The inventory of species of Hymenophyllum (Hymenophyllaceae) occurring in state of Espírito Santo is presented. The taxonomic treatment includes description, comments, images and key of species of Hymenophyllum occurring in state of Espírito Santo, as well as, a key for Hymenophyllaceae genera occurring in study area and Brazil. The geographical distribution pattern and ecological notes also are included. A total of 15 species belonged to five subgenera were recorded. The species are wide distribution in Atlantic Forest biome, in ombrophiles forest and nebular forest, with exception of Hymenophyllum caparaoense which is endemic of Caparaó National Park.
biodiversity; filices; floristic; Atlantic Forest; ferns