Water and submerged mixed litter samples were collected from June 2011 to April 2012 to study the diversity of zoosporic organisms (Blastocladiomycota, Chytridiomycota, and Oomycota) from the stream Pirarungaua located in Parque Estadual das Fontes do Ipiranga (PEFI), São Paulo, São Paulo State, Brazil. In the laboratory, they were placed in Petri dishes and processed by the multiple baiting technique using cellulosic, queratinic, and chitinic baits. Forty-two taxa have been isolated and identified, 27 of them being at species level. Seven are new records for Parque Estadual das Fontes do Ipiranga: Cladochytrium setigerum Karling, Diplophlyctis intestina (Schenk) J. Schröt, Myzocytiopsis humana (Karling) M. W. Dick, Nowakowskiella elongata Karling, Nowakowskiella multispora Karling, Plectospira myriandra Drechsler, and Pythium graminicola Subramanian, which are described, commented and illustrated. Myzocytiopsis humana is reported for the first time in Brazil.
Atlantic rainforest; chytrids; oomycetes; zoosporic fungi
