Observation 79690: Tricholoma (Fr.) Staude

Leon Shernoff recognized it, Sandi Smith found it.

Species Lists



Proposed Names

-60% (6)
Recognized by sight: fat, rooting stipe, mostly buried in ground. fibrillose cap, purple gray upper stipe.
Based on chemical features: smells like grape soda.
-49% (3)
Recognized by sight: The largest of the three specimens had the characteristic mostly-subterranean stalk that really swells out about a cm below the cap; it looked like an old-fashioned glass pop bottle — as much as they got out of the ground. And the grape-soda smell was verified by several people.
29% (1)
Eye3 Eyes3
Based on microscopic features: Desjardin scoped this. too young for spores. micro-features a better match for Tricholoma.
Based on chemical features: smells like grape soda!

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
glad to hear it is getting examined.
By: Debbie Viess (amanitarita)
2011-10-17 19:39:30 PDT (-0700)

they all seem a bit immature for spores, but perhaps other fine details will tell.

By: Danny Newman (myxomop)
2011-10-17 19:37:00 PDT (-0700)

was in class today. I don’t know if it went with Sandi or Dennis, but the impression I got was that is was going to be scoped soon.

ps: definitely grape soda, but only for the first whiff. harder to detect after that.

By: Darvin DeShazer (darv)
2011-10-17 18:57:47 PDT (-0700)

Debbie has a microscope, so…..
Lets see some photos or at least hear about the micro-characters.
I assume the host was NEVER found. Squamanita is a parasite and if S. odorata, it should be on Hebeloma mesophaeum.

It has some definite features of Squamanita, and none of any other known taxon
By: Leon Shernoff (mushroomthejournal)
2011-10-17 14:34:58 PDT (-0700)

So, it’s not a perfect match for the description in that it’s not scaly (though of course scales wash off when there are abundant rains, as there had been in this area). But the bare cap is the right color, and these other features fit.

I can understand if you don’t want to call it S. umbonata; but it has several features that are almost unique to Squamanita, and none that would indicate any other genus.

three fruit bodies were found…
By: Debbie Viess (amanitarita)
2011-10-17 09:49:17 PDT (-0700)

two went to SFSU yesterday; one will be at UC Berkeley tomorrow night. Somebody might recognize it (or be willing to do the DNA).

Curious critter.

By: Christian (Christian Schwarz)
2011-10-17 09:37:50 PDT (-0700)

That last question is the tough bit… I don’t know what this is.
Noah and I talked about it in the car this morning and didn’t get anywhere useful.

The bluish-gray zone on the stipe is interesting, as well as the densely-fibrillose cap.

Seems really robust and bulky too, which eliminates some general guesses.

long day, waaaaaaaay too many mushrooms…
By: Debbie Viess (amanitarita)
2011-10-17 07:49:00 PDT (-0700)

I agree, this is not S. odorata, even if the odor and vaguely similar characters match. Now having the time to look up more photos of Squamanita, this ain’t it.
Too smooth, for one thing.

So, what species in CA at elevation has a fat rooting stipe and smells like grape juice???

By: Christian (Christian Schwarz)
2011-10-17 07:27:50 PDT (-0700)

Here’s SVIMS’ description:

CAP 1-4.5 cm across, obtusely bell-shaped to convex expanding but usually retaining broad umbo, sometimes with depressed center; brownish purple to purplish gray or lilac-gray often darkening with age; densely scaly or fibrillose-scaly, the scales rather coarse, pointed, and recurved, less scaly toward margin which may be merely densely fibrillose and torn…”


STEM 1.0-3.5 cm x (0.2)0.3-1.0(1.5) cm, cylindric or widening slightly downward; color similar to cap, satiny-fibrillose in upper part, lower part with 2-4 incomplete rings of more or less erect, floccose-fibrillose, dark violaceous gray-brown scales, similar to those on cap, stem arising from gall-like, usually marginate, ochraceous bulb, often fused with other bulbs or with several bulbs seated on a common basal one, each bulb 1-3.0 cm x 0.6-2.5 cm, nearly spherical to ellipsoid, rather soft, outside of bulb may be felted. ODOR like ripe grapes or grape juice, or like the artificial grape flavouring in candy and soft drinks, or like Hebeloma sacchariolens.”


Squamanita appear to be brutally rare, and the above material doesn’t correspond well to this collection, so I think we need more evidence before suggesting that this is such a fungus.

Created: 2011-10-16 21:37:14 PDT (-0700)
Last modified: 2011-12-10 16:42:59 PST (-0800)
Viewed: 138 times, last viewed: 2018-06-16 00:45:14 PDT (-0700)
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