Unidentified Fern

The overall shape of the fronds was like that of a lady fern (Athyrium filix-femina), but they seemed different in some way I could not put my finger on. Upon looking in my books, the most likely alternative seems to be alpine lady fern (A. distentifolium). I am not sure whether one of these is correct, or if it is something else. If you can help me identify this fern, please e-mail me using the link at the bottom of the page.

Location: Harbor Mountain-Gavan Hill Trail, near Sitka, Alaska

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