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

58% (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 10:49:06 CDT (-0400)
This material has been accessioned into Rod’s herbarium.


By: R. E. Tulloss (ret)
2011-08-15 22:08:47 CDT (-0400)

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 21:34:18 CDT (-0400)

is one which I handed to Christina at NEMF.

By: R. E. Tulloss (ret)
2011-08-15 12:45:10 CDT (-0400)

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 08:47:56 CDT (-0400)

No yellow reaction with 5% KOH.

Why not try it?
By: R. E. Tulloss (ret)
2011-08-11 08:11:16 CDT (-0400)

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)
2011-08-11 02:57:03 CDT (-0400)

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 10:50:08 CDT (-0400)

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


Created: 2011-07-29 09:52:13 CDT (-0400)
Last modified: 2011-07-29 09:53:33 CDT (-0400)
Viewed: 118 times, last viewed: 2017-02-04 09:29:10 CST (-0500)
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