At the present part of our Pollen Catalogue, it is studied the pollen grain morphology of 140 species of Myrtaceae from Santa Catarina State. The study of these pollen grains allow us the composition of pollinic groups according to the characteristic of the apertures and the structure of the exines. It was not possible to differentiate neither species nor genera according to the pollen grain morphology. The pollinic groups ar not homogeneous in relation to the studied genera and the ecological occurrence of the species.