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Cryptogrammaceae
Cryptogramma crispa
Scientific classification
Kingdom:	Plantae
Division:	Pteridophyta
Class:	Pteridopsida
Order:	Pteridales
Family:	Cryptogrammaceae Pic. Serm. 1963
Genera
Coniogramme (20–40 spp.) Cryptogramma (9 spp.) Llavea (monotypic)

Cryptogrammaceae is a small family of ferns, which appears to be somewhat isolated from the rest of the Pteridales. This family forms a natural clade that is the most basal to the order. Of these, Llavea is the most basal within the clade.

Based on phylogenetic research, Smith et al. (2006) included Cryptogrammaceae as part of the family Pteridaceae and Christenhusz et al. (2011) listed its three genera in Cryptogrammoideae S.Linds. 2009, one of five subfamilies of Pteridaceae.

References

1. Eric Schuettpelz; Harald Schneider; Layne Huiet; Michael D. Windham; Kathleen M. Pryer (2007). "A molecular phylogeny of the fern family Pteridaceae: assessing overall relationships and the affinities of previously unsampled genera" (PDF). Molecular Phylogenetics and Evolution. 44 (3): 1172–1185. doi:10.1016/j.ympev.2007.04.011. PMID 17570688. Archived from the original (PDF) on 2008-08-20. {{cite journal}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
2. Smith et al. (2006) A classification for extant ferns Archived February 26, 2008, at the Wayback Machine Taxon 55(3) 705–731 (Aug 2006)
3. Christenhusz et al. (2011) A linear sequence of extant families and genera of lycophytes and ferns Phytotaxa 19: 7-54. (18 Feb. 2011)

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