Barrel Cactus
The Barrel cactus can be easily distinguished from other cacti because of it cylinder-shaped body. The cactus usually reaches from around five to eleven feet tall, and at that height it is one of the largest cacti in the North American deserts. This cactus is really a man-sized (or bigger) cylinder with numerous parallel ridges that run down the sides. These ridges are topped with dangerously sharp 3-4 inch spines. The barrel cactus is also a flowering plant. It has rings of yellow-green or red blossoms at its top.