Please note that the Museum will be closing at noon on Wednesday, September 9, 2026 for a staff appreciation event. (Art Institute classes are not affected by the closure.)
This scene contains all three columnar cacti that occur in the United States. Senita (Lophocereus schottii) is on the left, organ pipe cactus (Stenocereus thurberi) in the middle, and saguaro (Carnegiea gigantea) on the right. Senita Basin, Organ Pipe Cactus National Monument, Arizona.
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