Gymnocarpium dryopteris

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 Gymnocarpium dryopteris subsp. var.  Common oak fern
Gymnocarpium dryopteris AT.JPG
Habit: fern
Height: to
Width: to
9in15in 9in15in
Height: 9 in to 15 in
Width: 9 in to 15 in
Lifespan: perennial
Exposure: shade
Features: foliage, ground cover
Hidden fields, interally pass variables to right place
Minimum Temp: °Fwarning.png"°F" is not a number.
USDA Zones: 2 to 9
Sunset Zones:
Flower features:
Dryopteridaceae > Gymnocarpium dryopteris var. ,

Gymnocarpium dryopteris (Western Oakfern, Common Oak Fern or Northern Oak Fern) is a fern of the family Polypodiaceae. It has small, delicate fronds with ternately-compound pinnae (leaves). Fronds occur singly. On the underside of matured pinnae naked sori can be found. Common in the Canadian forests, it is also found in Scotland and Scandinavia as well as North Western United States.[1][2] Its name is debated also as gymnocarpium dysjunctum. Oakfern may be a translation of dryoteris. This species, a forest understory plant, is not found in association with Quercus (oak).[3][4]



Pests and diseases




  1. "Gymnocarpium dryopteris". WTU Herbarium Image Collection. Burke Museum, University of Washington. Retrieved on 2009-12-20.
  2. "Gymnocarpium dryopteris (L.) Newman". PLANTS Profile. United States Department of Agriculture; Natural Resources Conservation Service. Retrieved on 2009-12-20.
  3. Plants of the Pacific Northwest Coast: Washington, Oregon, British Columbia & Alaska, Written by Paul Alaback, ISBN 978-1-55105-530-5
  4. Pojar, Jim; Andy MacKinnon (1994). Plants of the Pacific Northwest. Lone Pine Publishing. p. 423. ISBN 1-55105-042-0. 

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