Observation 28192: Mycena (Pers.) Roussel

When: 2009-11-13

Collection location: San Francisco, San Francisco Co., California, USA [Click for map]

Who: Micah Courteau (waynegrompsky)

Specimen available

growing out of large Pine or Douglas Fir stump alongside some “bleeding” Mycenas. Very strange bluing reaction on stem. Not sure sure what this is all about.


Proposed Names

-34% (6)
Recognized by sight
36% (7)
Recognized by sight
-14% (8)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
By: Erin Page Blanchard (CureCat)
2009-11-14 08:56:29 PST (-0800)

I was not aware. Thanks for the correction!

Radicating stipes
By: Irene Andersson (irenea)
2009-11-14 05:03:51 PST (-0800)

DO occur in Mycenas, galericulata for example (I’m not saying this is it, though)

By: Erin Page Blanchard (CureCat)
2009-11-13 14:16:02 PST (-0800)

Mycena do NOT have radicating stipes!

“Very strange bluing…”
By: Erin Page Blanchard (CureCat)
2009-11-13 14:02:39 PST (-0800)

“Very strange bluing reaction on stem. Not sure sure what this is all about.”

I think I know what that is all about…

I am going to bet that these were picked and placed into the same bag as Psilocybe cyanescens. The blue colour will transfer to other surfaces, staining them with blue spots.

That pseudorhiza narrows the identification down a bit… Kind of a weird one, with the conical cap and growing from a conifer.
It doesn’t look like a Rhodocollybia… I am going to guess Xerula, though I can’t rule out Oudemansiella either.