leptosporangiate ferns (Class Filicopsida)


Summary 2

Leptosporangiate ferns are the largest group of living ferns, including some 9000 species worldwide. They constitute the subclass Polypodiidae, but are often considered to be the class Pteridopsida or Polypodiopsida, although other classifications assign them a different rank. The leptosporangiate ferns are one of the four major groups of ferns, with the other three being the Eusporangiate ferns comprising the marattioid ferns (Marattiidae, Marattiaceae), the horsetails (Equisetiidae, Equisetaceae), and whisk ferns and moonworts.

Sources and Credits

  1. (c) J Brew, some rights reserved (CC BY-SA), uploaded by J Brew, http://www.flickr.com/photos/93452909@N00/4219168631
  2. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Filicopsida

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