Acanthocereus Tetragonus is a type of cactus that is commonly referred to by a variety of synonyms. These synonyms help to clarify the different common names that are used to refer to this plant. Some of the synonyms for Acanthocereus Tetragonus include: Fairy Castle Cactus, Hedgehog Cactus, Night-blooming Cereus, Barbed-wire Cactus and Triangle Cactus. These synonyms are typically used by different people or in different regions of the world, depending on the culture and language that is being spoken. By understanding the various synonyms that exist for Acanthocereus Tetragonus, it is easier to identify and appreciate this unique and beautiful plant.