Observation 137110: Amanita rubescens var. alba Coker

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I’m very glad to hear that you have the material.
By: R. E. Tulloss (ret)
2013-06-21 21:37:24 PDT (-0700)

Frankly, I really can’t be sure what you have from the photos; but that makes it all the more interesting in terms of investigating what it could be. It would be great to have the material.

It seems like a lot of people interested in mushrooms want to see what the genetic side of the story is all about. Where is the course you’re planning to take?

Thanks very much for your interest in Amanita related projects.

Very best,


Well thanks for speaking up again Rod!
By: Martin Livezey (MLivezey)
2013-06-21 16:45:55 PDT (-0700)

I have both ‘rubescens’ from the observations here on my sketchbook – they are quite dry. I will collect and post some more – including the ‘alba’. Glad to help this project and I may be able to sequence similar myself this fall for the lab class I am fortunate to be teaching – but more of that later when it becomes ‘official’.

By the way, I have dried A. - from the Delaware shore I collected last summer following a similar conversation – did you want that?

Hi, Martin and David.
By: R. E. Tulloss (ret)
2013-06-21 09:16:39 PDT (-0700)

I would have said something here last night; however, I noticed that Martin hadn’t ticked the box for “have dried specimen.”

The pictures are interesting Martin. David is correct we are working with Drs. Karen Hughes and Ron Petersen on several species claimed to occur in both Europe and North America (like “rubescens”). They need material, I have material in my herbarium. They have a fine lab at the Univ. of Tenn., Knoxville. That can create the DNA sequences they need, and I can eventually include those sequence from material I have sampled for them on the WAO site and, thus, achieve one of the North American Mycoflora projects stated goals of getting reliable names on sequences for North American fungi. It’s a good deal all ’round. The last couple of weeks we have started sampling everything rubescent in my herbarium and looking for material from states that are not covered well by the collection in the herbarium. For some reason, my home state of Maryland is not covered terribly well.

So if you do find and dry material that is rubescent (any species), material that is similar to A. solaniolens, material that older books would call “citrina,” material that you might call “bisporigera” or “elliptosperma,” and material that you would call “porphyria,” I’m very interested in receiving a mature (but not old) fruiting body in these categories.

We already know that there are at least three species to with the name citrina f. lavendula is presently being applied and are particularly interested in gathering citrinoid material this year to fit into a fixed schedule of research.

We would be very happy to have material from scattered sites of the above should you have the time and interest to day them and send them. Posting image on MO is a good way for all of us to track what material has been sent, what it looked like, and what happened to it after it was dried and sent off for study.

Very best,


Martin, I believe that…
By: Dave W (Dave W)
2013-06-21 06:23:45 PDT (-0700)

Rod is seeking collections of rubescent types for study.

That is interesting
By: Martin Livezey (MLivezey)
2013-06-21 05:52:41 PDT (-0700)

I thought I remembered that name from somewhere. So is there any suggestions of a connection between the 3 species: A. amerirubescens, A. amerirubescens var. alba, and A. flavorubescens? They look quite distinct – no intergrading – but all apparently related and fruiting at the same time and place.

Thanks Dave W for the suggestion of an ID.

Created: 2013-06-20 19:08:51 PDT (-0700)
Last modified: 2013-06-21 05:53:45 PDT (-0700)
Viewed: 67 times, last viewed: 2018-05-20 20:55:20 PDT (-0700)
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