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Umbilicaria rigida (Du Rietz) Frey  
Include species within checklist Encyclopedia of Life...
Family: Umbilicariaceae
[Actinogyra rigida (Du Rietz) Llano,  more]
Umbilicaria rigida image
Stephen Sharnoff  
Umbilicaria rigida image
Lucy Taylor  
Umbilicaria rigida image
Stephen Sharnoff  
Umbilicaria rigida image
Stephen Sharnoff  
Umbilicaria rigida image
Umbilicaria rigida image
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Umbilicaria rigida image