Handroanthus serratifolius is a species of evergreen tree in the family Bignoniaceae. It is native to Brazil and commonly known as the 'Yellow Trumpet Tree'. The tree can reach up to 30 meters (98 feet) in height and has a broad, spreading crown with a diameter of up to 20 meters (66 feet). The bark is gray and smooth when young, becoming rough and brown with age. The leaves are compound, with 5-7 leaflets that are serrated along the edges. The flowers are large and showy, with a bright yellow color and a trumpet-like shape.