Perennial woody lianes, subshrubs or shrubs, evergreen; latex white. Stems without spines. Leaves petiolate, opposite or 3-or 4-whorled; lamina entire or spinose, herbaceous, coriaceous or fleshy, glabrous or with simple basifixed trichomes; colleters absent. Inflorescences axillary or pseudo-terminal, thyrsoid, cymose or paniculate, with 1–many flowers, pedunculate. Flowers scented, sessile or pedicellate. Calyx without colleters. Corolla salverform; tube slightly swollen at area of stamen insertion, glabrous or with indumentum; lobes sinistrorse in bud. Corolline corona absent. Stamens included, inserted in upper part of tube, not adherent to style-head; anthers lanceolate, dehiscing introrsely. Disc absent. Style-head subglobose to cylindrical, shortly bifid. Fruit moniliform with 1–several articles, each article globose to ellipsoidal, 1-seeded. Seeds ovoid, globose, or ellipsoidal-globose, unwinged, with a deep ventral groove, ecomose.
Plants woody lianas or erect to trailing shrubs, with latex. Leaves in whorls of 3 or 4, rarely opposite. Cymes terminal and/or axillary, sometimes in clusters or short thyrses. Flowers small, 5-merous. Calyx deeply divided, without basal glands. Corolla white or rarely yellow, salverform, tube cylindric, widened at stamens insertion, lobes overlapping to left; corona scales absent. Stamens included, inserted at or above middle of corolla tube; filaments very short; anthers free from pistil head; disc absent. Ovaries 2, distinct; ovules biseriate, 4-6 in each ovary. Style filiform; pistil head capitate, apex shortly 2-cleft. Fruit usually paired, moniliform, transversely constricted into 1-5 drupelike articles, or not jointed. Seeds ovate or oblong; endosperm horny, ruminate; cotyledons leaflike, erect or curved.