Three species of beard lichen from the same area, left to right:
<ul><li><i><a href="//commons.wikimedia.org/w/index.php?title=Usnea_scabrata&amp;action=edit&amp;redlink=1" class="new" title="Usnea scabrata (page does not exist)">Usnea scabrata</a></i></li>
<li><i><a href="//commons.wikimedia.org/wiki/Alectoria_sarmentosa" title="Alectoria sarmentosa">Alectoria sarmentosa</a></i></li>
<li><i><a href="//commons.wikimedia.org/w/index.php?title=Ramalina_thrausta&amp;action=edit&amp;redlink=1" class="new" title="Ramalina thrausta (page does not exist)">Ramalina thrausta</a></i></li></ul>
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/7147684@N03">Jason Hollinger</a>
CC BY 2.0
<a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/7147684@N03/5084676020">Beard Comparison</a>