Observation 51157: Gautieria monticola Harkn.
When: 2010-08-21
(48.79641° -113.67709° )
Herbarium specimen reported

Notes: found under Alpine fir http://mushroomobserver.org/51152?q=1nPT

Proposed Names

28% (1)
Recognized by sight: Without doubt, Gautieria.
61% (2)
Eyes3
Recognized by sight
Based on microscopic features
56% (1)
Used references: Light yellow spore coloration plus longitudinally striate ridges make G. pterosperma the most likely candidate. G. monticola unlikely, as the spores (at least as shown in Field Guide to North American Truffles by Trappe, Evans, and Trappe, c. 2007) are light brown to transluscent brownish. Can’t see any size on the spore micrographs, so can’t be absolutely certain. Additionally, there are many other Gautieria found in Idaho and (presumably) Montana, which have been described only in Smith, Smith & Weber’s “How to Know the Non-Gilled Mushrooms”, 2nd edition, c. 1981. These include: Gautieria morchelliformis var. magnicellularis, with spores 17-24 × 12-15 (18) microns, but usually with overly large chambers which make the sporocarp look similar to a hypogeous morel; Gautieria gautierioides, with spores 15-21 × 9-11 microns, reported from Oregon, Idaho and California to date. In my opinion, the width to length in the microphotographs is more likely to match G. gautierioides. I can find no reference to the spores being light yellowish, though.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Gautieria sp.
By: Michael Castellano (trufflercaz)
2012-10-10 11:24:18 PDT (-0700)

Johann,

This is indeed a Gautieria species but the genus is currently under revision by Jack States and others and a number of species have been split out from Gautieria monticola. AT the current time best to wait for the dust to settle on the revision before we put a name on it.

caz

Packaged and going to Matt tomorrow
By: Johannes Harnisch (Johann Harnisch)
2010-09-22 20:00:41 PDT (-0700)
I’d sent it to Matt as well.
By: Daniel B. Wheeler (Tuberale)
2010-08-25 11:43:10 PDT (-0700)

Spores look yellowish to me. Compared with the spores shown in Field Guide to North American Truffles, spores are yellow(ish). Brown-spored Gautieria, at least as shown in the Field Guide, are distinctly dark brown, and have no hint of yellow to my eye. The spores on this are definately with yellow or yellow highlights.

Spore measurements are the best way to distinquish the species of Gautieria. Also, there are some rarely collected varieties, some not yet named in science, which are at the OSU Herbarium.

Spores are brownish
By: Johannes Harnisch (Johann Harnisch)
2010-08-24 17:46:09 PDT (-0700)

I do not have a micrometer but I can send a slice to some one who can measure it….
or should I send it to Matt Trappe ?

Thank you I am going to upload picturesof the spores now! :D
By: Johannes Harnisch (Johann Harnisch)
2010-08-24 08:44:14 PDT (-0700)
Spore size
By: Daniel B. Wheeler (Tuberale)
2010-08-23 13:19:45 PDT (-0700)

from Field Guide to North American Truffles, by Trappe, Evans, and Trappe (c. 2007) are:

G. monticola: 10-16 × 7-9 microns, common in mountains of PNW, elongate citriform, longitudinally ridged

G. parksiana: 14-24 × 9.5-12 microns, narrowly ellipsoid, longitudinally rigid (I think this is a typo, should have said longitudinally ridged)

G. pterosperma: 9-15 × 8-14 microns, Ellipsoid to subglobose, light yellow, with tall longitudinal ridges (“wings”) in KOH solution; known from California and Oregon.

not really
By: Johannes Harnisch (Johann Harnisch)
2010-08-23 08:13:27 PDT (-0700)

the older specimens did stink though, a rather unpleasant potent smell, but it is gone from at least some of the dried specimens.

any microscopy help ?

Odor?
By: Daniel B. Wheeler (Tuberale)
2010-08-22 23:10:53 PDT (-0700)

Did this, by any chance, have an odor similar to fresh asphalt?

Created: 2010-08-22 18:53:27 PDT (-0700)
Last modified: 2011-04-19 16:04:20 PDT (-0700)
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