This is the base of a fruiting body of Clavulina coralloides from Germany (Thuringia). The picture was taken by a smartphone, the fungus was under a stereo microscope. It was collected by C. Manz in a limestone coniferous forest near Eisfeld for the mycology module at Goethe-Universität Frankfurt in the AG of Meike Piepenbring
<a href="//commons.wikimedia.org/wiki/User:Walnussb%C3%A4umchen" title="User:Walnussbäumchen">Stephan Kleinfelder</a>
<span class="int-own-work" lang="en">Own work</span>