I found a similar critter at Stouds Run.

I’m not even sure this is a Lichen.


Proposed Names

-28% (2)
Recognized by sight
17% (2)
Used references:
These are similar to those posted by kitparrish.
-56% (1)
Recognized by sight: Long white discrete rhizines and bullate upper surface are typical of membranacea, although there might be additional such species out east…
85% (1)
Recognized by sight: Seems P. membranacea is strictly western. Recent field experience suggests to me that P. praetextata is by far the most common lichen in moist woods and fields in Appalachia. The two can be nearly indistinguishable, especially in fertile specimens (P. praetextata often has tiny lobules along cracks and margins in the interior, in which case it is easier to identify).

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= Observer’s choice
= Current consensus


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