<p>Scientific Name: <i>Graphis scripta</i> (L.) Ach.
Common Name: Common Script Lichen
Certainty: positive (<a rel="nofollow" class="external text" href="http://bornnaturalist.org/notes/20060630#13">notes</a>)
Location: Southern Appalachians; Smokies; CabinCove
Date: 20060630
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The reddish coloration seem to be a fairly common phenomenon -- is it some sort of mold or parasite??
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/7147684@N03">Jason Hollinger</a>
CC BY 2.0
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/7147684@N03/1046000140/">Common Script Lichen</a>
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<ul><li>Uploaded by <a href="//commons.wikimedia.org/wiki/User:Amada44" title="User:Amada44">Amada44</a></li></ul>