Straggling or climbing shrubs. Leaves simple,
opposite, exstipulate. Inflorescence axillary to terminal racemes or cymes.
Calyx membranous, usually red, with short tube, rotate, enlarged in fruits,
spreading. Corolla gamopetalous, tubular, the tube elongated and dilated at the
throat, curved, 2-lipped, upper lip 2-cleft, the lower 3-cleft. Stamens 4,
didynamous, epipetalous, exserted. Ovary 4-celled with a solitary ovule in each
cell, styles filiform, stigmas 2-fid. Fruit a drupe, sub-fleshy, obovoid,
enclosed by enlarged, persistent, coloured calyx. Seeds oblong.