Saguaro.

Genus of cacti; perhaps the best-known representative is Cereus giganteus, the Saguaro cactus of the Sonoran Desert region of North America (also classified as Carnegiea gigantea).

Genus of globular cactae.

Genus of barrel-shaped cacti.

Genus of plants in the cactus family.

Genus of plants in the cactus family.