<a href="//commons.wikimedia.org/wiki/Category:Cactus_specimens_in_the_University_of_California_Botanical_Garden" title="Category:Cactus specimens in the University of California Botanical Garden">Cactus specimens in the University of California Botanical Garden</a> greenhouses, Berkeley Hills, California.
Daderot
<span class="int-own-work">Self-photographed</span>