<p>Scientific Name: <i>Flavopunctelia soredica</i> (Nyl.) Hale
Common Name: Powder-Edged Speckled Greenshield
Certainty: positive (<a rel="nofollow" class="external text" href="http://bornnaturalist.org/notes/20070221#24">notes</a>)
Location: Northwestern California; Six Rivers NF
Date: 20070221
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Beautiful labriform (lip-shaped) soralia, at 30x.  The "powder" is made up of minute particles of lichen, containing both the fungal and algal symbionts.  These disperse by wind, water, or animal, allowing it to propagate asexually.
<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@N03/989883451/">Powder-Edged Speckled Greenshield</a>
</p>
<ul><li>Uploaded by <a href="//commons.wikimedia.org/wiki/User:Amada44" title="User:Amada44">Amada44</a></li></ul>