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Montana Field Guide

Montana Field Guides

Western Cliff Fern - Woodsia oregana

Status Under Review
Native Species

Global Rank: G5
State Rank: S3?
(see State Rank Reason below)

Agency Status
MNPS Threat Rank:

External Links

State Rank Reason (see State Rank above)
Approximately 20 collections at MONTU from various counties.
General Description
Leaves with sparse glandular hairs; the petioles ca. as long as blades and resistant to shattering. Leaf blades linear to narrowly elliptic, often twice pinnate below, 5–15 cm long, lower pairs of pinnae widely separated. Pinnules lobed or toothed, glabrous or with tack-like glandular hairs (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
BC to ON south to CA, OK and MI (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 97

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



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


  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Cope, M.G. 1992. Distribution, habitat selection and survival of transplanted Columbian Sharp-tailed Grouse (Tympanuchus phasianellus columbianus) in the Tobacco Valley, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 60 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Western Cliff Fern — Woodsia oregana.  Montana Field Guide.  .  Retrieved on , from