Observation 138822: Amanita “sp-amerirubescens05”
When: 2013-07-04
No herbarium specimen

Proposed Names

94% (3)
Eye3 Eyes3
Based on chemical features: Based on nrITS and nrLSU gene sequences from this material. See initial comment, below.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
You’re welcome, Rod.
By: Dave W (Dave W)
2014-03-24 19:49:53 PDT (-0700)

I remember the spot on my property where I found this one. The dominant tree type there is Shagbark Hickory. There’s also a large Black Walnut tree in the vicinity. This specimen seemed a bit past prime. But the striate margin and thin stature seemed unusual for a blusher. Pleased to learn that the material proved useful.

This is the seventh rubescent taxon identified in the work of the last year or two.
By: R. E. Tulloss (ret)
2014-03-24 15:58:00 PDT (-0700)

This work has been supportedly in a very kind manner by yourself and a number of other MO participants. All of you have made a tremendous difference. I am able to see material from a much wider geographic range than would ever have been possible before the internet…and MO in particular.

More kudos to Nathan Wilson and company.

Thanks to you, David, and to all my other correspondents using MO.

Very best,


This material has been sequenced.
By: R. E. Tulloss (ret)
2014-03-24 15:43:07 PDT (-0700)

Thank you for sending the voucher specimen for this observation to me, David.

This is an apparently uncommon rubescent entity from eastern North America. It was previously detected (also by DNA sequencing) in a collection sent to me by Stephen Russell from Montgomery Co., Indiana. Steve’s and yours are the only collections known to me.

The thin cap with a striate margin might be a useful field character, but we don’t know enough about the species yet.

I’ll be checking into the spores soon in hopes that we can get some morphological characteristics of the spores that will be of use for recognizing the species.

Karen Hughes is (again) the person whose support has made it possible to get both ITS and LSU sequences for this taxon.

I’ll post our temporary code for the entity here.

Very best,


Created: 2013-07-06 12:18:32 PDT (-0700)
Last modified: 2014-03-24 19:55:50 PDT (-0700)
Viewed: 54 times, last viewed: 2016-10-22 09:30:02 PDT (-0700)
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