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Psilotopsida

Cladus: Eukaryota
Regnum: Plantae
Divisio: Pteridophyta
Classis: Psilotopsida
Ordo: Ophioglossales - Psilotales

Vernacular names
Internationalization
Magyar: Ősharasztok

Synonyms

* Ophioglossopsida


References

* Smith, A.R. et al. 2006; "A classification for extant ferns" Taxon 55(3):705–731 pdf


Vernacular names
Magyar: Ősharasztok

Psilotopsida is a class of fern-like plants.[1] It should not be confused with the obsolete class Psilophytopsida. As circumscribed by Smith et al. (2006) Psilotopsida contains two families, Psilotaceae and Ophioglossaceae, placed in orders Psilotales and Ophioglossales, respectively. The affinities of these two groups have long been unclear and a close relationship between them has only recently been confirmed through molecular systematic studies. Psilotopsida is the sister-group to all other ferns (including Marattiaceae and Equisetaceae).

References

* Media related to Psilotopsida at Wikimedia Commons

1. ^ Smith, Alan R.; Kathleen M. Pryer, Eric Schuettpelz, Petra Korall, Harald Schneider, & Paul G. Wolf (2006). "A classification for extant ferns" (PDF). Taxon 55 (3): 705–731. doi:10.2307/25065646. JSTOR 25065646. http://www.pryerlab.net/publication/fichier749.pdf.

* Pryer, Kathleen M., Eric Schuettpelz, Paul G. Wolf, Harald Schneider, Alan R. Smith and Raymond Cranfill. 2004. Phylogeny and evolution of ferns (monilophytes) with a focus on the early leptosporangiate divergences. American Journal of Botany 91:1582-1598 (online abstract here).

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Source: Wikipedia, Wikispecies: All text is available under the terms of the GNU Free Documentation License