Language: English
A total of 456 species of corticolous crustose and microfoliose lichens are reported from the states of Rio Grande do Norte, Paraiba, Pernambuco, Alagoas and Sergipe in northeastern Brazil, based on more than 2,700 collections made at 22 localities representing the three major vegetation types, coastal Atlantic rainforest or Zona da Mata (Mata Atlantica), Brejos de Altitude, and Caatinga, as well as the transitional Agreste region.
Most of the listed species are new records for the study area; several are new to Brazil, and some are new to the Neotropics. The total number of lichens known from the study area, including previously reported macrolichen and foliicolous lichens is now estimated to be more than 700.