Bougainvillea (Bougainvillea glabra) in a large tree form develops with a defined central trunk supporting an elevated canopy of branching stems. The trunk becomes woody and structured, allowing the plant to rise before spreading into a broad crown. Leaves are small and oval, arranged alternately along the branches, while vivid bracts cluster at the tips, creating striking seasonal displays.

Native to South America, Bougainvillea glabra naturally grows as a climbing shrub but can develop a tree-like form when supported or trained. The species is biologically notable for its thorn-bearing stems and prolific bract production. In this large tree expression, the plant emphasizes vertical structure combined with expansive canopy spread, highlighting its adaptability and capacity for varied growth forms within tropical environments.