Cetraria islandica (L.) Ach.  
Family: Parmeliaceae
Cetraria islandica image
Stephen Sharnoff  
Cetraria islandica image
Lucy Taylor  
Cetraria islandica image
Stephen Sharnoff  
Cetraria islandica image
Stephen Sharnoff  
Cetraria islandica image
Stephen Sharnoff  
Cetraria islandica image
Stephen Sharnoff  
Cetraria islandica image
Stephen Sharnoff  
Cetraria islandica image
Stephen Sharnoff