Observation 162141: Armillaria (Fr.) Staude

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

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By: Martin Livezey (MLivezey)
2014-03-27 06:31:51 CDT (-0500)

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 Kneal (bloodworm)
2014-03-26 20:33:55 CDT (-0500)

this is a crazy mushroom…

The gill color…
By: Dave W (Dave W)
2014-03-26 20:01:18 CDT (-0500)

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 Kneal (bloodworm)
2014-03-26 19:55:54 CDT (-0500)

Created: 2014-03-26 19:42:13 CDT (-0500)
Last modified: 2014-03-27 16:39:13 CDT (-0500)
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