Observation 140446: Amanita “sp-amerirubescens02” Tulloss crypt. temp.

On moss covered ground at the base of balsam fir (Abies balsamea) in mixed woods including hemlock and white cedar. Cap 62 mm. wide, convex, flesh colored with pinkish tones, staining quickly red, buff patches, cap flesh above stipe 9 mm. thick. Gills whitish. Stem brownish on lower two thirds, paler above, 96 mm. from bottom of cap flesh to top of bulb, 9 mm. wide a mid-height. Bulb 18mm. long by 19 mm. wide at broadest part, no volval remanants seen on stem or bulb(heavy rain overnight). All parts staining quickly red when cut or bruised.
These are abundant now in my area in large fruitings but I find it difficult to collect a mature specimen that isn’t maggot ridden, parasitized by Hypomyces hyalinus, or destroyed by slugs. I took the largest of these three buttons as a specimen to measure and dry. This specimen will be dried and sent to Rod Tulloss for his study of rubescent taxa in the eastern US, see his comments on MO 140191.
P.S. Rod, it is possible that the Hypomyces mold had begun to attack the bulb of this specimen as there was some white powdery residue on part of the bulb before I put it in the dehydrator. Do you still want it? Also, I reduced the image size for posting but have the originals if you need them for any of the specimens I send you.

Proposed Names

91% (2)
Eye3 Eyes3
Based on chemical features: Based on DNA sequences for ITS and LSU genes.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
This material has been sequenced.
By: R. E. Tulloss (ret)
2014-03-24 04:24:54 IST (+0530)

We have nice sequences for both ITS and LSU genes from this material.

You can see your material listed as “material examined” here:


Thanks again for sending this well photographed material. I’m planning to use some of your photos to illustrate this species.

Very best,


Thanks Teresa,
By: groundhog
2013-08-01 19:40:45 IST (+0530)

This material has been received, accessioned to Rod’s herbarium, and scheduled for sequencing.

Thank you again, Teresa.
By: R. E. Tulloss (ret)
2013-07-22 22:20:03 IST (+0530)

There are folks on MO who are very intense about what name to use. Some times the crowd turns against provisional names and sometimes toward them. I don’t want to get into a debate on the subject. I provide provisional names because many persons doing inventories want a name that is distinct from misapplied European names…of which, it is now pretty clear, that we have been misusing many.

When we sort out the morphology and the DNA further, we can move to formally publishing provisional names. Now, it seems hasty to do so without a good set of data. And the more tools that we get, the more data is possible.

I will check the new posting.

Very best,


Hi Rod,
By: Terri Clements/Donna Fulton (pinonbistro)
2013-07-22 17:59:58 IST (+0530)

This was mailed to you today with two others.

What name should we use on MO for the rubescent taxa in the eastern US for now: Amanita amerirubescens or Amanita rubescens sensu auct. amer.?

Also, if you get a chance would you take a look at MO 140545 which I just posted?



It’s OK with the possible hypomyces on it.
By: R. E. Tulloss (ret)
2013-07-20 20:42:13 IST (+0530)

We’ll sample the gills from the other “end” of the mushroom for DNA. Also the sampling process does a pretty good job of (chemically) ignoring DNA from an Ascomycete. :) [It’s amazing what old guys can still learn. Ain’t it?] :)

Thanks for thinking of our project when your collecting, photographing, and posting.

I love the shot of the specimens in the moss.

Very best,


Created: 2013-07-20 18:40:17 IST (+0530)
Last modified: 2018-01-04 03:52:37 IST (+0530)
Viewed: 187 times, last viewed: 2018-04-13 16:49:48 IST (+0530)
Show Log