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Dryopteris intermedia, the intermediate wood fern or evergreen wood fern, [4] [3] is a perennial, evergreen wood fern native to eastern North America. It is a diploid species, and is the parent of several species of hybrid origin, including Dryopteris carthusiana .
Dryopteris goldieana [1]: 13 Goldie's wood fern, Giant wood fern: Northeastern mountain counties G4 - apparently secure: Dryopteridaceae: Dryopteris intermedia [1]: 14 Evergreen wood fern, Fancy fern: North Georgia G5 - secure: Dryopteridaceae: Dryopteris ludoviciana [1]: 14 Southern wood fern: South of the fall line, mainly in southwestern ...
Dryopteris / d r aɪ ˈ ɒ p t ə r ɪ s /, [2] commonly called the wood ferns, male ferns (referring in particular to Dryopteris filix-mas), or buckler ferns, is a fern genus in the family Dryopteridaceae, subfamily Dryopteridoideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). [3]
It is a tetraploid of hybrid origin, one parent being Dryopteris intermedia, known in North America as the intermediate wood fern, and an unknown, apparently extinct species dubbed Dryopteris semicristata, which is also the presumed parent of the hybrid-origin Dryopteris cristata. This plant is toxic. [4] Showing sori and leaflet shape
Dryopteris filix-mas — male fern; Dryopteris fragrans — fragrant cliff woodfern; Dryopteris goldieana — Goldie's woodfern; Dryopteris intermedia — evergreen woodfern; Dryopteris marginalis — marginal woodfern; Dryopteris x algonquinensis; Dryopteris x benedictii; Dryopteris x boottii; Dryopteris x burgessii; Dryopteris x dowellii ...
Dryopteris cristata — crested woodfern; Dryopteris expansa — spreading woodfern, northern Buckler fern, northern woodfern; Dryopteris filix-mas — male fern, Dryopteris fragrans — fragrant woodfern; Dryopteris goldieana — Goldie's woodfern; Dryopteris intermedia — evergreen woodfern; Dryopteris marginalis — marginal woodfern ...
Dryopteris crispifolia Rasbach, Reichst. & G.Vida; Dryopteris intermedia subsp. azorica (Christ) Jermy; Dryopteris × madalenae Fraser-Jenk. (D. crispifolia × D. intermedia subsp. azorica) – Pico; Dryopteris × martinsiae Fraser-Jenk. (D. aemula × D. crispifolia) – Pico; Dryopteris × picoensis Fraser-Jenk.
The largest genera are Elaphoglossum (600+), Polystichum (260), Dryopteris (225), and Ctenitis (150). These four genera contain about 70% of the species. [ 4 ] Dryopteridaceae diverged from the other families in eupolypods I about 100 million years ago.