Details of...
Scientific Name: Gymnocarpium dryopteris
Pronunciation: jim-no-KAR-pee-um dry-OP-tur-iss
Common Name: oak fern
Family Name: Cystopteridaceae
Plant Type: Fern
Key ID Features: Leaves tri-pinnately compound, triangle-shaped, yellow-green/turns dark green; sub-leaflets oblong when young/lobed when mature; sporangia tiny clusters along margins, rust-brown.
Course(s): not used (on campus)

Habit: Arching, Upright
Form: Creeping / Mat-like, Oval - horizontal
Texture: Medium - fine
Mature Size:
Height:0.2 - 0.4m
Spread:0.3 - 0.6m
Growth Rate:Moderate
Origin: Canada - northern, Europe, U.S. - northeast, U.S. - northwest
Hardiness Rating: Zone 2: (-46 to -40 C)
Exposure: Deep shade, Filtered shade, Part sun/part shade
Soil/ Growing Medium: Humus rich, Well-drained
Water Use: Moderate
Landscape Uses: Alpine, Aquatic - ponds, Container planting, Ground cover, Group or mass planting, Mixed shrub border, Small garden/space, Woodland margin
Additional Info: Google. Cultivars shown include G. 'Plumosum'.
oak fern
Leaf Morphology: Glossary
Form: Compound, Fern-like
Arrangement: Basal
Texture/ Venation: Soft flexible
Compound Leaf: Tripinnate
Colour in Fall: Green
Leaf(let) Terms:
Shapes: Deltoid
Apices: Acute
Margins: Crenate

Inflorescence Type: n/a
Flower Morphology:n/a
Colour (petals): No flowers
Flower Time at Peak:
Fruit Type: Sporangium (spores)
Fruit Colour: Green-yellow
Fruiting Time:

Bark or Stem Colour:
Additional Info:no above ground stem
Organ Modifications: Rhizomes

Propagation: Spore, Division - below ground parts
Plant Care:
Other:Source of habit image: Source of leaf image:
Pest Susceptibility: Pest resistant, Disease resistant
(PDW) PonD West : Parrotia
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