The Saguaro Cactus - A Natural History

The saguaro, with its great size and characteristic shape—its arms stretching heavenward, its silhouette often resembling a human—has become the

Strong Arm' Saguaro cactus dies in Arizona desert

On Growth and Form: Ecology and Evolution of Columnar Cacti - Natural History Institute

Scientists expand saguaro cactus research - Cronkite News

A History of Saguaro Cactus Monitoring in Saguaro National Park, 1939-2007 (U.S. National Park Service)

The Saguaro Cactus: A Natural History (Southwest Center Series): Yetman, David, Búrquez, Alberto, Hultine, Kevin, Sanderson, Michael: 9780816540044: : Books

Saguaro National Park - Wikipedia

NPS Natural History Handbook: Saguaro

Saguaro and other towering cacti have a scrambled history

Carnegie's Cactus: Carnegie gigantea