Observation 225477: Clitocybe (Fr.) Staude

When: 2015-12-15

Collection location: Sweet Valley, Pennsylvania, USA [Click for map]

Who: Dave W (Dave W)

No specimen available

In moss under Virginia pine.

No latex observed. Awaiting spores.


Proposed Names

-31% (2)
Recognized by sight
42% (3)
Recognized by sight
12% (3)
Recognized by sight
28% (1)
Used references: Bigelow.
29% (1)
Used references: C du Q

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

= Observer’s choice
= Current consensus


Add Comment
I have continued to collect…
By: Dave W (Dave W)
2017-12-08 09:52:48 CST (-0500)

what I believe to be this same species in the exact same location over the last two years. Examination of gill material at 400x (several different collections) has not revealed the presence of cystidia, which appears to favor Clitocybe. But some of the other observation for which Gamundia striatula has been proposed, obs 226030 obs 300321 obs 301200, bear strong resemblance to obs 117868. Spore dimensions/shape fit in with either G. striatula or C. vibecina, two late occurring species with similar appearance.

I need to try to remember to take a spore collection to a lab where a better microscope is available. Spore ornamentation seems to be the decisive trait.

I looked at a piece of gill under the scope.
By: Dave W (Dave W)
2015-12-25 20:33:43 CST (-0500)

Didn’t find anything other than what I believe were basidia.

My approach to microscopy is not anything close to what one may call “textbook”. I generally try to find a few minutes here and there to look at something under the scope. Spores are not too difficult to deal with, except maybe some types of white spores can be difficult to analyze. And the cystidia of white-spored mushrooms are often difficult to find, partly because I don’t follow careful procedures… piece of gill mounted in Congo red and smashed under the slip. I’m not much of a technician.

But this does look like what some folks here in NA have been suggesting may be G. striatula. And, the spore micro fits.

I’m preserving the material from obs 226030.

Tough one
By: Phil Yeager (gunchky)
2015-12-25 20:00:44 CST (-0500)

Possible closure for this would be to do a complete dissection of said species and report all conclusions. Lots of time and technology required!

Thanks Phil.
By: Dave W (Dave W)
2015-12-25 17:17:12 CST (-0500)

And thanks, Davide for clarifying.

Happy holiday to everyone!

Actually, I got a spore measurement on what is probably the in-situ mushroom seen in this observation. I returned to the collection site yesterday and found this single specimen in the same location obs 226030 . It’s probably the same mushroom, but I can’t be absolutely certain. Looks like the same species. This one dropped a bunch of spores within an hour of getting it home. Spore shape/dimensions match G. striatula, but are on the small side for C. obsoleta.

There are several MO observations from NA labeled G. striatula.
The observation posted by Linas Kudzma (noted in previous comment) is really excellent.

Bon jour
By: Phil Yeager (gunchky)
2015-12-25 16:17:02 CST (-0500)

Davide , Dave. Merry Christmas and happy new year to all.
I believe that it is possible for some European species to be found in North / South America depending on the species and their habitat requirements.
Dave, in response to your question I am using North American Species of Clitocybe.Part I. by Howard E. Bigelow. He states that the spores for C. obsoleta are 7-8.5(-11) x (3.5)4-5um. On a previous post I mentioned problems which I am having with my scopes. Hope to be able to measure some spores for this and other recent posts.

By: Davide Puddu (Davide Puddu)
2015-12-25 15:50:47 CST (-0500)

Eyssartier and roux says also the the cap is almost not striated at all(non ou peu striè). also the attachment of the gills looks a little bit different.

No, i was not questioning anything
By: Davide Puddu (Davide Puddu)
2015-12-25 15:48:24 CST (-0500)

I was just answering Phil about Gamundia distribution, it is a pretty difficult to ID Genus so it could have been overviewed.
C.obsoleta could be possible , it grows under coniferous trees . it has a slight smell of anise.for Eyssartier and Roux (not the best book for micro id) spores are 6,5-9×3,5-4 um ,elliptic and smooth, cyanophiles also.

I realize that G. stiatula is a longshot.
By: Dave W (Dave W)
2015-12-24 22:21:43 CST (-0500)

But here’s another NA observation that matches this species obs 117868. It’s not out of the question that a species considered European is also present in NA. And I think a saprobic species like G. striatula, which may not be dependent upon associating with particular trees, is a candidate for intercontinental distribution. Or maybe this is something close to that species. Champignons du Quebec includes G. striatula within its species index. The account does not say whether ore not this is considered to be strictly a Euro species.

Davide, what proposal do you question in your comment?

Perhaps “Garmundia” is a more reasonably modest proposal.

Clitocybe obsoleta looks like a reasonable proposal. Phil, where can I find information on this species? The odor is pleasant, but slight (based upon another collection of this species made 12/24 obs 226030 ).

And you really think it is like that?
By: Davide Puddu (Davide Puddu)
2015-12-24 19:28:00 CST (-0500)

i mean maybe it has been overviewed? it is a pretty difficult genus.
Anyway the smell should help. someone proposed C.obsoleta that it is in the fragrantes ,anised smell.

According to
By: Phil Yeager (gunchky)
2015-12-24 15:44:00 CST (-0500)

Wikipedia, Gamundia contains six species found in Europe and Temperate regions of South America. Seems .like a long shot for this area.

I didn’t measure the spores.
By: Dave W (Dave W)
2015-12-23 22:19:13 CST (-0500)

My newer scope does not yet include a micrometer. But I believe the spores were larger than the 4-6 × 2.5-3.5 reported for C. flavidella.

I like the Gamundia proposal. Thanks Davide. These look like photos I see of G. striatula. Spores for this species are a bit larger than C. flavidella. And although the spores for G. striatula are described as subtly warty, I doubt my scope (at 400x) would capture this. Look at this observation obs 117868. Linas’s crystal-clear micro photo at 1000x shows this elusive trait very well. When I say the spores were not warty, I mean in the sense of Lactarius, which I initially thought these may be.

What size
By: Phil Yeager (gunchky)
2015-12-23 16:46:47 CST (-0500)

were the spores?

Spores ellipsoid, without warts.
By: Dave W (Dave W)
2015-12-15 23:49:56 CST (-0500)

Print pure white, but spores larger than what I see reported for C. flavidella, which is otherwise similar.

Thanks Pulk and Alan. If I had continued to suspect Lactarius, I probably would have wasted a drop of Meltzer’s hoping to see warts on the spores.

Clitocybe makes sense here.
By: Dave W (Dave W)
2015-12-15 20:21:32 CST (-0500)

Hopefully, I’ll have some spores to look at tomorrow. Any other suggestion for study?

Created: 2015-12-15 19:45:45 CST (-0500)
Last modified: 2017-12-08 09:26:22 CST (-0500)
Viewed: 184 times, last viewed: 2020-08-31 15:41:18 CDT (-0400)
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