Common bird's nest fungus (<i>Crucibulum laeve</i>). Vieux-Sautour, Arrondissement of Philippeville, Wallonia.
Gilles San Martin
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/sanmartin/49949798438/">https://www.flickr.com/photos/sanmartin/49949798438/</a>