Observation 141693: Amanita rhacopus Y. Lamoureux nom. prov.
When: 2013-08-02

Notes: This was found growing with a small berry in the Rubus family. Stipe is 14 cm Cap has small brown warts. Base is a small sack spore print white.

Proposed Names

61% (2)
Eye3 Eyes3
Used references: Discussion with Dr. Tulloss
Based on microscopic features: Spores round but irregular

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
You’re welcome.
By: R. E. Tulloss (ret)
2013-08-04 15:13:02 CDT (-0400)

I’ve never heard of an Amanita growing with a rubus. There’s another item for research.

Very best,


Thanks Dr. Tulloss
By: Eddee (eddeeee)
2013-08-03 23:49:33 CDT (-0400)

Yes after doing some research I like that name for this observation. I’m going with it. This is the first year this has appeared here on my property. This is the 4th one in a 10 foot area. There is another area on the property that 3 have popped up, They have been popping up since about July 4th. They seem to be associated with a brier in the Rubus family. In this observation There are several maples near by,several Tulip Poplars and a cherry tree. I carefully dissected through the soil and was able to fallow roots it was attached to, to this little Rubus sp plant. At the second spot this little Rubus is growing as well. Im going to go ahead and post a pic of the Rubus plant.I have no idea what species it is. It makes a very small/tiny blackberry. Thanks for your input Always, Eddeee

Hello, Eddee. [EDITED]
By: R. E. Tulloss (ret)
2013-08-03 22:28:50 CDT (-0400)

I think you made a move in the right direction for identification; unfortunately, despite the name appearing in U.S. field guides, A ceciliae is a European or Eurasian species.

I am not sure of the identity of the mushroom in your pictures; however, it is very close to A. rhacopus Lamoureux.

Very best,


Created: 2013-08-02 22:22:46 CDT (-0400)
Last modified: 2013-08-04 15:11:59 CDT (-0400)
Viewed: 40 times, last viewed: 2017-06-16 09:43:18 CDT (-0400)
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