A comprehensive lichenological survey was conducted on three Azorean islands: Faial, São Miguel, and Terceira, resulting in the documentation of 155 lichens and lichenicolous fungi species, with a total of 406 observations. Among these, 33 species are reported for the first time in the Archipelago, with four species representing new records for Europe (Lecanora subimmersa, Lecanora thysanota, Pseudosagedia cestrensis, and Traponora asterella). Additionally, 15 species and varieties are new to Portugal, including notable taxa such as Caloplaca interna, Lecanora gisleriana, Lecanora handelii, Variospora dolomiticola, and Xanthocarpia diffusa.
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