Most observed native Trapeliales
8 species, native to the US, by observations.
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Plate-Like Stone Lichen
Trapelia placodioides
1,240 observations
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Granular Mottled-disk Lichen
Trapeliopsis granulosa
822 observations
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Board Lichen
Trapeliopsis flexuosa
680 observations
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Stiff Tar-spot Lichen
Placynthiella icmalea
130 observations
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Pear Tar-spot Lichen
Placynthiella uliginosa
82 observations
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Tar Spot
Placynthiella oligotropha
66 observations
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Trapeliopsis Lichen
Trapeliopsis viridescens
24 observations
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Trapelia obtegens
10 observations