Lytoneuron (Pteridaceae) of Minas Gerais and Espírito Santo, Brazil, including three new combinations and descriptions of two new taxa

In the Brazilian states of Minas Gerais and Espírito Santo, 11 species of Lytoneuron occur, of which one is new to science, L. poseidonii. Besides the 11 species, we also recognize two varieties, of which one is new, L. columbinumvar.caparaoense. We also make three new combinations: L. columbinum,L. microphyllum, and L. ornithopusvar. pygmaeum. Three species are widespread in South America, whereas the remaining taxa are endemic to the mountainous regions of southeastern Brazil. We present comprehensive descriptions and illustrations for all taxa, as well as an updated key and list of specimens.