Observation 48391: Amanita amerimuscaria Tulloss & Geml nom. prov.

When: 2009-11-03

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

Who: Hamilton (ham)

No specimen available


[admin – Sat Aug 14 02:07:45 +0000 2010]: Changed location name from ‘Westmoreland County, PA’ to ‘Westmoreland Co., Pennsylvania, USA


Copyright © 2010 Hamilton

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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By: Erlon (Herbert Baker)
2010-07-11 16:41:06 CDT (-0400)

Yellow in the superior region of the stipe sounds like persicina, there are plenty of photos here at MO of persicina with defined rings at its base, also he said these are from the same collection as his other observation, which are clearly reddish, the red form of amerimuscaria does NOT occur in the east.

At the least, this collection highlights the need for a more determinative methodology.

Well-formed rings on base of stipe implies….
By: R. E. Tulloss (ret)
2010-07-11 14:03:03 CDT (-0400)

probably not persicina.


The ring…
By: Hamilton (ham)
2010-07-11 11:38:12 CDT (-0400)

…on most of these are white below, yellow on the top. Then yellow all the way to the apex of the stem. Some are completely white, ring & stem entirely.

Amanita persicina
By: walt sturgeon (Mycowalt)
2010-07-11 11:26:29 CDT (-0400)

is common in the Southeast and I do not see it (or do not recognize it) in the muscaria types I find in Ohio/Pa./WV and in the NE states. So without firsthand experience with it, I would go with Rod’s description " The ring of this species is white above and yellowish below; it is fragile and positioned at about midstipe, with a thick margin. Often it is not seen in fresh material."

Well yeah…
By: Hamilton (ham)
2010-07-11 11:15:17 CDT (-0400)

…but on A. persicina isn’t it supposed to deteriorate pretty quickly, Walt? These still have them pretty late in the game.

annulus is is present on both
By: walt sturgeon (Mycowalt)
2010-07-11 11:11:54 CDT (-0400)
A. persicina…
By: Hamilton (ham)
2010-07-11 11:03:05 CDT (-0400)

…is supposed to be lacking an annulus right? These all got ‘em. I’m going to go make a sandwich now.

By: Hamilton (ham)
2010-07-11 10:44:02 CDT (-0400)

Red or yellow in or out of the shade really.

By: Erlon (Herbert Baker)
2010-07-11 10:41:21 CDT (-0400)

In that case, these could be A. persicina also.
Shots of the base really helps when trying to identify these Amanitas.
Did you find some of the other younger A. persicina to yellow quickly like this when in the sun?

By: Hamilton (ham)
2010-07-11 10:33:22 CDT (-0400)

…same place as the A. persicina, or whatever they are. Same day, same two trees.

Nice Eastern A. amerimuscaria Button
By: Erlon (Herbert Baker)
2010-07-11 10:17:17 CDT (-0400)

How close was this to your A. persicina collection?

Created: 2010-07-11 02:20:04 CDT (-0400)
Last modified: 2010-08-14 14:31:36 CDT (-0400)
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