Observation 51154: Gastroboletus turbinatus (Snell) A.H. Smith & Singer

When: 2010-08-21

Collection location: Cracker Lake Trail, Glacier National Park, Montana, USA [Click for map]

48.75948° -113.62127°

Who: Johannes Harnisch (Johann Harnisch)

Specimen available

Location accurate to about 200 meters (600 feet) could not get a GPS reading any closer to the location because of the trees blocking view of Satellites I guess.

Found under Balsam fir http://mushroomobserver.org/51152?q=1UGA .

Notice interesting red color of stipe and bluing of yellow cuticle

Proposed Names

82% (1)
Recognized by sight
85% (1)
Used references: Michael Castellano (trufflercaz)

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thank you Michael! :D
By: Johannes Harnisch (Johann Harnisch)
2012-10-11 07:31:45 PDT (-0700)

I am re-motivated to hunt and truffles

Gastroboletus turbinatus – confirmed id
By: Michael Castellano (trufflercaz)
2012-10-10 11:19:49 PDT (-0700)

Hi Johann,

I ran across this collection in the backlog at my lab.

Matt does not usually do much identifications so best to send things to me in the furture for a more timely response.

The spores are not trucate and measure about 16.5-17.5 × 7 microns. It keys out nicely to G. turbinatus

the bluing reaction is dependent on age of specimen and local environmental conditions the fact that there was some bluing is important

I have assigned herbarium number 35959 to it for further reference.

The location of the collection makes it very desirable. thanks for sending it in.


Michael Castellano
USDA Forest Service
3200 Jefferson Way
Corvallis, Oregon 97331

Could try calling him.
By: Daniel B. Wheeler (Tuberale)
2011-01-27 23:59:18 PST (-0800)

I think Matt Trappe is currently living near Philomath, Benton Co., OR. Other than the address for mailing material to him, I have no contact info. Sometimes it takes several months to get an ID. And if this does happen to be a new species, he may be waiting for James Trappe to take a look. Be patient.

what should I do?
By: Johannes Harnisch (Johann Harnisch)
2011-01-27 20:01:14 PST (-0800)

I have been waiting and waiting and have not heard one single word from Matt I have sent him many specimens
int several times but not reply, or any thing from him…..
How long does it usually take?
I am rather curious my self as to what this is and curiosity has been keeps eating at me now and then as there ID :D

Any ideas????

for my information- Packaged and going to be sent to Matt Trappe tomorrow
By: Johannes Harnisch (Johann Harnisch)
2010-09-22 19:44:14 PDT (-0700)

I will post more about it when Matt writes back

Hope you share when you find out, Johann.
By: Daniel B. Wheeler (Tuberale)
2010-08-25 23:53:21 PDT (-0700)

This looks like a new one, at least to my uneducated eye.

Okay I will do that
By: Johannes Harnisch (Johann Harnisch)
2010-08-23 17:37:11 PDT (-0700)


I couldn’t be sure of it, Johann.
By: Daniel B. Wheeler (Tuberale)
2010-08-23 13:29:35 PDT (-0700)

But I would suggest mailing it to Matt Trappe, c/o Forestry Sciences Lab, Oregon State University. This is so rarely seen, along with Gastroboletus rubra, that it will become an important addition to the herbarium collection. Matt’s complete address can be found at NATS.org

i sure did!
By: Johannes Harnisch (Johann Harnisch)
2010-08-23 08:17:42 PDT (-0700)

do you want a slice?

Hope you collected this.
By: Daniel B. Wheeler (Tuberale)
2010-08-22 23:22:47 PDT (-0700)

Looks like one of the rarer Gastroboletus or Gastrosuillus species. Without an actual collection, cannot be certain. Not enough bluing of cut surface to be G. turbinatus in my opinion. Would have expected much more reddening on G. rubra. If I had to guess, I’d suggest Gastroboletus subalpinus: but I have never seen that species, and have only read about it.

Created: 2010-08-22 18:35:52 PDT (-0700)
Last modified: 2012-10-10 12:20:16 PDT (-0700)
Viewed: 235 times, last viewed: 2017-06-07 20:00:29 PDT (-0700)
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