Observation 59854: Tricholoma (Fr.) Staude

When: 2010-11-25

Collection location: Del Monte Forest, Monterey, California, USA [Click for map]

Who: Byrain

No specimen available

Growing from Pinus radiata duff.

Proposed Names

-20% (3)
Recognized by sight
-61% (2)
Recognized by sight: Based on the white gills.
65% (3)
Eye3 Eyes3
Recognized by sight
16% (2)
Recognized by sight: (=T. leucophyllum)

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Stem texture?
By: Byrain
2010-11-28 22:39:58 CET (+0100)

Still not sure if the stem texture is smooth enough for T. flavovirens or T. intermedium, looks off compared to the pictures I have seen so far, but this is the first Tricholoma sp. I have seen (And known what it was).

Spore size?
By: Darvin DeShazer (darv)
2010-11-28 20:11:35 CET (+0100)

The only problem with calling it T. intermedium is the spore size. They fit T. flavovirens.
T. intermedium – 4.8-6.2 × 2.9-4.3 µm (holotype)
T. intermedium – 5.3-9.6 × 3.4-5.8 µm (West Coast)
T. flavovirens – 4.8-8.6 × 3.4-5.8 µm (West Coast)
Data from Kris Shanks, 1997, The Agaricales of California: Tricholoma.

By: Noah Siegel (Noah)
2010-11-28 19:03:09 CET (+0100)

This is a typical eastern T. intermedium
Not sure if this is the same or something different.

I do agree with Darv that the CA flavovirens have paler gills then eastern ones…

whitish gills
By: Darvin DeShazer (darv)
2010-11-28 18:30:00 CET (+0100)

This is common in California. Often we find them in the same patch, both deep yellow gill and whitish gills. Look at the listings for Tricholoma flavovirens here on MO from California.
The gills are never pure white, but have a yellowish cast to them.

Interesting indeed
By: Irene Andersson (irenea)
2010-11-28 16:25:59 CET (+0100)

I have looked through more Tricholoma obses at MO, but haven’t found any other looking like this.

If someone had analyzed DNA from the european T. joachimii, it would have been possible to see if it matches american collections with other names – but no, I can’t find anything in Genbank or elsewhere..

Intriguing mushroom
By: Byrain
2010-11-28 11:22:12 CET (+0100)

Attempting to key it out in mushrooms demystified resulted only in dead ends, wish that hunt wasn’t so rushed (My hunting partner was in a hurry to find the porcinis) so I could of collected more info…I plan to go back in December, I’ll be better prepared then to collect samples.

I only know
By: Irene Andersson (irenea)
2010-11-28 10:52:30 CET (+0100)

that Tricholoma joachimii is very rare in Europe. I can imagine that you have it in North America as well, possibly described with another name. That’s why I kept my voting low..

In America, you are using a lot of other european names on Tricholoma species in similar habitats, so I see no reason to beleive that joachimii isn’t there too – perhaps even a North American species from the beginning?

Could be
By: Byrain
2010-11-28 10:39:28 CET (+0100)

Tricholoma joachimii looks good to me, but the only descriptions I can find are in google translated Spanish which is lacking. And am I to understand that T. joachimii is known only from Europe?

If you want a european name
By: Irene Andersson (irenea)
2010-11-28 10:15:00 CET (+0100)

Tricholoma joachimii may be the closest, with olivaceous yellow scales on the stem and cracking cap surface.

It’s not flavovirens/equestre (yellow gills and stem), and not sejunctum/arvernense (smooth stem and different cap structure).

Gill color.
By: Byrain
2010-11-28 08:15:31 CET (+0100)

T. flavovirens should have yellow gills as I understand it, could it be T. sejunctum?

Created: 2010-11-28 07:43:47 CET (+0100)
Last modified: 2011-12-24 14:16:45 CET (+0100)
Viewed: 146 times, last viewed: 2017-06-08 12:55:55 CEST (+0200)
Show Log