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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 .
North American Dryopteris reticulate complex. Hybridization and polyploidy are common phenomena in ferns, and the genus Dryopteris is known to be one of the most freely-hybridizing fern genera. [1]
Dryopteris × madalenae Fraser-Jenk. (D. crispifolia × D. intermedia subsp. azorica) – Pico; Dryopteris × martinsiae Fraser-Jenk. (D. aemula × D. crispifolia) – Pico; Dryopteris × picoensis Fraser-Jenk. & Gibby (D. affinis × D. intermedia subsp. azorica) – Pico; Dryopteris × sjoegrenii Fraser-Jenk. (D. dilatata × D. intermedia ...
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 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 aitoniana Pic.Serm. Dryopteris × furadensis Bennert, Rasbach, K.Rasbach & Viane (D. aitoniana × D. intermedia subsp. maderensis) Dryopteris intermedia subsp. maderensis (Alston) Fraser-Jenk. Polypodium × encumeadense (Neuroth, W.Jäger & Bennert) Rumsey, Carine & Robba (P. macaronesicum × P. vulgare) Polystichum drepanum (Sw.) C ...
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