Observation 56002: Coprinellus P. Karst.

When: 2010-10-18

Collection location: San Marcos, Jalisco, Mexico [Click for map]

19.473156° -103.553827°

Who: Alan Rockefeller (Alan Rockefeller)

Specimen available

Interesting brown universal veil remnants on the cap surface.


crushed cap/gills
crushed cap/gills
Crushed cap/gill tissue. There is cystidia in these pics but it is hard to say whether it is cheilocystidia or pleurocystidia.
Crushed cap/gill tissue. There is cystidia in these pics but it is hard to say whether it is cheilocystidia or pleurocystidia.
Crushed cap/gill tissue. There is cystidia in these pics but it is hard to say whether it is cheilocystidia or pleurocystidia.
Interesting cells in the cap
spores and a cystidia
spores and a cystidia
an interesting shaped cell, maybe a cystidia
pileipellis 100x, 10 micron divisions
pileipellis 400x, 2.5 micron divisions
pileipellis 400x, 2.5 micron divisions
pileipellis 400x, 2.5 micron divisions
brown setae on the cap surface
brown setae on the cap surface
brown setae on the cap surface
brown setae on the cap surface
brown setae on the cap surface. Just to the left of the center is a different cell, probably a pileocystidia
pileipellis crush mount. A pileocystidia is just above the center.
pileipellis crush mount

Proposed Names

73% (2)
Eye3 Eyes3
Recognized by sight: granular veil remnants

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Alan Rockefeller (Alan Rockefeller)
2010-11-01 19:14:48 CET (+0100)

The spores are smooth. I brought the sample back so let me know if any more microscopy is needed.

By: Erin Page Blanchard (CureCat)
2010-10-31 07:21:20 CET (+0100)

Just in case anyone was tempted, I already went through all of the species pages on Kees’ site, as well as the keys on svims, and a number of descriptions on matchmaker. But I’m still curious…

By: Erin Page Blanchard (CureCat)
2010-10-31 03:52:08 CET (+0100)

The spores look warty, but I’ve been looking and I still can’t find a suitable match.

Section Setulosi
By: Alan Rockefeller (Alan Rockefeller)
2010-10-31 01:09:00 CEST (+0200)

According to the key at http://www.grzyby.pl/... it looks like this belongs in section Setulosi because the pileus is not glabrous and has setae.

Looks like the next thing I need to look at is whether it has 2 spored or 4 spored basidia.

There are not a lot of 2 spored species, so if I assume its 4 spored, with ellipsoid spores, I need to decide if the pileocystidia has a distinctly tapering neck. Looking at image 116983, I do not think this is the case.

It looks like there are spherocysts in the pileipellis (lots of round cells) which brings me down to 18 or 19, but those species do not look like it. I wonder if I am in the right section…

Unfortunately it does not look like the setae are used in the keys after the first 2 steps.

By: Christian (Christian Schwarz)
2010-10-30 00:39:40 CEST (+0200)

New photos, Alan. Definitely shows multiseptate setae – the brown scales are not environmental

cap surface
By: Alan Rockefeller (Alan Rockefeller)
2010-10-28 22:20:00 CEST (+0200)

The cap surface is very unusual and did not seem like an environmental factor. It is the reason I took pictures of this mushroom. The spores look like they are slightly different shape than C. impatiens, these have a larger germ pore and are more truncate towards the end with the germ pore.

I thought this was Parasola when I found it because it was so thin.

I will get some pics of the pileipellis.

At first
By: Erin Page Blanchard (CureCat)
2010-10-28 19:01:04 CEST (+0200)

At first when I saw this observation I too thought of C. impatiens, but yeah, those tufts on the cap ruled it out for me ’cause I never see that with the species. The gills also look different.

I think it belongs…
By: Christian (Christian Schwarz)
2010-10-28 18:37:54 CEST (+0200)

in Coprinopsis , but my point is that it isn’t C. impatiens.
I would need clearer micro-shots of the pileipellis to name the genus with confidence.

Ok, then…
By: Douglas Smith (douglas)
2010-10-28 18:23:59 CEST (+0200)

If that is so, how does that effect things? Are there certain Coprinellus species that display such features, or this a unique feature to be seen in this genus? How unusual is this feature?

Just wondering…

By: Christian (Christian Schwarz)
2010-10-28 18:08:29 CEST (+0200)

The first first shot – I don’t think those are environmental – I am interpreting them as darkly pigmented, aggregated upright elements of the pileipellis.

Which first shot?
By: Douglas Smith (douglas)
2010-10-28 17:33:41 CEST (+0200)

You mean the first-first shot? You are reacting to the black clumps on the cap? Not sure what those are, but could be environmental.

I’m more looking at the second micro-shot, where it says “crushed cap and gills”, there is some cap surface in that shot, and the surface is cellular, with intermixed globose and fusoid-ventricose elements. Just like you should see in C. impatiens.

Along with the rest of the macro features seem to match just fine.

Anyway, that is my thinking…

By: Christian (Christian Schwarz)
2010-10-28 17:19:47 CEST (+0200)

What about the large, obvious tufts of pileocystidia/clumps of setae visible on the cap surface in the first shot? Doesn’t seem macroscopically very similar at all.

Would be nice…
By: Douglas Smith (douglas)
2010-10-28 12:10:11 CEST (+0200)

If you had cleaner shots of the cap surface, there is where a lot of significant features can be found for these little guys. But I think I see some cap surface there, with the pileocystidia in one of the shots.

Compare with:


(Still not sure how you get brown spore shots through your scope, and I get grey ones for Coprinellus…)

Created: 2010-10-20 00:25:13 CEST (+0200)
Last modified: 2010-10-31 08:54:38 CET (+0100)
Viewed: 181 times, last viewed: 2018-11-18 08:26:19 CET (+0100)
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