FRANK ZULLO / SCIENCE PHOTO LIBRARY FRANK ZULLO / SCIENCE PHOTO LIBRARY
Saguaro cactus flowers (Carnegiea gigantea) at sunrise. Three of the arms on this cactus are deformed and have twisted downwards. This could be caused by frost damage or disease. This species of cactus is native to the deserts of Arizona. Photographed in South Mountain Park, Arizona, USA.
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