Carnegiea is a genus of cactus native to the Southwestern United States and Northwestern Mexico. There are a few different synonyms that can be used to refer to this cactus, including the saguaro cactus, the Arizona giant cactus, the pitahaya dulce, the sahuaro, and the rhequiaro. The saguaro cactus is perhaps the most commonly used synonym for Carnegiea, as it is the most widely recognized name for this plant. The cactus is an iconic symbol of the American Southwest, and is often seen standing tall and proud among the rocky desert landscapes of the region. Whether called Carnegiea or any of its other synonyms, this cactus is truly a remarkable and beautiful plant.