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Woody stem-twining lianas or scandent shrubs, sometimes (not in Australia) treelets, unarmed; indumentum of simple trichomes. Flowers bisexual, mostly solitary, terminal, becoming leaf-opposed following growth of axillary shoot, sometimes (not in Australia) axillary, internodal or from old wood, usually fragrant; pedicel frequently with a submedial foliaceous bract. Sepals valvate, free or half-connate. Petals free, valvate, flat, both series similar or the inner ones smaller. Stamens with a broad truncate connective tip concealing anther cells. Pollen grains solitary, spinulose. Carpels numerous, pubescent; ovules several, superposed; stigma subglobular, adaxially grooved. Apocarps moniliform, stipitate, apiculate, indehiscent but often disintegrating into 1–5 or more ellipsoidal segments. Seeds mostly broadly ellipsoidal or subglobular, smooth, light brown.
