 Additionally, studies on spores and size of the mature plant prove that "Phlebodium" contrasts severely from the rest of its family, providing the creation of the genera.The division of genera within the Polypodiaceae is fairly gray, considering that systematically, gametophytes differ only very slightly amongst different genera.Members of the family Polypodiaceae are most closely related to the Davalliaceae, with further relationships noted to Oleandraceae, Tectariaceae, and the Lomariopsidaceae within the order Polypodiales, which contains 80% of today’s ferns species (see additional page for picture).