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Physcia americana G. Merr.  
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Family: Physciaceae
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Stephen Sharnoff  
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Troy McMullin  
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Troy McMullin  
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Troy McMullin  
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Andrew Khitsun  
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Gary Perlmutter  
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Stephen Sharnoff  
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Samuel Brinker  
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Andrew Khitsun  
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Lynda Miller  
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Andrew Khitsun  
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Andrew Khitsun  
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Andrew Khitsun  
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Andrew Khitsun  
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Andrew Khitsun  
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