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Lichens, Peltigera
Lichens, Parmelia caperata on black spruce, near view
Lichens, Parmelia caperata on black spruce
Lichens on West side of Bur oak at Agassiz dunes, Fertile, Minnesota
Lichens on West side of Bur oak at Agassiz dunes, Fertile, Minnesota
Lichens on twig of Larix laricina, several species
Lichens on twig of Larix laricina, several species
Lichens on twig of Larix laricina, several species
Lichens on twig of Larix laricina, close up
Lichens on tree trunk