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Parmelia sulcata
Net-marked parmelia (Parmelia sulcata), or Shield lichen, is a foliose lichen in the family Parmeliaceae. It is very tolerant of pollution and has a cosmopolitan distribution, making it one of the most common lichens. It harbours a unicellular Trebouxia green algal symbiont.Wikipedia
Found on the boardwalk at the Nisqually wetands.
Spotted on Apr 24, 2017
Submitted on Apr 25, 2017
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