Lecanora pseudargentata, L. rhodi, and L. stenotropa are reported new for North America, and three other poorly known North American lichens, Aspicilia moenium, L. minutella, and L. ochraceorubescens, are also discussed. Lecanora rhodi and L. ochraceorubescens cannot be confused with any other lichens in North America, so the limited number of collections of these species probably indicate that they are uncommon or rare. The spotty specimen distributions of A. moenium, L. minutella, L. pseudargentata, and L. stenotropa, however, are probably the result of misidentification or oversight. An informed search of both herbaria and the field is recommended to improve our understanding of their geographic ranges.
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Vol. 104 • No. 2