Crustose and placodioid lichens 
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Protothelenella sphinctrinoides
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Pseudosagedia aenea
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Psilolechia lucida
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Psora decipiens
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Album: Protothelenella
Contains: 2 items.
Album: Pseudosagedia
Contains: 3 items.
Album: Psilolechia
Contains: 17 items.
Album: Psora
Contains: 22 items.
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Psoroma hypnorum
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Pycnora leucococca
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Pyrenula nitida
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Pyrrhospora rubiginans
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Album: Psoroma
Contains: 5 items.
Album: Pycnora
Contains: 13 items.
Album: Pyrenula
Contains: 12 items.
Album: Pyrrhospora
Contains: 21 items.