Observation 131618: Peltigera neopolydactyla (Gyeln.) Gyeln.

When: 2013-04-09

Collection location: Ainsworth State Park, Multnomah Co., Oregon, USA [Click for map]

Who: Drew Henderson (Hendre17)

No specimen available

Found in moss beneath Douglas fir/red alder.

Temp: upper 50’s, light precipitation.



Proposed Names

16% (2)
Recognized by sight
84% (1)
Recognized by sight: broad, undulating, shiny, glabrous lobes; saddle- or finger-shaped brown apothecia

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= Observer’s choice
= Current consensus


Add Comment
Totally agree with Zaca
By: Jason Hollinger (jason)
2013-04-12 21:36:47 CDT (-0400)
The underside …
By: zaca
2013-04-10 14:31:06 CDT (-0400)

do not correspond to Peltigera membranacea, since magnifying the photos one can be a dark under surface with black squarrose rhizines. Here is a description of the underside of the thallus of that species taken from the British Flora:
“lower surface uniformly whitish, with pale, raised veins and well developed, simple, dispersed, pubescent, danger-like rhizines”. On the other hand, that species also presents a upper surface white-grey tomentose and bullate-ridgid, which is not the case. I think that a better option will be Peltigera neopolydactyla, but I’m far from being an expert.

Created: 2013-04-09 21:10:39 CDT (-0400)
Last modified: 2013-04-12 21:36:10 CDT (-0400)
Viewed: 42 times, last viewed: 2017-07-09 17:26:39 CDT (-0400)
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