Criptógamos do Parque Estadual das Fontes do Ipiranga, S？o Paulo, SP, Brasil: Algas, 33: Chlorophyceae (famílias Palmellaceae, Hormotilaceae e Dictyosphaeriaceae)

floristic survey of families palmellaceae, hormotilaceae, and dictyosphaeriaceae (chlorophyceae) from parque estadual das fontes do ipiranga, s？o paulo, s？o paulo state, southeast brazil. eight genera, 9 species and 1 variety that is the typical of its respective species were identified. dictyosphaeriaceae is the family taxonomically better represented in the area, represented by 4 genera and 6 species followed by hormotilacae and palmellaceae with 2 genera and 2 species each family. botryococcus and dictyosphaerium are the genera with the largest number of species (2) in the area, and dictyosphaerium pulchellum the best geographically represented taxon, occurring in 5 localities, followed by dimorphococcus lunatus in 3 localities, botryococcus braunii and sphaerocystis schroeteri in 2 localities; and b. protuberans var. protuberans, hormotilopsis gelatinosa, westella botryoides, ecballocystis fritschii, dictyosphaerium ehrenbergianum n？geli and palmella aurantia the least represented ones, occurring in a single locality each.