Campyloneurum belongs to the family Polypodiaceae, which is hardly characterized by a few morphological characters. Presl segregated the gender Campyloneurum from Polypodium L. in 1836, and recognized 11 species. The objective of this research is to accomplish a floristic survey of Campyloneurum species in São Paulo State. Were realized fieldwork and an extension revision of collections from the main herbaria in the State. Based on morphological characters nine species were recognized and also are presented an identification key, descriptions, comments, geographical distribution maps, and illustrations for all the studied species.
diversity; ferns; flora; Polypodiopsida
