Taxonomic survey of representatives of family Scenedesmaceae (Chlorophyceae) in the Parque Estadual das Fontes do Ipiranga, São Paulo, Brazil. Twelve genera (Crucigenia, Crucigeniella, Desmodesmus, Didymogenes, Dimorphococcus, Pseudodidymocystis, Pseudotetrastrum, Scenedesmus, Tetrachlorella, Tetrallantos, Tetrastrum and Westella), 47 species and 11 varieties that are not the typical of their respective species were identified. Genus represented by the greatest number of taxa was Desmodesmus, with 16 species and seven varieties that are not typical of their respective species. Followed Scenedesmus with 14 species and four non-typical varieties. Species that occurred in the greatest number of systems were: Desmodesmus communis, D. denticulatus var. linearis, D. intermedius var. acutispinus, Pseudodidymocystis fina, Scenedesmus obliquus var. dimorphus, S. acunae and S. obtusus, that occurred in three localities each.
Brazil; floristic survey; Scenedesmaceae; urban reservoir
