Western oakfern

Gymnocarpium dryopteris

''Gymnocarpium dryopteris'' 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.
Gymnocarpium dryopteris (Oak-leaf Fern) Gymnocarpium dryopteris (Oak-leaf Fern) plants growing at the edge of a mixed hardwood forested wetland in northern Minnesota. The soil here is damp and with a high amount of organic matter. Beneath the organic layer the soil is sand and gravel with some silt. The site is densely shaded during the growing season. Geotagged,Gymnocarpium dryopteris,Minnesota,Northern Oak Fern,Oak-leaf Fern,Pteridophytes,Spring,United States,Western oakfern,ferns,plants,wetlands

Appearance

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

''Gymnocarpium dryopteris'', a forest understory plant, is not found in association with ''Quercus'' .

In cultivation in the UK this plant and the cultivar ‘Plumosum’ have gained the Royal Horticultural Society’s Award of Garden Merit.

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Status: Unknown
EX EW CR EN VU NT LC
Taxonomy
KingdomPlantae
DivisionPolypodiophyta
ClassPolypodiopsida
OrderPolypodiales
FamilyCystopteridaceae
GenusGymnocarpium
SpeciesG. dryopteris
Photographed in
United States of America