![](http://www.alamy.com/thumbs/6/13070A20-90EC-43A8-A177-C6FC1307E2B2/2PYP11P.jpg)
Pyrenula macrospora is common crustose lichen of smooth-barked trees. It has been recorded in Europe and Asia.
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Photo credit: © Peter Martin Rhind / Alamy / Afripics
License: Royalty Free
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Keywords: atlantic, common, crustose, lichen, macrospora, north, pyrenula, pyrenulaceae, recorded, recored, smooth-barked, snowdonia, trees, wales