In continuation of the first part of the Catalogue of Arboreal Pollen Grains of the South Regions of Brazil, now we describe the MONIMIACEAE and DILLENIACEAE. The first belong phyllogenetically to the group of LAURACEAE and ANNONACEAE, proved by the morphological aspect of their pollen grains. The DILLENIACEAE belong to a parallel group, but also derive, like the antecedents, from primitive MAGNOLIACEAE. Their pollen grains are very different from all families, till now examined. Between the MONIMIACEAE of the rain-forest of the south region of Brazil, we found two morphological types of pollen grains: the first by Hennecartia omphalandra: round pollen grains, with a granulated superficies, the second by Mollinedia (all examined species): round pollen grains, also with a granulated superficies, which shows a sub-equatorial band without adornments. We did not observed any furrow in the two types. The Dillemiaceae were also divided into two groups: Davilla angustifolia, Doliocarpus lasiogyne and Tetracera oblongata, whose pollen grains possess each one three colpori, while Davilla rugosa is provided with four pori. All genera have a reticulated superficies.