Pollen grains form 5 species of 2 genera of the family Elaeocarpaceae and from 4 species of 2 genera of the family Tiliaceae, from southern Brazil, have been studied. According to the pollen grain morphology, the two families are different as well as the studied genera. A clear separation of the four species of the genus Sloanea at palynologic basis could rot be achieved and only S. monosperma shows characteristic aspects. In the family Tiliaceae it was possible to stablish a exact palynologic difference between its species.