Observation 169338: Amanita sect. Vaginatae sensu Zhu L. Yang
When: 2014-07-09
Collection location: Perry, Maine, USA [Click for map]
No herbarium specimen

Notes: Mossy ground under cedar and balsam fir in mixed woods.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I don’t that’s a silly question.
By: R. E. Tulloss (ret)
2014-07-09 20:24:37 PDT (-0700)

We don’t really know all of the things that affect pigment. We know that some mushrooms tend to lose pigment from it’s cap in heavy rain (e.g., A. flavorubens). On the other hand, no one has ever carried out a study as to why this is the case. Sometimes a mushroom with a leaf stuck to its cap will not develop pigment under the leaf. I have seen this is the eastern yellow muscarioid amanita.

With regard to sinicoflava, I can hasten the graying of the volva by pressing on it; but I don’t know why that works. Usually, the volva of sinicoflava begins to get gray before the cap is even half expanded. I am not even sure how much variation there is in the timing of the color change.

Such things require investigation into specifics and an effort to collect a single species again and again.

That requires persistence and luck and avoidance of the temptation to learn about the next “new” mushroom and the next…and so on.

Very best,


Thanks, Rod
By: Terri Clements/Donna Fulton (pinonbistro)
2014-07-09 19:57:00 PDT (-0700)

This may be a silly question but I was wondering if heavy rains could affect coloring of the volva?


If this were sinicoflava the volva would be gray at the stage of maturity of…
By: R. E. Tulloss (ret)
2014-07-09 15:31:00 PDT (-0700)

the mushroom with the more mature cap.

I don’t have a guess.

Very best,


Created: 2014-07-09 14:54:54 PDT (-0700)
Last modified: 2014-07-09 14:55:14 PDT (-0700)
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