When: 2008-02-02

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

Who: Debbie Viess (amanitarita)

No specimen available

Notes:
This was the first mushroom that we spotted on a piney slope above Hwy. 1.
Absolutely pristine, and an excellant example of the species: dark, mono-toned cap, no prominant umbo, medium length of striations, middle third of volva adherant to stipe (constricted), upper volva flaring, with a gray lining.
Classic example! It even survived heavy handling by the Albion multitudes; nobody can seem to resist a photo op with a huge and gorgeous amanita!

Images

1.In situ
2.In hand
3.On display
1.In situ
2.In hand
3.On display
1.In situ
2.In hand
3.On display

Proposed Names

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= Observer’s choice
= Current consensus

Comments

Add Comment
see the Ceska’s classic constricta obsie under conifers
By: Debbie Viess (amanitarita)
2019-02-18 13:26:34 MST (-0700)
more is always better.
By: Debbie Viess (amanitarita)
2019-02-18 13:23:11 MST (-0700)
ITS is the best gene region for this type of work
By: Alan Rockefeller (Alan Rockefeller)
2019-02-18 13:17:04 MST (-0700)

Other gene regions will show very similar or identical sequences for closely related species because they are more conserves. ITS usually the best for identification and to get species level resolution. Other gene regions are more for phylogeny than identification.

you up-voted a brown capped contricta here, Alan.
By: Debbie Viess (amanitarita)
2019-02-18 13:16:02 MST (-0700)
there is certainly the possibility of cryptic species in our western grisettes.
By: Debbie Viess (amanitarita)
2019-02-18 13:03:54 MST (-0700)

so, the answer to your questions are maybe.

but if so, pachycholea is no more likely than constricta.

as to amanita host trees … in my experience, many species occur with a wide variety of hosts, both hardwoods and conifers.

I once spent a couple of hours attempting to put all of the grisettes in a giant pile from an Arora Albion foray into piles of either constricta or pachycholea from the macro alone … and I couldn’t do it, at least with a strong confidence level.

It will of course help once we start running the DNA on everything here in the west, and using more than just ITS. Then we can look at the macromorph of known species and state with confidence what they really look like, in all of their manifestations.

Can A. constricta have a brown cap?
By: Alan Rockefeller (Alan Rockefeller)
2019-02-18 12:52:27 MST (-0700)

Or is it always grey?

And can it grow with conifer?

this was a somewhat ambiguous amanita.
By: Debbie Viess (amanitarita)
2019-02-18 12:35:28 MST (-0700)

but the pinched and flaring volva as well as the gray staining on the inner volva leaned me towards constricta.

are you having a pachycholea moment, Alan? your proposal here is not so unreasonable, but that tiny Sierra grisette??! AS IF!