Procumbent to erect shrubs (in Victoria) or woody lianes, glabrous; sap milky. Leaves opposite or in whorls of 3–6; petiole short. Inflorescences axillary or terminal cymes. Flowers subsessile or shortly pedicellate; sepals ovate, lacking basal glands; corolla mostly white, tube cylindric, hairy inside, lobes broad, spreading, contorted in bud; stamens enclosed in corolla-tube, inserted high in tube on short filaments, glabrous, free from stigma; anthers with short apical appendages; carpels free except at style, style head ovoid. Fruit a drupe, single or paired, each either 1-seeded by abortion or 2–5-seeded and moniliform; articles 1-seeded.
About 120 species from Asia to Australia; 8 species in Australia.