Ferocactus cylindraceus (habit). Location: Nevada, Calico Hills second pullout Red Rocks
<a rel="nofollow" class="external text" href="http://www.hear.org/starr/">Forest &amp; Kim Starr</a>
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Plants of Hawaii, <a rel="nofollow" class="external text" href="http://www.starrenvironmental.com/images/full/starr-071221-0164.jpg">Image 071221-0164</a> from <a rel="nofollow" class="external free" href="http://www.starrenvironmental.com/plants/images/image/?q=071221-0164">http://www.starrenvironmental.com/plants/images/image/?q=071221-0164</a>