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Buellia erubescens Arnold  
Family: Caliciaceae
[Buellia stillingiana J. Steiner,  more]
Buellia erubescens image
Stephen Sharnoff  
Buellia erubescens image
Stephen Sharnoff  
Buellia erubescens image
Lucy Taylor  
Buellia erubescens image
Stephen Sharnoff