DR. JOHN BRACKENBURY / SCIENCE PHOTO LIBRARY DR. JOHN BRACKENBURY / SCIENCE PHOTO LIBRARY
Prickly pear (Opuntia ficus-indica) fruiting. This cactus is native to arid regions of North and Central America, but has been introduced to many other areas of similar climate. It is grown as a crop in such regions, where few other plants can't grow. Its fruits (pink) are edible, as are its young stem segments (cladodes). Photographed on Tenerife, Canary Islands.
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