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Alpine Ladyfern - Athyrium alpestre
Other Names:
Athyrium americanum, Athyrium distentifolium
Native Species
Global Rank:
G4G5
State Rank:
S4
C-value:
7
Agency Status
USFWS:
USFS:
BLM:
External Links
General Description
Leaves ascending or erect, densely clustered or widely separated in talus, 15–70 cm long, petiole shorter than the blade. Leaf blade narrowly lance-shaped, twice pinnate. Sori borne at sinuses of pinnule lobes. Indusium absent (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Species Range
Montana Range
Range Descriptions
Native
Range Comments
Circumboreal south to CA and CO (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations: 19
(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
Rock slides and stony soil of meadows, often along streams, less common in cliff crevices; subalpine to alpine (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
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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