A modern reference to temperate woody plants, including updated content from this site and much new material, can be found at Trees and Shrubs Online.




A large genus of shrubs and climbers, mostly tropical, only three species of which are hardy. Leaves opposite. Flowers in wide, cymose or corymbose clusters. Corolla slender-tubed, five-parted at the mouth. Calyx at first bell-shaped or inflated, persistent, becoming fleshy, with the sepals reflexed. Stamens four. Fruit fleshy, and highly coloured.

Species articles