Observation 110066: Amanita flavoconia G.F. Atk.
When: 2001-06-24
Herbarium specimen reported

Notes: The index to all MOMS voucher specimens is located here.

http://www.momyco.org/displayVoucherList.cshtml

All vouchers include additional photos, micrographs, and a spore
description. Please consult this additional material before voting.

All of MOMS’ vouchers are secured at the Dunn-Palmer herbarium
at the University of Missouri in Columbia. Dr. Robin Kennedy is
the curator of the herbarium. If you would like access to
one of our specimens, or obtain a sample, contact Brad
Bomanz — bbomanz@momyco.org

Proposed Names

-8% (4)
Eye3
Recognized by sight
Used references
Based on microscopic features
0% (2)
Recognized by sight
5% (2)
Recognized by sight

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Patrick.
By: R. E. Tulloss (ret)
2012-09-17 12:06:03 CDT (-0400)

I’m taking advantage of your posting on this observation to respond to the idea that I might be mostly interested in DNA sequencing of specimens.

Let’s take the example of observation 110068 (a possible A. wellsii collection). What I am interested in with regard to seeing the voucher for that observation is to check the spores to verify the identification and, if all seems well with the ID, to put the MOMS collection on record on the wellsii techtab of the WAO site. This will expand the known range of wellsii.

I ask for specimens for a very wide range of reasons because I am involved in trying to build up data on organisms as they appear to humans (naked eye, hand lens, microscope, environment, range, etc.) as well as the information that we can get from genetic sequencing.

I understand that the North American MycoFlora project is looking for monograph-like websites that present the whole story of the organisms in a genus or family or some other grouping. In mid-July, I was told that WAO is an example of the sort of thing that, at present, the project folks have in mind for end products of the project. Hence, I want to continue to expand the data on the site with a view to covering as broad a range of taxonomic information as possible.

In order to do the best job I can with the time I have left, I have to spread out the number of reasons for which I would ask for a specimen. In my personal case (relying upon very helpful laboratories with their own missions and their own schedules and resources), DNA data can take a while to obtain and a while to get into order so that it can be confidently presented in a useful manner with minimal error. On the other hand measuring 20 spores can take less than an hour if the spores are distinctive (e.g., being more narrow than the average).

All data I have traditionally gathered is still playing its role in understanding and describing the organisms I study.

On MO, we users are trying to separate species (largely) from photographs (sometimes with supportive data). We can often make a lot of progress toward a good ID in that manner. In the case of Amanita with plenty of years of experience, one often can segregate a potentially new taxon with the naked eye. With the addition of microscopy and chemical tests, we go even further.

From a basic taxonomic point of view (grouping individual collections into species), some DNA sequences have (at least up to now) played an important role in testing groupings proposed on morphological grounds. DNA sequencing can be used to test the hypotheses that we call species. For example, we could ask this question: According to sequences of one or more genes, are all the collections placed in a given species more similar to each other than they are to any of the things excluded from the species?

Very best,

Rod

Thanks very much
By: Missouri Mycological Society Herbarium (MOMS_Herbarium)
2012-09-17 11:11:08 CDT (-0400)

I’m linking our MOMS herbarium voucher records to Mushroomobserver.
Your comments are welcome on any of the Amanita species, they are all
linked now.

Thanks,
Patrick Harvey

p.s. I’ll eventually be turning this account over to Brad Bomanz, who
administers our herbarium. Please let him know if you would like any
samples for sequencing.

I think David makes a good point. [BIG EDIT}
By: R. E. Tulloss (ret)
2012-09-17 11:03:55 CDT (-0400)

Amanita flavoconia [EDIT!] should be considered as a possible identification. The resolution could be as simple as checking the reaction of the spores to Melzer’s Reagent.

Very best,

R

Amanita frostiana…
By: Dave W (Dave W)
2012-09-17 09:27:40 CDT (-0400)

has a striate cap margin. This specimen appears to lack this feature.

Created: 2012-09-17 08:06:55 CDT (-0400)
Last modified: 2015-12-06 01:24:48 CST (-0500)
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