Cristate Saguaro
This is the crest of the specimen Cristate Saguaro at the Tucson Botanical Gardens. There is no definitive answer as to why some saguaros grow a crest like this one. This rare variation might be caused by genetic mutations, lightning strikes, insects damage or any number of other causes. It does make for an interesting change to these cacti that only grow in the Sonoran Desert of southern Arizona and northern Mexico.
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