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Arthonia atra
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Family: Arthoniaceae
[Graphis atra (Pers.) Spreng., more]  National Museum of Natural History Collections |
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 National Museum of Natural History Collections  National Museum of Natural History Collections  National Museum ofNatural History Collections  National Museum of Natural History Collections  National Museum of Natural History Collections  National Museum of Natural History Collections  National Museum ofNatural History Collections                                                                                    |
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