Most observed native cobblestone lichens
10 species, native to the US, by observations.
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Brown Cobblestone Lichen
Acarospora fuscata
3,626 observations
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Hoary Cobblestone Lichen
Acarospora strigata
2,371 observations
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Soil Paint Lichen
Acarospora schleicheri
535 observations
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Common Coal Dust Lichen
Acarospora privigna
156 observations
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Rimmed Cobblestone Lichen
Acarospora glaucocarpa
130 observations
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Dusty Cobblestone Lichen
Acarospora americana
72 observations
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Acarospora chrysops
36 observations
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Piedmont Cobblestone
Acarospora piedmontensis
33 observations
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Cracked Lichen
Acarospora veronensis
31 observations
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Bagel Cobblestone
Acarospora janae
8 observations