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Publications on the lichens of Alaska go back 182 years, but a modern, comprehensive review of literature on the diversity of Alaskan lichens has been lacking. The authors present a compendium of 2126 accepted taxa fully referenced with published reports from Alaska and their exact localities.

Of these 2126 taxa, 1827 are lichen fungi, 277 are lichen-associated fungi and 22 are putatively saprotrophic fungi usually treated in lichenological studies. Nearly half of all species have been first reported since 1997. A total of 1594 names are treated as synonyms or misapplications, and 140 further taxa are excluded as erroneous or doubtful.