In this paper we present the data of the floristic survey of the family Cyatheaceae from Parque Estadual das Fontes do Ipiranga (PEFI). The family is represented in the area by two genera (Alsophila and Cyathea) and five species(Alsophila setosa Kaulf., A. sternbergii (Sternb.) D.S. Conant, Cyathea atrovirens (Langsd. & Fisch.) Domin, C. corcovadensis (Raddi) Domin, and C. delgadii Sternb.). Identification keys for genera and species, as well as descriptions, geographical distribution, comments, and illustrations for some species are presented.
Alsophila; Cyathea; taxonomy; tree fern
