While many people claim to have seen or collected the taxon (or taxa) cited above, I have yet to find more than a very small number of white-capped collections (no color visible in the area of the pileipellis when the cap is sectioned) that fall into the large clade of North American muscaria-like taxa of Geml, Tulloss, Laursen, Sazanova and Taylor (2008) or satisfy morphological criteria to be a candidate for diagnosis as A. chyrsoblema. My colleagues and I are looking for a larger set of samples before proposing that the name A. chrysoblema can be used without ambiguity.
I ask that field notes and a photograph be available for any collection submitted. Under appropriate conditions, a well-documented collection could be made an epitype of chrysoblema.
The material must come from North America. We do not require that the stem be proven to be yellow-staining because it is known that amanitas exhibit a yellow-staining syndrome that seems associated with one or more organisms other than the Amanita involved. Submitted collections should include at least one specimen that has ejected spores.
Amanita chrysoblema was originally reported with Pinus sylvestris from Washtenaw County, Michigan, USA. Amanita muscaria var. alba Peck was first reported from Albany County, New York, USA.
We are aware that a white color variant of the (largely) Eurasian (true) A. muscaria exists and may occur in northwestern North America. Such material is excluded from our request.
Sole nrITS posted that may represent the taxon/taxa of interest is EU071911. It appears to be incomplete at the 5' end. It is 647 characters long. Deposited in GB in 2008.
Sole nrLSU posted that may represent the taxon/taxa of interest is EU071984. It is 623 characters long. Deposited in GB in 2007.
Thank you in advance
Rod Tulloss
https://www.flickr.com/photos/19369983@N06/30154156142/
See also on Mycoquebec.org, Amanita muscaria var. alba is frequent in Abitibi, a region 500 km north of Montreal. See on Mycoquebec.org, in particular the pictures from Patrick Poitras and Herman Lambert. I can provide contact email if interested.
http://www.mycoquebec.org/bas.php?post=musca&l=r&nom=Amanita%20muscaria%20var.%20alba%20/%20Amanite%20tue-mouches,%20vari%C3%A9t%C3%A9%20blanche&tag=Amanita%20muscaria%20var.%20alba&gro=13
Mes remerciements, Jacques.
Your response is very positive. I would like email contact information. If you would like to transmit such information less publicly, it would be fine to send it to me off-line.
Very best,
Rod
P.S. After further thought, it strikes me that the collecting region you describe might be producing white variants of the true A. muscaria instead of, or in addition to, material of A. chrysoblema. In either case the materials will provide useful information. - R
Sorry, I do not know of any such material (or records) in Norway.
Best regards, Gro
To Heinz and Gro,
Thank you very much for your efforts.
My greetings and very best wishes to you both.
Rod
I have a white "muscaria" collection from Alaska, with a photo, but it is at PRM. I have no idea what it is.
Hello, Jan.
I'd be glad to look at the image as a starter.
Very best,
Rod
Thank you very much, Jan. Did you happen to sequence this material? Did you cut the material longitudinally to aid drying? If you did the latter, did you notice any pigment in the pileus in or near the pileipellis? Finally, how far north were you when you collected this material? Near Juneau? Near Anchorage? Do you have lat/long information? The reason for these questions is to assess whether you were in a region in which pigmented material is more likely to be the true A. muscaria or the red variant of the "dominant North American muscarioid" (i.e., material that could be called A. muscaria subsp. flavivolvata). I look forward to knowing more.
Very best,
Rod Tulloss
Dear Rod,
I understand your interest by my memory is limited :-( The collection is from Fairbanks. As you can see, there is a shred of a possibly rosa tone in some segments of caps but I dont remember any colors. In that area, I saw also Amanita regalis (ITS-LSU sequence recently submitted to GenBank as LT594941*). Unfortunately, I think I made no description but I will check my notes next week. Do you need the ITS sequence? If so, could take a small piece of material at PRM and process it for you (not quickly, but by the end of the year).
*I also submitted ITS-LSU of a Czech Amanita gemmata: LT594942; it was in a paper focused on ectomycorrhizae, not Amanita.
Sorry, no such collection in TMI and I haven't encountered such Amanita in Japan yet.
Best regard, Eiji
Thank you, Eiji. I appreciate your efforts.
Sincerely,
Rod
Reply to Jan's latest contribution:
I have added some summary information concerning the minimal amount of nrITS and nrLSU data that we have derived from white material of the sort for which we are searching. At present, these sequences fall into the the cluster for sequences representing all three color variants of the "dominant North American muscarioid." An nrITS sequence from additional white material could be useful to us. Thank you for your offer, Jan.
R
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