A floristic and taxonomic study of the family Vittariaceae in southeastern Brazil is presented. Seven of the ten genera, which comprise this family, are American. Five genera and nine species occur in the studied region: Anetium Splitg. and Hecistopteris J. Sm. with one species each; Polytaenium Desv. with three species; Radiovittaria (Benedict) E.H. Crane and Vittaria Sm. with two species each. Identification keys for genera and species are presented. The studied species are described and illustrated, and taxonomic and ecological commentaries were included.
diversity; ferns; floristics; southeastern Brazil; Vittariaceae
