Abstract
The pollen grains of 12 species of Nyctaginaceae, Phytolaccaceae, Polygonaceae and Cactaceae (Caryophyllales) families will be studied; these species are native to remaining forest fragments in the State of São Paulo. This study aims to carry out the characterization of the pollen grains, which may help in the taxonomy of these families, providing subsidies for the conservation of the bio…