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Cryptogrammoideae
Cryptogramma crispa
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	Polypodiophyta
Class:	Polypodiopsida
Order:	Polypodiales
Family:	Pteridaceae
Subfamily:	Cryptogrammoideae S.Linds.
Genera
Coniogramme Fée Cryptogramma R.Br. Llavea Lag.
Synonyms
Cryptogrammaceae Pic. Serm.

Cryptogrammoideae is a subfamily of ferns in the family Pteridaceae. The subfamily contains three genera and about 23 species.

Taxonomy

In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), Cryptogrammoideae is one of the five subfamilies of the family Pteridaceae. Although the subfamily Cryptogrammoideae is similar to the family Cryptogrammaceae proposed by Pichi Sermolli in 1963, that group contained the morphologically similar genus Onychium (now in the subfamily Pteridoideae) instead of the less morphologically similar genus Coniogramme. In 2006, Smith et al. included Cryptogrammaceae as part of the family Pteridaceae, and in 2011, Christenhusz et al. listed its three genera in Cryptogrammoideae, one of five subfamilies of Pteridaceae, a placement used in PPG I.

The following diagram shows a likely phylogenic relationship between the three Cryptogrammoideae genera and the other Pteridaceae subfamilies.

References

1. ^ Christenhusz, Maarten J. M.; Zhang, Xian-Chun; Schneider, Harald (18 February 2011). "A linear sequence of extant families and genera of lycophytes and ferns" (PDF). Phytotaxa. 19: 7–54. doi:10.11646/phytotaxa.19.1.2. ISSN 1179-3163.
2. ^ PPG I (2016). "A community-derived classification for extant lycophytes and ferns". Journal of Systematics and Evolution. 54 (6): 563–603. doi:10.1111/jse.12229. S2CID 39980610.
3. ^ Schuettpelz et al. 2007 Archived August 20, 2008, at the Wayback Machine Eric Schuettpelz, Harald Schneider, Layne Huiet, Michael D. Windham, Kathleen M. Pryer: "A molecular phylogeny of the fern family Pteridaceae: Assessing overall relationships and the affinities of previously unsampled genera." Molecular Phylogenetics and Evolution 44 1172–1185 (2007)
4. Smith et al. (2006) A classification for extant ferns Archived February 26, 2008, at the Wayback Machine Taxon 55(3) 705–731 (Aug 2006)
5. Schuettpelz & Pryer, 2008 Eric Schuettpelz & Kathleen M. Pryer: "Ch. 15. Fern phylogeny" in Biology and Evolution of Ferns and Lycophytes], ed. Tom A. Ranker and Christopher H. Haufler. Cambridge University Press (2008)

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