Taxonomic survey of representatives of families Dinococcaceae, Gymnodoniaceae and Hemidiniaceae in the Parque Estadual das Fontes do Ipiranga, São Paulo, Brazil. Five genera (Amphidinium, Dinococcus, Gymnodinium, Hemidinium and Katodinium) and fourteen species (four of Amphidinium, four of Hemidinium, three of Gymnodinium, two of Katodinium and one of Dinococcus) and two varieties that are not the typical of their respective species were identified. Amphidinium kesslitzii Schiller var. kesslitzii, Gymnodinium fuscum (Ehrenberg) Stein and Hemidinium brasiliense C. Bicudo & Skvortzov occurred in two localities each, whereas all other species in a single locality each.
Amphidinium; Brazil; Dinococcus; dinoflagellates; Gymnodinium; Hemidinium; Katodinium
