Allamanda cathartica (Yellow Allamanda)

Native from northern South America to northern Bolivia, this evergreen climbing shrub can reach about 20 feet tall over supporting vegetation. It produces clusters of golden-yellow trumpet-shaped flowers with reddish lines inside the throat. Its prickly capsules contain winged seeds, and stem fragments can grow into new plants. It has naturalized in Florida, China, Queensland, and northern Western Australia. In northern Queensland, it is invasive in roadside bushland and rainforest margins. All parts are poisonous if eaten, and its milky sap can irritate skin and eyes. Photographed in Valle del Cauca, Colombia.