We revised the collections of foliicolous lichens made by the Brazilian mycologist Augusto Chaves Batista and his coworkers in Pernambuco state, Brazil. The study was divided into three parts: (1) compilation and nomenclatural revision of the names published and used by Batista et al.; (2) taxonomic revision of the specimens determined by Batista et al.; (3) identification of specimens present in the collections but not registered by Batista et al. The studied material comprises 474 collections, with 1,130 specimens identified by Batista and his group, to which these authors applied 55 generic and 159 specific names. The nomenclatural revision presented here showed that these correspond to 36 valid generic and 101 valid specific names, besides 11 nomina dubia. However, the taxonomic revision of these 1,130 specimens revealed that no more than 37 species in 16 genera were correctly identified, whereas the remaining names represent incorrect determinations. In the present study, we identified an additional 1,670 specimens not recognized before by Batista et al. As a final result of this investigation, we revised 2.800 specimens which actually belong to 37 genera and 134 species of foliicolous lichens and/or lichenicolous fungi.
foliicolous lichens; Brazil; Northeast; Chaves Batista