Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Northern Oak Fern - Gymnocarpium dryopteris
Other Names:  Gymnocarpium disjunctum

Image Copyright and Usage Information
Native Species

Global Rank: G5
State Rank: S4
C-value: 7


Agency Status
USFWS:
USFS:
BLM:


 

External Links

 
General Description
Plants with long, slender, scaly rhizomes. Leaves to 45 cm long, scattered, erect, petiole longer than blade. Leaf blade triangular, twice pinnate below but once above. Pinnae: lowest pair similar in size to the rest of blade. Pinnules pinnately lobed or toothed, glabrous or slightly glandular. Sori circular, borne on veins near margins on underside of fertile pinnules. Indusium lacking (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions

Native
 


Range Comments
In MT scattered across the western third of the State, mostly west of the Continental Divide; AK to Greenland south to OR, AZ, NM, IL, and WV (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 1039

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat

References
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
  • Web Search Engines for Articles on "Northern Oak Fern"
Login Logout

Take us with you! PDF icon

Look for this PDF icon as you search and browse.  Click it to build a custom PDF with species shown on that page or for all the species within that taxonomic level.  To create your own list of species, use the PDF Creator tool at the bottom of the Advanced Search page.

Here's some links if you want to download a whole group.

Mammals
Birds
Reptiles
Amphibians
Fish
Invertebrates
Butterflies / Moths
Dragonflies / Damselflies
Ferns and allies
Conifers
Flowering Plants (Dicots)
Flowering Plants (Monocots)
Bryophytes
Lichens
Ecological Systems
Noxious Weeds
Citation for data on this website:
Northern Oak Fern — Gymnocarpium dryopteris.  Montana Field Guide.  .  Retrieved on , from