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Cal-lobes 5, triangular, acute or acuminate, shorter than the coriaceous obconic tube; cor-tube coriaceous, narrowly campanulate or almost tubular, the limb spreading, 5-lobed, only slightly bilabiate; stamens 4, paired, about equaling the cor-tube; fr elongate, narrowly clavate, tapering to both ends, scarcely flattened; seeds in several rows on each side of the broad, thin partition, flat, oblong, broadly winged on each side; woody vines, trailing or climbing by rootlets along the stem, with odd-pinnately compound lvs and large orange-red fls on very short pedicels. 2, the other in e. Asia.
Vines woody, deciduous, climbing by aerial roots. Leaves opposite, 1-pinnately compound; leaflets serrate. Inflorescences short paniculate, terminal, or flowers in clusters. Calyx campanulate, subleathery, irregularly 5-lobed. Corolla red or orange-red, campanulate-funnelform, slightly bilabiate; lobes spreading, semirounded. Stamens 4, didynamous, curved, included. Ovary 2-locular, base surrounded by a large disc. Capsule dehiscing loculicidally. Seeds numerous, compressed, membranous, with semitransparent wings.
