, entire or somewhat irregularly dentate at the margins.
Woody climber; young stems densely covered with a ferrugineous ± hispid indumentum, very soon glabrescent.
Sepals 1·5–2 mm. long, oblong, rounded at the apex, densely hairy outside.
Stamens with anthers c. 1 mm. long, ovoid; filaments 2 mm. long, glabrous.
Flowers 1–1·25 cm. in diam., actinomorphic.
Ovary glabrous; styles 3, c. 3 mm. long.
