Observation 185486: Amanita pachycolea D.E. Stuntz

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Thanks dkentca7
By: groundhog
2014-11-25 15:43:40 CST (-0500)

This material has been received and accessioned to Rod’s herbarium. We have also scheduled it for DNA sequencing.

Local fungal diversity survey programs can be valuable to the people involved.
By: R. E. Tulloss (ret)
2014-10-25 21:10:16 CDT (-0400)

The more detailed knowledge accumulated by participants in such a program the more meaningful the program’s results. A beneficial positive feedback loop develops. The more expertise the greater the desire to do more and better work on the project.

I would be very happy to share what I learn about this specimen. I suspect that it will be an undescribed species of sect. Vaginatae. There are a very large number of undescribed __Vaginatae)) in North America alone.

I am interested in documented material of species of that section.

I just finished working with a good team on a first genetic survey of section Caesareae (including calyptroderma). There are useful sequences now for many of the Caesareae in GenBank, very often for multiple genes.

I am always interested in Amanita collections. Right at the moment, I would refer collections of Caesareae to Santiago Sanchez who has been working in the laboratory of Dr. Jean-Marc Moncalvo in Toronto. If you contact me through the email function of MO, I can send you pdfs of the recent paper of Sanchez et al. as well as another recent paper formally naming A. pruittii. I don’t know what Sanchez’s current needs are for additional material. He will be able to tell you if he would like material of calyptroderma.

In addition to the Vaginatae, I have recently been working on a number of other groups: citrina-like taxa, rubescens-like taxa, and ocreata-like taxa. If you post material on MO, and call my attention to it, I will do what I can.

Very best,


Amanita identification
By: dkentca7
2014-10-25 18:59:50 CDT (-0400)

I will dry my specimen and send you one half, we are doing a study of fungi of our area and would appreciate your help identifying this amanita. We are currently having a large flush of amanita calyptroderma, any interest in those?

I think that A. pachycolea should have a much darker cap.
By: R. E. Tulloss (ret)
2014-10-25 16:51:42 CDT (-0400)

If you would be willing to send me at least part of your collection (say split down the middle top-to-bottom so that all tissue are represented), I would like to include it in my study of sect. Vaginatae. Any findings will be reported back to this observation, as the folks in the group I work with usually do. I have done a study of the type collection of pachycolea; so there is the possibility of a useful morphological comparison. We are also in the process of accumulating a DNA sequence library for the Vaginatae based on types and accurately identified collections. Your material would play a role in this project.

Very best,


Created: 2014-10-25 13:50:43 CDT (-0400)
Last modified: 2018-01-05 13:40:45 CST (-0500)
Viewed: 42 times, last viewed: 2018-01-05 14:00:09 CST (-0500)
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