Taxonomic survey of representatives of families Golenkiniaceae and Micractiniaceae in the Parque Estadual das Fontes do Ipiranga aquatic systems. Two genera of Golenkiniaceae (Golenkinia and Polyedriopsis) were identified, each with a single species, and two other genera (Golenkiniopsis and Micractinium) of Micractiniaceae, being three of Micractinium and two of Golenkiniopsis. Micractinium was the best represented genus taxonomically, with three species: M. bornhemiense,M. crassisetum and M. pusillum. Garças Pond was the system that presented the highest number of species, including representatives of all species presently identified.
Brazil; Chlorophyceae; floristic survey
