(Polypodiaceae), a new monotypic fern genus segregated from Polypodium.

Polypodiaceae is one of the most diverse and abundant families of ferns in tropical and subtropical forests. Despite multiple studies investigating its phylogeny and taxonomy, several generic boundaries within the family still need clarification. One of the most problematic circumscriptions is that of L., and one species that still contributes to this uncertainty is Hook. The main goal of this study was to use molecular and morphological data to clarify the relationships of inside the polygrammoid clade. Sequences from three plastid regions (cpDNA - L, 4 and 4-S IGS) from fifty species belonging to thirty-two genera of Polypodiaceae were analyzed using maximum likelihood and Bayesian inference. constitutes an isolated lineage among the neotropical polygrammoid ferns, close to and the grammitids, and is recognized here in a new genus. It can be distinguished by its entire leaves with free veins and peltate, pedicellate, lanceolate paraphyses. A new combination, , is proposed and a new taxonomic treatment is presented; its conservation status was assessed using IUCN Red List Categories and Criteria.