Polypodiaceae Bercht & J. Presl (Polypodiopsida) no Parque Estadual do Itacolomi, MG, Brasil

Resumo

A floristic survey of the Polypodiaceae in the Parque Estadual do Itacolomi is presented. This park is located in the southern limit of the Espinhaço Range, between the municipalities of Ouro Preto and Mariana (20o22’30’’ - 20o30’00’’ S and 043o32’30’’ - 043o22’30’’ W), between 660 m and 1,760 m of altitude, in the state of Minas Gerais, Brazil. The vegetation is composed mainly of rocky fields and fragments of seasonal semideciduous montane forest. Polypodiaceae is represented by 15 genera and 28 species at the park. The genera Polypodium and Serpocaulon are the most representative, with three species each. Of the nine species endemic of Brazil and recorded in the park, seven are endemic of the southeastern and southern regions of the country, and two of the Espinhaço range: Ceradenia warmingii (C.Chr.) Labiak (knwn only from Minas Gerais) and Polypodium minarum Weath. (known from the states of Bahia and Minas Gerais). Descriptions, comments, illustrations and keys for the identification of all the studied taxa are presented.