Trich?

[clamp connection]

Under jack pine, October 1, northern MN.  A friend thought perhaps a matsutake but I see no annulus on any.  The cottony veils (if indeed they are true veils) are scarcely visible when very young and then disappear. White spore print.  Pleasant mushroomy smell but nothing distinctive. 

[GCn15]

Looks like some kind of trich to me as well. Definitely not matsutake though.

[Dave W]

I agree, a Trich, but definitely not any type of Matsutake. I don't recognize the species. T. fulvum is shaped similarly, but has a darker brown cap, a stalk that is not as white as these, and gills that are bit more closely spaced.

[Dave W]

Here's  a species to check, T. transmutans. 

[clamp connection]

On 10/4/2018 at 9:28 PM, Dave W said:

Here's  a species to check, T. transmutans.  

Hard to find much on that one but I think mine lack the dark fibrils. I'm learning that the trichs are a murky genus. I may need to buy the book

[GCn15]

9 hours ago, clamp connection said:

Hard to find much on that one but I think mine lack the dark fibrils. I'm learning that the trichs are a murky genus. I may need to buy the book

The book and a microscope.

[clamp connection]

I have a scope.

[GCn15]

23 hours ago, clamp connection said:

I have a scope.

That will help a lot to get a confirmation. Trichs are a tough one to really nail down visually.

[Dave W]

I think you're correct about these being a Trich. But it may be worthwhile to check out Calocybe carnea (aka. Rugomyces carnea). 

[clamp connection]

I'm not finding a good match for it anywhere, yet. I went back and collected some more mature specimens which have decurrent gills, while earlier stages appear to be mostly adnate.  Argg!  Can I preserve fresh specimens in propylene glycol? I've dried some but I'd like to preserve that fresh look of a couple and figure out what these are eventually.  It may be a long term project because I'm pretty busy with other work. I havent used my high power scope in 15 years.

 

 

 

[Dave W]

I'm not sure if the habitat has been mentioned. What kind of trees? 

[clamp connection]

These were in a dark jack pine forest that hadnt been thinned.

[clamp connection]

There were still quite a few out there today, so they are quite long-lasting. I picked a few and they were frozen, so they freeze well too. 😁

[Dave W]

The last photo looks a lot like Rugomyces carneus (formetly Calocybe carnea). This species occurs in either open grassy areas or in stands of conifers where there's lots of needle litter. 

[clamp connection]

I dont think its Calocybe carnea. Starting to think they arent trich though.  I got the trich field guide on interlibrary loan and these don't match up well to anything illustrated in there. 

[clamp connection]

Showed some to a friend, he thinks they are a Hygrophorus and I think he's probably right. I never did get around to scoping them but will see if this new info leads me any closer to an ID without having to do so...

[Dave W]

Ha!  Looked at the top photo this morning and the first thing that came to my mind was "Hygrophorus"!

The strongly inrolled cap margins seen on the young ones seem like a useful trait. This points toward H. pudorinus, as does the presence of scales/squamules near the apices of the stipes (seen on larger/expanded ones). Mushroom Expert says this species has an unpleasant odor, and Audubon --within the introductory summary-- characterized the odor as "resinous". However, Champignons du Quebec says, " odeur indistincte, legerement fragrante a desagreable", which Google Translate converts into English as, "indistinct smell, slightly fragrant to unpleasant". This suggests the odor provided for the collection under consideration --"pleasant mushroomy smell but nothing distinctive"--  does not rule out H. pudoninus. But, the best supporting evidence for H. pudorinus may come from the Audubon's final comments on this type mushroom, "This common, widely distributed species has several varieties, which are distinguished by color and odor." 

Several sources mention that KOH on the cap and/or stipe of H. pudorinus causes a color change to orange. 

H. roseobrunneus is very similar in appearance, but is reported as an oak associate. 

[clamp connection]

BTW propylene glycol worked great for preserving these in a fresh state...

I have some dried specimens too but don't really see much in the way of scales on the stipes. But I do think they may be H. pudorinus, or something very close.

 

[Dave W]

First photo, large mushroom with gills facing. The upper 10-12% of the stipe is finely coated with small white scales.

[clamp connection]

This is how they look when dried though, picture from mushroomexpert.com.   I see nothing quite like that macroscopically on my dried specimens but I did see some very faint reddish spots so I looked at one under my dissecting scope. I see some tiny reddish-orangeish polyp-like outgrowths on the upper stipe and lower part of the gills.  I cant tell if they are the same thing shown in the picture though, I'd have to see it magnified.