Polypodiales

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Polypodiales
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Polypodium californicum
Scientific classification
Kingdom:
Division:
Class:
Order:
Polypodiales

Link 1833
Families

See text.

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The order Polypodiales encompasses the major lineages of polypod ferns, which comprise more than 80% of today's fern species. They are found in many parts of the world including tropical, semitropical and temperate areas. The characteristics of this group include: sporangia with a vertical annulus interrupted by the stalk and stomium; indusia laterally or centrally attached (or lost); gametophytes green, chordate, and surficial.[1]

Polypodiales may be regarded as one of the most evolutionarily advanced orders of monilophytes (ferns), based on recent genetic analysis. They arose and diversified about 100 million years ago, probably subsequent to the diversification of the angiosperms. [2]

Families

The Polypodiales order includes the following families.[3][4][5] The order in which they are listed is based on the order in which they appear in the phylogram that follows the list. The classification used here follows that of Christenhusz & Chase (2014)[6]

Phylogenic relationships

The following diagram showing a likely phylogenic relationship between the families of the Polypodiales is based on Lehtonen (2011),[3] Rothfels & al. (2012),[7] and Christenhusz & Chase (2014).[6] The classification followed here is that of Christenhusz & Chase (2014).[6]

Polypodiales

Saccolomataceae



Cystodiaceae




Lonchitidaceae



Lindsaeaceae





Dennstaedtiaceae




Pteridaceae

Cryptogrammoideae





Ceratopteridoideae



Pteridoideae





Cheilanthoideae



Vittarioideae







Aspleniaceae

Cystopteridoideae





Rhachidosoroideae




Diplaziopsidoideae



Asplenioideae






Thelypteridoideae




Woodsioideae




Blechnoideae



Athyrioideae







Polypodiaceae

Didymochlaenoideae



Hypodematioideae




Dryopteridoideae





Lomariopsidoideae



Tectarioideae





Oleandroideae




Davallioideae



Polypodioideae

Loxogrammeae





Drynarieae




Platycerieae



Microsoreae





Polypodieae














Obsolete families

Now-obsolete families of Polypodiales include:

  • Drynariaceae - now in Polypodiaceae
  • Grammitidaceae - now in Polypodiaceae
  • Gymnogrammitidaceae - now in Polypodiaceae
  • Loxogrammaceae - now in Polypodiaceae
  • Nephrolepidaceae - now in Lomariopsidaceae
  • Platyceriaceae - now in Polypodiaceae
  • Pleursoriopsidaceae - now in Polypodiaceae
  • Vittariaceae - now in Pteridaceae

References

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Sources