Observation 72832: Amanita Pers.
When: 2011-07-27
Herbarium specimen reported

Notes: Upon digging down about 1.5 inch along the stipe I could find no basal bulb or well developed volval sac. There did appear to be remains on a friable volva. The stipe was growing wedged alongside a tree root, which may account for an abnormality. Spore profile fits bisporigera.

Compare with: http://mushroomobserver.org/72548?q=5p0p

Proposed Names

57% (1)
Eye3 Eyes3
Recognized by sight
Based on microscopic features: wide range in spore size/quotient with some large elongated spores.
Based on chemical features: Spores strongly amyloid.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks Dave,
By: groundhog
2013-07-02 07:49:06 PDT (-0700)
This material has been accessioned into Rod’s herbarium.


By: R. E. Tulloss (ret)
2011-08-15 19:08:47 PDT (-0700)

Then we’ve got it. Your bag arrived in Roosevelt safe and sound.

Very best,


The one seen here in this obs
By: Dave W (Dave W)
2011-08-15 18:34:18 PDT (-0700)

is one which I handed to Christina at NEMF.

By: R. E. Tulloss (ret)
2011-08-15 09:45:10 PDT (-0700)

We’ll try the experiment on some of our dried material of A. bisporigera. If I don’t report soon, bug me.


Broke off a little piece of cap.
By: Dave W (Dave W)
2011-08-11 05:47:56 PDT (-0700)

No yellow reaction with 5% KOH.

Why not try it?
By: R. E. Tulloss (ret)
2011-08-11 05:11:16 PDT (-0700)

I’ve never done it, and I’m sure someone has tried it, but I can’t remember the results with certainty. Why not give it a try?


By: Dave W (Dave W)
2011-08-10 23:57:03 PDT (-0700)

I keep forgetting that yellow with KOH is a bisporgera trait!

Does it make sense to break off a little piece of the dried cap and apply KOH?

By: R. E. Tulloss (ret)
2011-08-10 07:50:08 PDT (-0700)

Did you try putting 5% or, better, 10% KOH on the cap or stem?


Created: 2011-07-29 06:52:13 PDT (-0700)
Last modified: 2011-07-29 06:53:33 PDT (-0700)
Viewed: 115 times, last viewed: 2016-10-22 04:48:25 PDT (-0700)
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