closeup detalis of southwestern desert cactus with sharp spines against granite rock background

america american botanic botanical botany cactus cephalocereus closeup colorful dead desert dry euphorbioides fresh garden gardening granite green health light natural nature needle neobuxbaumia pastel pattern plant prickles prickly protected protection saguaro semiarid sharp southwest southwestern spikes spines spiny succulent tall thorns thorny tourism travel usa western