Porpidia contraponenda cfr.
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Porpidia contraponenda cfr. 1 On rock. From near Mt. Baker, Washington. |
Porpidia contraponenda cfr. 2 On coastal rock. From the north coast of California. |
Porpidia contraponenda cfr. 3 On coastal rock. From the north coast of California. |
Porpidia contraponenda cfr. 4 On coastal rock. From the north coast of California. |
Porpidia contraponenda cfr. 5 (formerly called Porpidia diversa) On rock. From the North Shore of Lake Superior, Ontario. |