Observation 18598: Tricholoma myomyces (Pers.) J.E. Lange
When: 2008-12-31
No herbarium specimen

Notes: Found under D. fir.

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Eye3 = Observer’s choice
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Thanks, Dimi
By: Irene Andersson (irenea)
2009-02-18 13:00:41 EST (-0500)

Sounds like this is an area where you are ahead of us in Europe.
We used to have a species called myomyces, but it’s now included in Tricholoma terreum, which is said to be a very variable species.
I suspect it is a cluster of species (at least different forms with varying gill colours, odor, discolouring with age, amount of veil) that isn’t really investigated at all.
I think we ought to take a look at Shanks’ work – I wouldn’t be surprised if we have some of her species here too.

T. myomyces var. cystidiotum is based on the Agaricales of CA, Vol 11, Tricholomataceae.
By: Dimitar Bojantchev (dimitar)
2009-02-18 12:23:29 EST (-0500)

Irene, we base the name Tricholoma myomyces on the Agaricales of
California Series Vol. 11 by Chris Shanks. There she states:
“Tricholoma terreum has been the name most commonly applied to
collections of small, gray Tricholomas in California, but to my
knowledge T. terreum does not occur in California”

Also, it has to be noted that she refers to our variety as T. myomyces
var. cystidiotum due to the presence of cheilocystidia. I think I have
a micro-photograph of the cystidia somewhere.

How much of that is still valid is a matter of additional research. I
planned to do some of it at one point, but didn’t have the time. I’m
not aware of anyone else doing any original research since then.

Occasionally we see some small, no-name Tricholomas. Even yesterday
walking with Arora and Christian Schwartz we saw one that matched
nothing that I can recall quickly, but we didn’t even collect as it
was too rainy.

D.
Just curious
By: Irene Andersson (irenea)
2009-02-18 09:38:11 EST (-0500)

I’m interested to know how you use the name myomyces – separate from terreum, or instead of terreum?
IndexFungorum prefers the name myomyces, but MycoBank uses terreum as the current name for these synonyms (if they are synonyms..?).

Created: 2009-02-17 15:03:06 EST (-0500)
Last modified: 2009-02-17 15:03:06 EST (-0500)
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