This is a cactus species native to southern Arizona and northwestern Mexico. It's a spineless mutation of the Senita cactus, as Stevens informed us.

PHOENIX -- Citing everything from grazing to insects, the U.S. Fish and Wildlife Service on Monday granted endangered species protection to two cacti found in Arizona. The move comes two years after ...

Saguaro National Park is famous for its namesake giant cactus, but many might be surprised to learn that the park is home to an amazing variety of other cacti — 25 species in all. In addition to ...

Extreme heat and drought are putting new pressures on wildlife in Arizona, even species that have adapted to desert conditions over thousands of years. A biologist who studies rattlesnakes had never ...

WASHINGTON (CN) - The U.S. Fish and Wildlife Service proposed two Arizona cacti for endangered status, while bumping the daisy-like Lemmon fleabane from consideration, after a 12-month review. Both ...

There is a growing interest in rare cactus species, which is spawning more illegal poaching of these endangered species from the wild.

Arizona's saguaro cacti, a symbol of the U.S. West, are leaning, losing arms and in some cases falling over during the state's record streak of extreme heat, a scientist said on Tuesday. Summer ...

TUCSON, Ariz. — Following multiple petitions and lawsuits, the U.S. Fish and Wildlife Service today again protected the cactus ferruginous pygmy owl as threatened under the Endangered Species Act ...