a cactus in the mitchell park domes in milwaukee, wi usa.

cactus mitchell park domes milwaukee usa cacti adapted dry environments desert driest earth adaptations conserve succulents thickened fleshy species spines herbivores 039 stems photosynthesis native americas patagonia canada rhipsalis baccifera grows africa sri lanka dries succulent plant carnegiea gigantea opuntia mammillaria thorns prickles transpiration caryophyllales nightblooming cereus chlorophyll epiphyte saguaro stoma pereskia xerophyte schlumbergera cactaceae cochineal maihuenia areole ariocarpus pereskiopsis agave pachycereus pringlei barrel houseplant prickly