<p>Ferocactus cylindraceus
Common Name(s): California Barrel, Cliff Barrel, Compass Barrel, Compass Cactus, Desert Barrel, Golden-Spined Barrel, Spiny Barrel Cactus 
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Synonym(s): Echinocactus viridescens, Echinocactus acanthodes, Ferocactus acanthodes, Echinocactus lecontei, Ferocactus leconti, Ferocactus rostii, Echinocactus hertrichii, Ferocactus tortulispinus
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/33429685@N04">Brett Colbert</a>
CC BY 2.0
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/brettcolbert/6945710718/">Ferocactus cylindraceus</a>
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<ul><li>Uploaded by <a href="//commons.wikimedia.org/wiki/User:Uleli" title="User:Uleli">uleli</a></li></ul>