When Sharmila Dey and Genevieve Erickson began dreaming up names for a youth literary magazine, they wanted something that would represent Tucson. Carnegiea gigantea — the scientific name for the ...

If the first plants you think of when you hear "cactus" are those immense, multi-branched Saguaro cactuses (Carnegiea gigantea) so frequently featured in cowboy movies, you should know there are over ...

The saguaro (Carnegiea gigantea) is the world’s largest cactus: An adult can weigh up to 8 tons. It has shallow roots that grow 4 to 6 inches deep, but one root, like a taproot, reaches more than 2 ...