Gymnocarpium dryopteris

Gymnocarpium dryopteris, the western oakfern, common oak fern , oak fern,[1] or northern oak fern, is a deciduous 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

Secure  (NatureServe)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Class: Polypodiopsida
Order: Polypodiales
Suborder: Aspleniineae
Family: Cystopteridaceae
Genus: Gymnocarpium
Species:
G. dryopteris
Binomial name
Gymnocarpium dryopteris
(L.) Newman
Synonyms

Description

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 the naked sori can be found (the Latin generic name gymnocarpium means "with naked fruit").[6] 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).[7][8]

In cultivation in the UK this plant and the cultivar "Plumosum"[9] have gained the Royal Horticultural Society’s Award of Garden Merit.[10][11]

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References
  1. "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2014-10-23. Retrieved 2014-10-17.
  2. 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. Harrison, Lorraine (2012). RHS Latin for Gardeners. United Kingdom: Mitchell Beazley. ISBN 978-1845337315.
  7. Alaback, Paul Plants of the Pacific Northwest Coast: Washington, Oregon, British Columbia & Alaska ISBN 978-1-55105-530-5
  8. Pojar, Jim; Andy MacKinnon (1994). Plants of the Pacific Northwest. Lone Pine Publishing. p. 423. ISBN 1-55105-042-0.
  9. "RHS Plantfinder - Gymnocarpium dryopteris 'Plumosum'". Retrieved 2 March 2018.
  10. "RHS Plantfinder - Gymnopcarpium dryopteris". Retrieved 3 March 2018.
  11. "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 43. Retrieved 2 March 2018.


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