Collection location: Forest near Elgin St., Pembroke, Ontario, Canada [Click for map]
Notes: Found on several birch trees along with another lichen species (obs. 13058).
The trees were at the north edge of a stand of mixed birch and jack pine. Birch elsewhere in the area, including with eastern or southern exposures, tended to lack these lichen encrustations.
The juxtaposition of similar-morphology yellow and blue lichens is striking, particularly in the first photo.
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