Ferocactus wislizeni (Arizona Barrel Cactus) is a barrel-shaped or columnar cactus with a stem that grows up to 6.5 feet (2 m) tall and up…
Ferocactus is a genus of large barrel-shaped cacti. They are found in the southwestern United States and northwestern Mexico. The name derives from the Latin word "ferox", meaning "fierce" and the Greek word "kaktos", meaning "thistle".
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Ferocactus glaucescens (Blue Barrel Cactus) is a barrel cactus with usually solitary bluish-green stems with 11 to 15 ribs and clusters of…