Amorphophallus titanum, the titan arum, is a flowering plant in the family Araceae.

Due to its odor, like that of a rotting corpse, the titan arum is characterized as a carrion flower, and is also known as the corpse flower or corpse plant (Indonesian: bunga bangkai—bunga means flower, while bangkai can be translated as corpse, cadaver, or carrion). The titan arum's berries arrange in a regular cylindrical form that resembles the packing of spheres inside a cylindrical confinement. Those structures are also called columnar structures or crystals.