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Lichens on rocks 550 feet from foot of Great Glacier
Lichens on rocks 450 feet from foot of Great Glacier
Lichens on Northwest side of Bur oak at Agassiz dunes, Fertile, Minnesota
Lichens on Northwest side of Bur oak at Agassiz dunes, Fertile, Minnesota
Lichens on Northwest side of Bur oak at Agassiz dunes, Fertile, Minnesota
Lichens on Northwest side of Bur oak at Agassiz dunes, Fertile, Minnesota
Lichens on log, foliose
Lichens on fallen log, close-up, Cladonia squamosa
Lichens on fallen log, Cladonia palamaea
Lichens on Cereus atacama stem