Observation 162141: Armillaria (Fr.) Staude
When: 2012-09-29
No herbarium specimen

Notes: Growing in lawn on buried same time and place as last year’s foray

Proposed Names

69% (6)
Eye3 Eyes3
Recognized by sight
-50% (4)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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By: Martin Livezey (MLivezey)
2014-03-27 04:31:51 PDT (-0700)

I agree with you, it is a crazy mushroom. Here are mushrooms at the same place the previous year, old both times.


I took all those pictures without even thinking of the word Armillaria. But this has to be in that clade. I have not seen anything this size anywhere else, hence the lack of a species name this time, but it is old. Younger specimens from 2011 look dead on. I have not studied Tom Volk’s work on Armillaria. There really are a lot of mushrooms out there…, So many mushrooms, so little time.

i digress…
By: Richard and Danielle Kneal (bloodworm)
2014-03-26 18:33:55 PDT (-0700)

this is a crazy mushroom…

The gill color…
By: Dave W (Dave W)
2014-03-26 18:01:18 PDT (-0700)

is different than the usual off-white that I see in most Armillarias I find, but not all that unusual. Color of post-mature gills seems to vary quite a bit with these types. Or maybe there are some Armillaria species that occur in relatively small numbers? As I’m sure you are aware, Martin, Tom Volk has identified a host of North American Armillaria species.

One way to separate Armillarias from many other white-spored fleshy late-season annulate mushrooms is the internal structure of the stipe. Diagonal cross-section shows tough fibrous outer layer and inner whitish cottony “stuffing”… well, as long as the insects haven’t hollowed it out.

By: Richard and Danielle Kneal (bloodworm)
2014-03-26 17:55:54 PDT (-0700)

Created: 2014-03-26 17:42:13 PDT (-0700)
Last modified: 2014-03-27 14:39:13 PDT (-0700)
Viewed: 55 times, last viewed: 2014-04-02 17:30:42 PDT (-0700)
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