Echinocactus grusonii Hildm. in the greenhouse of the Botanical Garden in Linz / Austria / 21.03.2014
<a href="//commons.wikimedia.org/wiki/User:Isiwal" title="User:Isiwal">Isiwal</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>