Anemopaegma longidens
Native to French Guiana and northern and west-central Brazil, this woody climbing vine occurs in the Amazon and Cerrado regions. Three-branched tendrils replace terminal leaflets and help it grasp supporting vegetation. Yellow trumpet-shaped flowers are about 2 inches long. Their cup-shaped calyx has prominent pointed lobes, a useful distinguishing feature. Four pollen-bearing stamens are arranged in two unequal pairs, with a nectar-producing disk at the base of the flower. Photographed in Florida.