Katolog > Science > Biology > Flora and Fauna > Plantae > Polypodiophyta

Also known as the Pteridopsida, or the ferns. These plants have a reduced gametophytic stage, with the sporophytic stage of growth being dominant in the life cycle. The ferns still produce spores like mosses, however, they have specialised vascular tissue (xylem and phloem ) as seen in the angiosperms. Ferns are characterised by spore-producing megaphylls ("fronds") arising from a stem. The stem can vary from a horizontal, underground rhizome to tall and trunk-like. The division Polypodiophyta contains three orders, the Ophioglossales, Marattiales and the Filicales.

Kategorier

Marratiopsida (9) Marsileopsida (9) Ophioglossopsida (11)

Polypodiopsida (555) Salviniopsida (26)

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Home » Gardening » Plants » Ferns (8) Science » Biology » Flora and Fauna » Plantae » Pteridophyta (13)

Links:

Phylum Pterophyta Includes a description of the fern life cycle, list of families and genera, and links to images of selected representatives. www.science.siu.edu/landplants/Pterophyta/pterophyta.html

Introduction to the Ferns The ferns are an ancient lineage of plants, dating back to at least the Devonian. They include three living groups - Marattiales, Ophioglossales, and leptosporangiate ferns - as well as a couple of extinct groups. www.ucmp.berkeley.edu/plants/pterophyta/pteridopsida.html

Filicopsida Introduction to ferns from the Tree of Life project. tolweb.org/tree?group=Filicopsida&contgroup=Embryophytes

Leptosporangiate Ferns Next to the flowering plants, the leptosporangiate ferns are the most diverse group of living land plants. Estimates place their diversity at about 12,000 species in around 300 genera. This page is part of the tree of life phylogeny project. tolweb.org/..

Pterophyta Introduction to the systematics of the ferns, with family descriptions and images. botit.botany.wisc.edu/../../Phyla/Pterophyta/Pterophyta.html

Pterophyta Taxa List of all families and genera, with numbers of species and ranges. www.science.siu.edu/landplants/Pterophyta/pterophyta.taxa.html

British Fern Species Searchable database. midwales.com/westhill/mydbfern

Ferns of Great Britain and Ireland Small images of 39 antique prints by Thomas Moore, 1855. rare-prints.com/ferns_main.htm

Ferns of Fern Forest and South Florida Photographs and descriptions of the ferns of southern Florida. fig.cox.miami.edu/~scofield/sofl_plants/fern_index.html

Ferns Around Washington, DC A collection of images and information on ferns growing in the DC area. members.aol.com/palmferndc/ferns

Ferns et al of New England and Bermuda Lists all native pteridophyte species and some hybrids, with photographs of most and data pages for some. theworld.com/~donlubin

Ferns of the Canberra Region A site about ferns in southeastern Australia, their ecology, how to grow them, information on ferns in general, with numerous photographs. www.home.aone.net.au/byzantium/ferns

American Fern Society Information on the biology and cultivation of ferns; activities of the society including a spore exchange and publication of Fiddlehead Forum, American Fern Journal, and Pteridologia. amerfernsoc.org

Ferns of Barbados Checklist plus distribution data and links for each species. scitec.uwichill.edu.bb/bcs/staff/lec/ferns.htm

Gallery of Connecticut Ferns Photos and brief information indexed by common and scientific names. www.ct-botanical-society.org/ferns

Recent pteridophyte name changes Refers to Australian taxa and mainly changes effected in the 1990s. www.anbg.gov.au/projects/fern/name_changes.html

Phylogeny and evolution of ferns (Monilophytes) Scientific paper from American Journal of Botany 2004 showing that Psilotophyta and Equisetophya are in the Monilophyte clade with the other ferns. www.pryerlab.net/publication/fichier494.pdf