↑P. Koral et al. 2006Архівавана 27 верасня 2007. Petra Korall, Kathleen M. Pryer, Jordan S. Metzgar, Harald Schneider, David S. Conant: "Tree ferns: Monophyletic groups and their relationships as revealed by four protein-coding plastid loci." Molecular Phylogenetics and Evolution39 (2006) 830–845
↑P. Koral et al. 2007Архівавана 15 чэрвеня 2016. Petra Korall, David S. Conant, Jordan S. Metzgar, Harald Schneider, Kathleen M. Pryer: "A Molecular phylogeny of scaly tree ferns (Cyatheaceae)." American Journal of Botany94(5): (2007) 873–886