Callaeum macropterum, is native to Mexico and Central America; it is cultivated in warm parts of the United States, where it grows as a twining, evergreen vine typically trained on fences or trellises. In full sun and well-drained soils it develops rapidly, reaching about 10–20 ft and blooming through warm months, and it tolerates seasonal drought once established while showing sensitivity to hard freezes, which can defoliate the plant but are often survived by protected roots. The flowers appear in short clusters along new growth and are about 1–1.5 in across, each with five rich yellow petals that are narrow at the base and broader toward the tip, plus a distinctive pair of shaggy, fringed crests that give the blooms a textured, “orchid-like” look typical of its group. After flowering it forms unusual samaras that dry to a tan color and resemble small butterflies, a trait that makes the vine popular for ornamental display and for dried arrangements; these winged fruits also aid wind dispersal and are a key field mark for identification. Photographed in Florida.