cacti, yuccas and conifers among rocks in the rock desert in joshua tree national park, california

cacti yuccas conifers joshua tree national park california agavoideae arid arizona asparagaceae asparagales asparagus barren barrenness biodiversity cactus chain fruit cholla desert succulents desolate drought droughts dry dryness flora hardy np landscape landscapes nature north america palm yucca plant rock saguaro sarcoyucca scenic sonoran spine treelike usa vegetation wild wilderness brevifolia