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Photo © ajwick24, all rights reserved
Cougar Mountain Regional Wildland Park (Google, OSM)
47.51006, -122.08717
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Description

I have never seen a fern like this in Washington! Unfortunately it was the only one in the area. It's located next to a stream at the entrance of the park. I noticed other plants that may have been carried from a horticultural nursery down the highway. You never know what's native!

May. 25, 2012 16:04:42 -0700
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Comments & Identifications

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maidenhair ferns - Photo (c) designonze, all rights reserved, uploaded by Gabriela Castro
everett's ID: maidenhair ferns (Genus Adiantum)
Posted by everett about 2 years ago (Flag)
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It looks like Adiantum pedatum of the east, which is not native for you. I'm not sure what other natives that you have other than Adiantum aleuticum, which does not fan out as nicely

Posted by everett about 2 years ago (Flag)
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five-fingered fern - Photo (c) J Brew, some rights reserved (CC BY-NC-SA)
loarie's ID: five-fingered fern (Adiantum aleuticum)

Shoot - thanks everett, I meant Adiantum aleuticum (which is the only five-fingered fern in Washington: http://www.wnps.org/photogallery_ferns.html ) and not A. pedatum.
I've definitely seen ones here in Northern CA that look like the photograph.

Posted by loarie about 2 years ago (Flag)
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five-fingered fern - Photo (c) J Brew, some rights reserved (CC BY-NC-SA)
ajwick24's ID: five-fingered fern (Adiantum aleuticum)
Posted by ajwick24 about 2 years ago (Flag)
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Yes, I assume that it's more splayed out in the shade. Here in the east we only get this species on serpentine.

Posted by everett about 2 years ago (Flag)
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five-fingered fern - Photo (c) J Brew, some rights reserved (CC BY-NC-SA)
invertboy's ID: five-fingered fern (Adiantum aleuticum)
Posted by invertboy about 2 years ago (Flag)
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Posted by richard_olmstead about 2 years ago (Flag)
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Identification Summary

five-fingered fern - Photo (c) J Brew, some rights reserved (CC BY-NC-SA)
ajwick24's ID: five-fingered fern (Adiantum aleuticum)
five-fingered fern - Photo (c) J Brew, some rights reserved (CC BY-NC-SA)
Community ID: five-fingered fern (Adiantum aleuticum)
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loarie invertboy richard_olmstead 3 people agree
maidenhair ferns - Photo (c) designonze, all rights reserved, uploaded by Gabriela Castro
everett's ID: maidenhair ferns (Genus Adiantum)

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Data Quality Assessment

Community-supported ID? Yes
3 people agree
0 people disagree
Date? Yes
Georeferenced? Yes
Photos or sounds? Yes
Is the organism wild/naturalized? Unknown
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Yes / No
Does the location seem accurate? Unknown
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Does the date seem accurate? Unknown
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