Observation 142881: Amanita augusta Bojantchev & R.M. Davis

Amanita aspera, Amanita franchetii, or something else?
Found on east side of Mount Saint Helens, at about 4500 ft elevation.
Mixed short conifer, alder, huckleberry, etc. This area was covered by snow during the 1980 explosion, so shorter plants survived.
Flesh is soft.
Warts on cap brush off easily.
Taste is bland.
If I referred only to Arora, Mushrooms Demystified (1986), I would guess A. aspera. But Trudell & Ammirati, Mushrooms of the Pacific Northwest (2009), say A. franchetii or some other undescribed PNW species:
“Historically, the name Amanita aspera has been used for this species. More recently, it has been called A. franchetii, but that name too might be incorrect—we could have an undescribed species here in the PNW.”
But now that I read the MO notes on the name Amanita aspera sensu auct. amer., it appears that A. aspera is wrong.



Proposed Names

-13% (2)
Used references: See notes
60% (2)
Recognized by sight: A newer name for this mushroom

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Thank you!
By: Denise Rhiner (denise7306)
2013-10-15 00:42:42 EDT (-0400)

Super helpful information! Amanita augusta it is.

new species as of april
By: Jeff Hitchcock (JHitch)
2013-10-14 23:59:07 EDT (-0400)
More on A. franchetii not being valid in PNW?
By: Denise Rhiner (denise7306)
2013-10-14 23:42:05 EDT (-0400)

Darvin, I am trying to understand why Trudell & Ammirati would include A. franchetii in Mushrooms of the Pacific Northwest if it was not a valid name in the region. Granted, they do acknowledge that the name may be incorrect and that it’s simply an undescribed species. However, it sounds as though you may have more information. Can you please expand on your comment as to why the name is not valid in the PNW? I am curious because I just picked an Amanita this weekend that I identified as A. franchetii. Thank you.

Thanks for the help
By: Joe Cohen (Joseph D. Cohen)
2013-08-16 12:56:25 EDT (-0400)

Thanks for pointing me the right way on this.

European names
By: Darvin DeShazer (darv)
2013-08-16 12:50:41 EDT (-0400)

Amanita franchetii is a valid name for a European mushroom but not valid in the PNW.

Created: 2013-08-16 12:24:11 EDT (-0400)
Last modified: 2013-10-14 23:59:53 EDT (-0400)
Viewed: 68 times, last viewed: 2018-04-05 02:20:37 EDT (-0400)
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