Climbers, evergreen to semievergreen, glabrous throughout. Branches solid, glabrous, sometimes with bristles. Winter buds with several pairs of broad, shortly acuminate scales. Petiole 1-2.5 cm; leaf blade elliptic to oblong, 7-15 × 4-7.5 cm, leathery, base broadly cuneate to rounded, sometimes slightly decurrent, apex acute to acuminate. Flowers fragrant, paired, axillary, toward apices of branchlets, sometimes shortly paniculate; peduncle 4-15 mm; bracts triangular, ca. 1.5 mm; bracteoles ovate-triangular, 0.5-1 mm. Neighboring 2 ovaries free. Calyx cupular; lobes triangular, 0.5-2 mm. Corolla bilabiate, white, becoming yellow and tinged with pink, 7.5-12 cm; tube 4.5-7 cm, ca. 4 mm in diam., not gibbous at base; upper lip 4-lobed, 2 lateral ones split to middle, middle ones only slightly lobed. Stamens and style exserted from corolla tube; filaments pubescent; anthers linear, 7-8 mm. Style and stamens shorter to equaling corolla, pubescent. Berries green, globose to pyriform, large, ca. 2.5 cm; seeds few, ca. 8 mm. Fl. Mar-Jul, fr. May-Aug.
Can be grown by cuttings or seedlings. Seeds needs stratification.
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