1. Methods of phylogeny reconstruction. The central focus of the Polypodiaceae Project is understanding of the evolutionary history of this taxon. We are developing discussions about this much disputed issue as part of the process of establishing systematic relationships both between species of inferred monophyletic groups, and also between (groups of) genera. P. Hovenkamp is dealing with an a priori approach to phylogenetic reconstruction of the genus Pyrrosia (51 species) whereas M.C. Roos is applying in cooperation with Dr. M.Zandee an a posteriori method in reconstructing the phylogeny of the drynarioids (31 species).