A floristic survey was carried out of the pteridophytes from Jacupiranga State Park, located in the municipal districts of Barra do Turvo, Cajati, Cananéia, Eldorado, Iporanga and Jacupiranga, in southern São Paulo state. Collecting was done in March and April/2005; voucher specimens are deposited in the BHCB, ESA, SPSF and UEC herbaria. Two hundred and twelve taxa (207 species, one subspecies and four varieties) distributed in 24 families and 65 genera were recorded. The most representative families were Thelypteridaceae with 23 species and three varieties and Polypodiaceae with 23 species. The richest genera were Thelypteris with 22 species and three varieties and Asplenium with 18 species and one variety. As regards life form, of the 212 taxa, 122 are terrestrial, 65 epiphytes, 17 lithophytes, three creepers and five with more than one habitat. The species Diplazium rieddelianum Kunze, Stigmatopteris ulei (Christ) Sehnem and Thelypteris paranaensis Salino are reported here for the first time in São Paulo state.
Atlantic Forest; floristic; Jacupiranga; pteridophytes; Ribeira Valley
