Observation 84938: Amanita sect. Vaginatae sensu Zhu L. Yang

When: 2011-12-03

Collection location: Mendocino, California, USA [Click for map]

Who: Debbie Viess (amanitarita)

Specimen available

collected around Jackson Demonstration Forest, Mendocino Co., California, USA



Proposed Names

26% (3)
Recognized by sight: dark grey ornamentation on stipe, gray cap, orange staining, extensive and tightly adhering UV patch on cap

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
And I think I’ll keep my money on protecta in this case.
By: R. E. Tulloss (ret)
2014-12-15 19:40:41 -02 (-0200)


Thiers mixed protecta with constricta in the original description of the latter.
By: R. E. Tulloss (ret)
2014-12-15 19:39:01 -02 (-0200)

It is a little bit easier to understand after seeing this specimen. I agree with Christian regarding the value of trying to get some more data from this material…whatever it may turn out to be.

Very best,


you should still send this as well
By: Christian (Christian Schwarz)
2014-12-15 19:31:57 -02 (-0200)

The reason Rod mentioned for wanting this one in particular is that it would establish that species from Mendocino Co..
You may be right that the saccate volva is outside the range of what can be found in A. protecta, but I still put my bet on that species.

it was certainly an unusual grisette …
By: Debbie Viess (amanitarita)
2014-12-15 19:27:13 -02 (-0200)

and I see the similar characters with protecta, BUT … that membranous, simple volva, of a piece rather than crumbling and made up of multiple layers, plus the gray inner volva, makes me think that this is rather something like constricta. It also has a constricted volva, gray stipe ornamentation is also possible for that sp as is red staining, as well as persistent cap patches and warts.

So, probably NOT protecta. I might have some unambiguous protecta lying about here. If not, I can make a point of collecting some and sending it to you, Rod. This looks to be a fabulous year for EVERYTHING … why not amanita diversity, too?

Hello, Debbie.
By: R. E. Tulloss (ret)
2014-12-15 18:03:13 -02 (-0200)

I agree with Christian that this is probably protecta. I don’t know of another collection from Mendocino County and wonder if you would share part of the collection with me. For some reason we haven’t been able to post an nrLSU sequence from protecta to GenBank yet. So I’m hoping we could get lucky with this collection. The picture is also very nice.

Very best,


small, attractively marked grisette…
By: Debbie Viess (amanitarita)
2011-12-20 01:32:22 -02 (-0200)

with red staining and pinched volva, it could be a constricta.

Created: 2011-12-20 01:31:13 -02 (-0200)
Last modified: 2014-12-15 19:27:30 -02 (-0200)
Viewed: 65 times, last viewed: 2017-07-01 19:53:42 -03 (-0300)
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