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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] North American botanists recognized early that there were close relationships between many of the species of Dryopteris on the continent, and that these relationships reflected hybrid ancestry. [2]
Dryopteris intermedia is a perennial fern that grows to a size of about 40–90 cm (16–35 in) tall and 60–90 cm (24–35 in) wide. [6] At its base, it consists of an underground rhizome from which grow the fronds of the plant in a spiral-like arrangement.
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]
They are known colloquially as the wood ferns. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family is placed in the suborder Polypodiineae . [ 1 ] Alternatively, it may be treated as the subfamily Dryopteridoideae of a very broadly defined family Polypodiaceae sensu lato .
Crested wood fern: Fulton county G5 - secure: Dryopteridaceae: 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 ...
Dryopteris goldieana, commonly called Goldie's wood fern, or giant wood fern is a fern native to the eastern United States and adjacent areas of Canada, from New Brunswick to Ontario and Georgia. [3] It is the largest native North American species of Dryopteris and along with ostrich fern it is one of the largest ferns in eastern North America.