Dotted Stem Bolete <a href="https://en.wikipedia.org/wiki/Boletus_erythropus" class="extiw" title="en:Boletus erythropus"><i>Boletus erythropus</i></a>. Yellow color become dark blue quickly on cutting (after few seconds). Ukraine.
<a href="//commons.wikimedia.org/wiki/User:George_Chernilevsky" title="User:George Chernilevsky">George Chernilevsky</a>
2010-07-10
<span class="int-own-work" lang="en">Own work</span>