Cross-section of an unidentified young puffball mushroom (with parts of mycelium) found on the edge of a forest path in Alsace (67), France.
<a href="//commons.wikimedia.org/w/index.php?title=User:G.V.Kolbe&amp;action=edit&amp;redlink=1" class="new" title="User:G.V.Kolbe (page does not exist)">G.V.Kolbe</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>