| systematyka_ref = <ref name=ruggiero>{{Cytuj pismo | autor = Michael A. Ruggiero, Dennis P. Gordon, Thomas M. Orrell, Nicolas Bailly, Thierry Bourgoin, Richard C. Brusca, Thomas Cavalier-Smith, Michael D. Guiry, Paul M. Kirk | tytuł = A Higher Level Classification of All Living Organisms | czasopismo = PLOS ONE | wolumin = 10(6): e0130114 | data = 2015 | urldostępu = https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0119248 | doi = 10.1371/journal.pone.01192482021-02-28}}</ref><ref name=ppgI>{{Cytuj pismo | autor = The Pteridophyte Phylogeny Group | tytuł = A community-derived classification for extant lycophytes and ferns | czasopismo = Journal of Systematics and Evolution | wolumin = 54 (6) | strony = 563–603 | data = 2016 | doi = 10.1111/jse.12229}}</ref>
