Gymnocarpium dryopteris

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Gymnocarpium dryopteris
Gymnocarpium dryopteris 0318.JPG

Secure (NatureServe)
Scientific classification e
Kingdom: Plantae
Division: Pteridophyta
Class: Polypodiopsida/Pteridopsida
Order: Polypodiales
(unranked): Eupolypods II
Family: Cystopteridaceae
Genus: Gymnocarpium
Species: G. dryopteris
Binomial name
Gymnocarpium dryopteris
(L.) Newman

Gymnocarpium dryopteris (western oakfern, common oak fern, oak fern[1] or northern oak fern) is a fern of the family Cystopteridaceae. It is widespread across much of North America and Eurasia. It has been found in Canada, the United States, Greenland, China, Japan, Korea, Russia, and most of Europe. [2][3][4][5]


Gymnocarpium dryopteris has small, delicate fronds up to 40 cm (16 inches) long, with ternately-compound pinnae (leaves). Fronds occur singly. On the underside of matured pinnae with naked sori can be found. The species grows in coniferous woodlands and on shale talus slopes.[2]

Gymnocarpium dryopteris, a forest understory plant, is not found in association with Quercus (oak).[6][7]


  1. ^ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17. 
  2. ^ a b Flora of North America, Gymnocarpium dryopteris (Linnaeus) Newman, 1851. Common oak fern, gymnocarpe fougère-du-chêne
  3. ^ Biota of North America Program 2014 state-level distribution map
  4. ^ Flora of China, Gymnocarpium dryopteris (Linnaeus) Newman, 1851. 欧洲羽节蕨 ou zhou yu jie jue
  5. ^ Altervista Flora Italiana, Felce delle querce, Gymnocarpium dryopteris (L.) Newman includes photos and European distribution map
  6. ^ Plants of the Pacific Northwest Coast: Washington, Oregon, British Columbia & Alaska, Written by Paul Alaback, ISBN 978-1-55105-530-5
  7. ^ Pojar, Jim; Andy MacKinnon (1994). Plants of the Pacific Northwest. Lone Pine Publishing. p. 423. ISBN 1-55105-042-0. 

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