The strange forms of the desert plants like the cacti teach the children further secrets of the world they live in. They grow only where there is a little interplay between earth and sky, the rhythmic mediation of rising moisture and falling rain is almost lacking in the desert. Earth forces prevail forming the plant into distorted organism of roots and thick leathery stalk. Nothing left of the leaf part but the veins, which become a dried out skeleton., a group of spiny thorns., when blossom develops they look like they fall from the sky and lodged by mere chance on top of the cactus, a resemblance between star and blossom. Another strange plant which will be contrast to the cactus in mushroom, it is a stalk organism, the cactus is firmly rooted the mushroom not at all cactus is hard angular and contracted the mushroom is soft, round and swollen. Cactus without water but must have warmth and sunlight the mushroom in the cool dark and wet.