Observation 202053: Amanita sect. Amanita

When: 2014-09-10

Collection location: Chase, Luzerne Co., Pennsylvania, USA [Click for map]

Who: Phil Yeager (gunchky)

No specimen available

Small yellowish caps with annulus on upper 1/3 of stipe. Small basal bulb, but no volva showing. Possibly disintegrated or left in the soil. Found under Spruce.

Proposed Names

29% (1)
Used references: Kuo
63% (3)
Eye3 Eyes3
Recognized by sight: Compare with obs 114779 and other obses mentioned within comments there.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thank you for good wishes.
By: R. E. Tulloss (ret)
2015-03-31 06:04:37 PDT (-0700)

I’m looking for a t-shirt that says, “I survived the Roosevelt, NJ, winter of 2015…successfully keeping the Prius battery alive…while sheltered by my wife and cat.”


Hello Rod.
By: Phil Yeager (gunchky)
2015-03-30 12:31:29 PDT (-0700)

Hope you are well. Thanks for the info on this species.

Hello, Phil.
By: R. E. Tulloss (ret)
2015-03-30 07:29:11 PDT (-0700)

I think I’ve probably posted about this in the past.

The original description of Amanita russuloides is very, very minimal. It is not even clear to me why the mushroom should be like a Russula. Although it might be because of tuberculate striations on the cap margin. Dr. Jenkins’ type study revealed that the spores of russuloides are dominantly ellipsoid and inamyloid. The species is very likely to belong in Amanita section Amanita.

Over the years, I have seen and collected and been sent specimens that might fit the description of russuloides.

With molecular methods, we have an approach to the problem. Namely, I can take all the material that I have thought might be russuloides, attempt to sequence all of it, and see how many clusters of sequences I obtain for one or another gene. If we have only one cluster (with a geographic distribution including Peck’s collecting sites in New York State), then we have a very good candidate for giving a clear meaning to the name “russuloides.” Of course, there are other more confusing possibilities.

This process has begun. It is going to take some time because of the number of collections involved and the fact that they must all be sampled by a manual process and be sent off for sequencing. We are starting with a selection including a number of collections of A.sp-S01.”

The amount of data available at the moment is too small to allow any conclusions to be drawn. And this is why we still have not identified any of the “temporary code names” as being A. russuloides.

Very best,


Created: 2015-03-29 17:52:50 PDT (-0700)
Last modified: 2015-03-30 12:24:34 PDT (-0700)
Viewed: 72 times, last viewed: 2017-06-19 22:25:23 PDT (-0700)
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