List of fern families

Below are lists of extant fern families and subfamilies using the classification scheme proposed by the Pteridophyte Phylogeny Group in 2016 (PPG I).[1] The scheme is based on molecular phylogenetic studies, and also draws on earlier classifications,[1] particularly those by Smith et al. (2006),[2] Chase and Reveal (2009),[3] and Christenhusz et al. (2011).[4] It rejects the very broad circumscription of some families used by Christenhusz and Chase (2014), whose Aspleniaceae corresponds to the entire suborder Aspleniineae of PPG I.[1][5]

  1. ^ a b c Cite error: The named reference PPGI was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Smith-2006 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Chase-2009 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Christenhusz-2011b was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Christenhusz-2014 was invoked but never defined (see the help page).