under oak, sandy loam soil, in oak-juniper woodland. RMC 1399 and 1400 found interspersed under the same oaks. Two red staining Amanitas, kinda neat.

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The material from the state of Tlaxcala mentioned below…
By: R. E. Tulloss (ret)
2020-05-29 06:04:15 CEST (+0200)

appears to be genetically distinct at this point in time.


We are posting the nrITS sequence from this material to GenBank.
By: R. E. Tulloss (ret)
2020-05-28 20:11:22 CEST (+0200)

Yes, it conforms to other sequences of Amanita flavorubens; however, within the species there are at least two populations. One population has a pretty much homogeneous nrITS; the other population seems to have infraspecific hybridization in its ancestry and the ribosomal DNA is not homogeneous. Nevertheless, the two groups fall into a single clade. I’m still working on getting the more than 60 nrITS and nrLSU sequences for flavorubens in order to submit. I’ll get the geographic range of the two populations worked out in the near future.


Yes, I think, Debbie.
By: R. E. Tulloss (ret)
2013-10-10 01:11:05 CEST (+0200)

I have material from Tlaxcala edo. submitted for sequencing. I don’t know if DNA can be obtained from the material yet.

Yes, it is a beautiful species.


nice! quite a broad range for this lovely amanita.
By: Debbie Viess (amanitarita)
2013-10-10 00:58:29 CEST (+0200)

and down into Mexico, I assume.

Hello, Bob.
By: R. E. Tulloss (ret)
2013-10-09 23:02:02 CEST (+0200)

This collection and eight others have been sequenced recently at the Univ. of Tennessee, Knoxville, under the direction of Dr. Karen S. Hughes. The sequences and a summary of results were received on the 1st of October while I was away from the office. The sequences come from material collected in Connecticut, Missouri, New Jersey, New Mexico, Ohio, and Pennsylvania. All this material was judged to be Amanita flavorubens prior to sequencing. All the sequences are in agreement. Hence, it would appear from this evidence that Amanita flavorubens as presently conceived in North America is likely to be a single species.

We got a very clean and complete “barcode” sequence from this collection.

Thank you for your contributions to our research.

Very best,


The material has arrived safely.
By: R. E. Tulloss (ret)
2012-09-28 20:00:11 CEST (+0200)

Thank you for including this very nice collection.


Created: 2012-09-13 23:53:14 CEST (+0200)
Last modified: 2020-05-29 06:07:32 CEST (+0200)
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