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Northern Oak Fern - Gymnocarpium dryopteris
Other Names:
Gymnocarpium disjunctum
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: 1048
(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
Stewardship Responsibility
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.
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