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Dennstaedtiaceae is one of fifteen families in the order Polypodiales, the most derived families within monilophytes (ferns). It comprises 10 genera with ca 240 known species, [2] including one of the world's most abundant ferns, Pteridium aquilinum (bracken).
Below are lists of extant fern families and subfamilies using the classification scheme proposed by the Pteridophyte Phylogeny Group in 2016 (PPG I). [1] The scheme is based on molecular phylogenetic studies, and also draws on earlier classifications, [1] particularly those by Smith et al. (2006), [2] Chase and Reveal (2009), [3] and Christenhusz et al. (2011). [4]
The ferns (Polypodiopsida or Polypodiophyta) are a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers.They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients, and in having life cycles in which the branched sporophyte is the dominant phase.
The forked ferns are the family Gleicheniaceae, which includes six genera and about 160 known species. [1] The formerly independent families Dicranopteridaceae and Stromatopteridaceae are generally included in the Gleicheniaceae, whereas the Dipteridaceae and Matoniaceae , although closely related, are considered separate families by most authors.
Equisetidae is one of the four subclasses of Polypodiopsida (ferns), a group of vascular plants with a fossil record going back to the Devonian. They are commonly known as horsetails . [ 2 ] They typically grow in wet areas, with whorls of needle-like branches radiating at regular intervals from a single vertical stem.
Adiantum lunulatum. Pteridaceae is a family of ferns in the order Polypodiales, [2] including some 1150 known species in ca 45 genera [3] (depending on taxonomic opinions), divided over five subfamilies. [4]
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