Lianas, lacticiferous. Leaves opposite, non-glandular, pinnately-nerved; peti-oles somewhat perfoliate, glandular in the axils. Inflorescences dichasial, often modified by reduction or suppression, mostly axillary, 1-to many-flowered. Flowers small to medium-sized; bracteoles present; calyx 5-lobed, the lobes equal to sub-equal, bearing 1 frequently lacerate oppositely placed squamella within; corolla salverform, without appendages, the tube straight, the limb 5-lobed, the lobes dextrorsely convolute; stamens 5, included, the anthers connivent and aggluti-nated to the stigma, with an enlarged connective; gynoecium 2-carpellate, apo-carpous, the ovary superior, the ovules many, the nectaries 5, separate or ? con-crescent, the style 1, the stigma fusiform-subcapitate. Fruit apocarpous, of 2 fol-licles, terete, continuous or slightly articulate; seeds many, dry, rostrate, comose apically.
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