Observation 22639: Amanita Pers.

When: 2009-06-29

Collection location: Fayette Co., West Virginia, USA [Click for map]

Who: Eddee (eddeeee)

No specimen available

Found this growing under mixed woods of oak hickory on the side of a path. It has a tendency to stain yellow slowly after it is bruised. The volva is a bulb not sac like. spore print cream.

[admin – Sat Aug 14 02:00:37 +0000 2010]: Changed location name from ‘Gatewood Rd off of Wolf Creek RD Fayette Co. West Virginia’ to ‘near Gatewood Rd. and County Route 9/1, Fayette Co., West Virginia, USA

Proposed Names

-24% (3)
Recognized by sight: found growing under mixed hardwoods
Used references: Rodgers mushrooms
Based on microscopic features: spores broadly elliptical nonamyloid spore print cream
Based on chemical features: bruising yellow
37% (4)
Eye3 Eyes3
Recognized by sight: yes this is defendant an Amanita
-42% (4)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
amerirubescens often has warts that are yellow at first…
By: R. E. Tulloss (ret)
2009-10-04 22:12:08 CDT (-0500)

The yellow warts do not IMPLY that the taxon is flavorubens. From the cap color, it seems much more likely (to me) to be amerirubescens.


a bulb is not a volva
By: R. E. Tulloss (ret)
2009-06-30 22:19:14 CDT (-0500)

Despite the fact that some field guides confuse the two, a bulb on the stipe base is not a volva. Amanita crenulata does not have yellow warts; its volva is powdery and sometimes remains on top of the bulb. The annulus of A. crenulata doesn’t have yellow volval material on the underside or on the edge; in fact, the annulus usually doesn’t persist; and is not as robust as shown in the good photographs posted with this observation.

Amanita franchetii sensu H. D. Thiers does not occur in the eastern part of the U.S.; moreover, it doesn’t have the cap colors visible in these photographs. I don’t see any yellow staining in the pictures.

Very best,


where is Ret?
By: Gerhard Koller (Gerhard)
2009-06-30 15:47:23 CDT (-0500)

I am still not convinced if this is not within the range of this species … and A.franchetii in the European sense (formerly A.aspera)can turn yellow too and is much brighter in color than the Californian franchetii which seems to be our variety franchetii var.queletii. But let Ret have the last word.

sorry guys, not a franchetii…
By: Debbie Viess (amanitarita)
2009-06-30 10:29:40 CDT (-0500)

fer one thing, they have amyloid spores and are in section validae like your amerirubescens. franchetii also doesn’t bruise yellow and doesn’t have a swollen base like your mushroom; they also do have yellow bits of universal veil at the base of and along the stipe. and then of course we lack a good name for “our” franchetii" here in N. America, but that’s a whole nuther issue.
“Franchetii” is a common Western mushroom, don’t know about its distribution in other places.

yes i think your right
By: Eddee (eddeeee)
2009-06-30 08:24:54 CDT (-0500)

This looks very mush like A, Franchetii but According to my field guides its more of a northern species that is somewhat uncommon but who knows in the world of amanitas bukt ill think ill go with it

Could this be
By: Gerhard Koller (Gerhard)
2009-06-30 07:27:33 CDT (-0500)

the American version of A.franchetii?

Amanita amererubescens ??? i dont think so
By: Eddee (eddeeee)
2009-06-29 21:22:11 CDT (-0500)

IM not sure about that This particular specimen doesn’t turn red any where but stains a bit yellow on the stem and bulb.Also the warts on A. amererubescens are easily removed and these are pretty tough. The spores on A. amererubescens are amyloid where as The spores in this spacemen are non amyloid. So you would have to conclude that it is not A amereubescens.

nice Eddee.
By: Debbie Viess (amanitarita)
2009-06-29 12:07:39 CDT (-0500)

I am not familiar with this amanita. Curious that it stains yellow. Rod lists it as a common eastern fall mushroom…unusually early this year?

Created: 2009-06-29 10:54:42 CDT (-0500)
Last modified: 2011-03-13 21:04:02 CDT (-0500)
Viewed: 137 times, last viewed: 2017-06-06 00:10:55 CDT (-0500)
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