Saguaro (Carnegiea gigantea) and prickly pears (Opuntia sp.), in the East Unit of Saguaro National Park, Sonora Desert (USDA, 2010; Powell and others, 2006).
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Saguaro (Carnegiea gigantea) and prickly pears (Opuntia sp.), in the East Unit of Saguaro National Park, Sonora Desert (USDA, 2010; Powell and others, 2006). |
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