<i><a href="//commons.wikimedia.org/wiki/Rhytisma_acerinum" title="Rhytisma acerinum">Rhytisma acerinum</a></i> on <i><a href="//commons.wikimedia.org/wiki/Acer_pseudoplatanus" title="Acer pseudoplatanus">Acer pseudoplatanus</a></i> leaves, Family: Rhytismataceae, Location: Germany, Biberach
<a href="//commons.wikimedia.org/wiki/User:Holleday" title="User:Holleday">Holger Krisp</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>