Pteridaceae
| Pteridaceae | |
|---|---|
 |
|
| Pityrogramma austroamericana | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Pteridophyta |
| Class: | Polypodiopsida/Pteridopsida |
| Order: | Polypodiales |
| Family: |
Pteridaceae E.D.M.Kirchn. |
| Subfamilies | |
| Synonyms | |
|
Acrostichaceae A.B.Frank |
|
Acrostichaceae A.B.Frank
Actiniopteridaceae Pic. Serm.
Adiantaceae Newman nom. cons.
Anopteraceae Doweld
Antrophyaceae Ching
Ceratopteridaceae Underw.
Cheilanthaceae M.P.Nayar
Cryptogrammaceae Pic.Serm.
Hemionitidaceae Pic.Serm.
Negripteridaceae Pic.Serm.
Parkeriaceae Hook.
Platyzomataceae Nakai
Sinopteridaceae Koidz.
Taenitidaceae Pic.Serm.
Vittariaceae Ching
Pteridaceae is a family of ferns in the order Polypodiales., including some 1150 known species in ca 45 genera (depending on taxonomic opinions), divided over five subfamilies. Members of the family have creeping or erect rhizomes and are mostly terrestrial or epipetric (growing on rock). The leaves are almost always compound and have linear sori that are typically on the margins of the leaves and lack a true indusium, typically being protected by a false indusium formed from the reflexed margin of the leaf. The family includes four groups of genera that are sometimes recognized as separate families: the adiantoid, cheilanthoid, pteroid, and hemionitidoid ferns. Relationships among these groups remain unclear, and although some recent genetic analyses of the Pteridales suggest that neither the family Pteridaceae nor the major groups within it are all monophyletic, as yet these analyses are insufficiently comprehensive and robust to provide good support for a revision of the order at the family level.
As traditionally defined, the groups within Pteridaceae are as follows:
Based on phylogenetic research, Christenhusz et al. (2011) divided the Pteridaceae genera into the following subfamilies. These roughly correspond with the groups listed above, with the main difference being that adiantoid and vittarioid ferns are combined under the Vittarioideae subfamily name.
The following phylogram, showing the relationships between the subfamilies listed above, is based on Schuettpelz & Pryer (2008).
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