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159 button and allied lichens species
Pyxine cocoes
Pyxine coralligera
Pyxine eschweileri
Pyxine petricola
Pyxine retirugella
Buellia abstracta
Buellia tesserata
Buellia sequax
Buellia circumpallida
Acolium chloroconium
Acolium sessile
Buellia fosteri
Tetramelas insignis
Calicium carolinianum
Calicium trachylioides
Tetramelas geophilus
Buellia leptocline
Buellia triseptata
Acolium karelicum
Tetramelas pulverulentus
Dirinaria subconfluens
Pyxine albovirens
Dimelaena californica
Dimelaena radiata
Dimelaena thysanota
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