For Cystopteridaceae
Christenhusz, M.J.M., X.-C. Zhang, and H. Schneider. 2011. A linear sequence of extant families and genera of lycophytes and ferns. Phytotaxa 19: 7–54.
Rothfels, C.J., A.K. Johnson, M.D. Windham, and K.M. Pryer. 2014. Low-copy nuclear data confirm rampant allopolyploidy in the Cystopteridaceae (Polypodiales). Taxon 63: 1026-1036.
Cite as...