An important note as to the state of our knowledge of the fern flora is the
scarcity of collections for ferns that are considered to be common. A more
complete set of data on the natural history of ferns is also needed, especially
those verifying and updating information on gametophytes, such as recent
work within a phylogenetic framework in Pteridaceae (e.g. Gabriel y Gala´n,
2011; Johnson et al., 2012).