The Pteridales are ferns that have their sori in linear strips under the edge of the leaf tissue, usually with the edge of the lamina reflexed over. Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophytaâliverworts Anthocerotophytaâhornworts Bryophytaâmosses Vascular plants (tracheophytes) â Rhyniophytaârhyniophytes â Zosterophyllophytaâzosterophylls Lycopodiophytaâclubmosses â Trimerophytophytaâtrimerophytes Pteridophytaâferns and horsetails Seed plants (spermatophytes) â Pteridospermatophytaâseed ferns Pinophytaâconifers Cycadophytaâcycads Ginkgophytaâginkgo Gnetophytaâgnetae Magnoliophytaâflowering plants... Classes Marattiopsida Osmundopsida Gleicheniopsida Pteridopsida A fern, or pteridophyte, is any one of a group of some twenty thousand species of plants classified in the Division Pteridophyta, formerly known as Filicophyta. ... Subclasses Subclass: Cyatheatae Subclass: Schizaeatae Subclass: Pteriditae Subclass: Polypoditae The Pteridopsida is a class of plants in the Division Pteridophyta that includes the modern ferns. ... Genera Ceratopteris Parkeriaceae is a small fern family, including only a single genus, Ceratopteris (syn. ... Genera See text Pteridaceae is a large family of ferns in the order Pteridales. ... Genera Vittaria Haplopteris Vittariaceae is a family of ferns in the order Pteridales. ... Classes Psilotopsida Equisetopsida Marattiopsida Pteridopsida (Polypodiopsida) A fern is any one of a group of about 20,000 species of plants classified in the phylum or division Pteridophyta, also known as Filicophyta. ... The underside of a fertile frond of Dicksonia antarctica. ...
Most members of this order are small, but some members of the tropical genusAcrostichum, in the Acrostichaceae, are immense, with fronds 3.5 meters (twelve feet) tall. For other uses of the word, please see Genus (disambiguation). ... A fern with simple (lobed or pinnatifid) blades, the dissection of each blade not quite reaching to the rachis. ...
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