california barrel cactus, compass barrel (ferocactus cylindraceus) and engelmann prickly pear

arizona cacti landscape scenery desert grow california barrel cactus compass cylindraceus aerial view arborescent arid deserts succulents dry engelmann 039 prickly pear ferocactus acanthodes eastwoodiae wislizeni wislizenii flora hardy hot nature north america plant rock southeast nevada spine vegetation weather wild wilderness