Observation 10362: Amanita Pers.

When: 2008-09-02

Collection location: Rhode Island, USA [Click for map]

Who: Derek (DerekRihc)

No specimen available

This mushroom is definitely an Amanita. I suspect it is A. Muscaria var. alba because it has all the defining characteristics of A. Muscaria, with white coloring. The stem is beefy, unlike a lot of other white amanitas, and also has the shaggy area above the base. I do find other Amanitas here that may resemble A. Muscaria (sometimes white, sometimes yellow), however, their warts are easily rubbed off, while on these specimens the warts are much more bound to the cap. Also, the other varieties I find have thinner stems, and often do not show the shaggy area at the base.



Proposed Names

-63% (3)
Recognized by sight: White warts, shaggy area above base, veil remnants, white cap.
Used references: mushroomexpert.com
-22% (3)
Used references: Close to description & pictures at: http://www.mushroomexpert.com/amanita_cokeri.html How large were they?
45% (2)
Recognized by sight: It is an Amanita, darnit. :-)

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Taking a fresh look in Jan. 2009
By: R. E. Tulloss (ret)
2009-01-19 14:47:34 EST (-0500)

I think there are perhaps as many as three different species illustrated on this page.


Neither muscaria nor cokeri….
By: R. E. Tulloss (ret)
2008-09-14 11:49:42 EDT (-0400)

This seems to me to be close to Amanita canescesns which was rather common this summer in Connecticut (at both the NEMF and COMA forays). I don’t see the fibrils on the stipe turning orangish or “golden pink” as would be common in canescens. Take a look at the pictures of cokeri and canescens on the “Amanita Studies” web site.

The last pic 19496 seems to be a different species.


these species can look similar…
By: Debbie Viess (amanitarita)
2008-09-09 17:16:14 EDT (-0400)

…but muscaria var. alba will have a rounded base to the bulb, whereas cokeri is more rooting; I can’t really tell from your photos. Universal veil material (warts) should be easily removeable in both cases, unless weather was very dry.

Meltzer’s solution on a spore print would tell you for sure: only the cokeri spores would turn blue (an amyloid reaction).

Created: 2008-09-03 01:37:13 EDT (-0400)
Last modified: 2008-09-03 15:12:22 EDT (-0400)
Viewed: 108 times, last viewed: 2018-08-01 21:18:14 EDT (-0400)