- ↑ Korall & al. 2007.
- ↑ Judd 2008.
- Hogan, C. Michael. 2010. "Fern." Encyclopedia of Earth. Vasingtoniae: National council for Science and the Environment.
- Judd, W.S., C.S. Campbell, E.A. Kellogg, P.F. Stevens, and M.J. Donoghue (Eds.) 2008. Plant Systematics: A Phylogenetic Approach, Third Edition. Sinauer Associates, Sunderland, Massachusetts, USA.
- Korall, Petra; David S. Conant, Jordan S. Metzgar, Harald Schneider, Kathleen M. Pryer: "A Molecular phylogeny of scaly tree ferns (Cyatheaceae)." American Journal of Botany 94(5): (2007) 873–886
- Large, M. F., et J. E. Braggins. 2004. Tree Ferns. Timber Press.
- Pryer, K. M., A. R. Smith, et J. E. Skog. 1995. Phylogenetic relationships of extant ferns based on evidence from morphology and rbcL sequences. American Fern Journal 85: 205–282.
- Smith, A. R., K. M. Pryer, E. Schuettpelz, P. Korall, H. Schneider, et P. G. Wolf. 2006. A classification for extant ferns. Taxonomy 55(3): 705–731.