Umbilicaria polyphylla (L.) Baumg.  
Family: Umbilicariaceae
[Gyromium polyphyllum (L.) Wahlenb.,  more]
Umbilicaria polyphylla image
Stephen Sharnoff  
Umbilicaria polyphylla image
Lucy Taylor  
Umbilicaria polyphylla image
Stephen Sharnoff  
Umbilicaria polyphylla image
Stephen Sharnoff  
Umbilicaria polyphylla image
Stephen Sharnoff