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Letharia columbiana (Nutt.) J. W. Thomson  
Family: Parmeliaceae
[Letharia californica (Lev.) Hue]
Letharia columbiana image
Stephen Sharnoff  
Letharia columbiana image
Stephen Sharnoff  
Letharia columbiana image
Stephen Sharnoff  
Letharia columbiana image
Stephen Sharnoff