Observation 154925: Tricholoma (Fr.) Staude
When: 2013-10-12
No herbarium specimen

Notes: Mixed forest, predominately deciduous hardwoods

Proposed Names

-16% (2)
Recognized by sight
-43% (2)
Recognized by sight: Dark gills are possibly the result of age/staining.
46% (2)
Recognized by sight
53% (5)
Recognized by sight
30% (2)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Thanks Drew.
By: Dave W (Dave W)
2013-12-11 11:40:53 PST (-0800)

Good info regarding the elimination of “Russula” based upon a few macro traits.

“Tricholoma” does appear as as a reasonable proposal for these apparently old partially decomposing mushrooms. Interesting, however, that someone is so confident about this proposal.

I’m wondering about Dr. Stobbs’s impression of all of this…?

I agree with your observasions Dave…
By: Drew Parker (mycotrope)
2013-12-10 22:21:52 PST (-0800)

I mistook parts of the collapsing gills to be forks. Also your R. densifolia does demonstrate multi-length lamellulae. On the other hand it is too big of a stretch for me to accept that stipe texture and the thin gills on a Russula. Another thing that adds to that maybe more than the thin gills, are the uneven gill edges even where they are not decomposed. Look at how uniform the gills are on your densifolia. That is a classic Russula feature.

I agree about the fibrillose stipe…
By: Dave W (Dave W)
2013-12-10 21:32:20 PST (-0800)

leading away from Russula. And the thin gills don’t seem to fit in with the darkening Russulas.

However, here’s one that shows numerously sized lamellulae.
Also, note that the stipe shows a slightly textured surface.

I don’t see forking of the gills in 154925.

By: Drew Parker (mycotrope)
2013-12-10 20:57:25 PST (-0800)

To me, several characters of this mushroom argue against Russula, such as the fibrillose stipe, the thin gills with numerous sub-gills and forking near the margin. I don’t think it’s Cortinarius either and suspect it has pale spores.

One sub-category of Russula…
By: Dave W (Dave W)
2013-12-10 19:37:26 PST (-0800)

features mushrooms with context/gills that darken when cut/bruised. With some types the cut context turns red before tending toward black. Here’s an example…

Created: 2013-12-10 18:44:48 PST (-0800)
Last modified: 2014-05-13 11:24:47 PDT (-0700)
Viewed: 88 times, last viewed: 2016-10-27 09:31:56 PDT (-0700)
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