Observation 179780: Cystoagaricus hirtosquamulosus (Peck) Örstadius & E. Larss.

When: 2014-09-21

Collection location: Jasper Co., Missouri, USA [Click for map]

Who: Jon Shaffer (watchcat)

Specimen available

Growing on the bark of a dead Sycamore or some kind of large creek bottom species.

Species Lists


This is the bark pattern of the tree it was found on. Sycamore?

Proposed Names

-42% (3)
Recognized by sight
17% (5)
Recognized by sight
-38% (4)
Recognized by sight
4% (6)
Recognized by sight
-54% (6)
Recognized by sight
8% (8)
Recognized by sight: cf. Subgenus Psathyroides.
20% (6)
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Hi Dave,
By: Jon Shaffer (watchcat)
2015-12-09 03:09:34 CET (+0100)

I think it is just that the glass adds more light. Jon

Jon, I see two photos showing spore prints.
By: Dave W (Dave W)
2015-12-06 03:11:51 CET (+0100)

First photo from the top appears to show a very dark brown (tending toward black) print. Second photo shows what looks like a cinnamon-brown print. Do you recall these print colors being different? Or is this just a function of lighting/photo?

By: Jon Shaffer (watchcat)
2015-12-06 01:58:48 CET (+0100)

Anything on those specimens I sent last year? Thank you. Jon

Dead trees
By: Byrain
2014-09-26 17:40:50 CEST (+0200)

Mycorhizal fungi can grow off dead trees if the wood is rotted enough, I have personally found Inocybe growing in mossy places before.

By: Richard Kneal (bloodworm)
2014-09-26 10:23:56 CEST (+0200)

do not grow off of dead trees.

Rocky, it shouldn’t take a paragraph to explain why you are wrong.

Either that
By: Rocky Houghtby
2014-09-25 07:59:11 CEST (+0200)

or it really is an Inocybe growing from mossy bark.

By: Rocky Houghtby
2014-09-25 03:13:11 CEST (+0200)

The spore color doesn’t necessarily rule out Psathyrella, but it doesn’t strengthen the suggestion. All of Smith’s Psathyrella with erect squamules are in the clade with dark purple spores, so I doubt it is going to work out to be in that genus.
The tawny-cinammon spores and morphology point strongly at the group of naucorioid fungi that Smith placed in subgenus Flavidula of Pholiota. This section is more or less defunct with many of the species moved in and out of other genera like Hypholoma and some questionable groups such as Phaeomarasmius and Flammulaster. This is one of my favorite groups of mushrooms because many of the species intergrade with Tubaria and Galerina, both morphologically and microscopically.
The details of the pileipellis and hymenium will go along way toward placing this near a genus, but irrefutably demonstrating an epithet will be tricky as few of Smiths descriptions match this collection and those that do mostly represent European and tropical species.

Cant wait to take a crack at this one, Jon.

By: Byrain
2014-09-23 17:51:00 CEST (+0200)

I’m pretty sure I have that, I’ve been procrastinating on a lot of microscopy work. It will get done eventually…

You are probably right Byrain. BTW, did you ever receive the specimens I sent
By: Jon Shaffer (watchcat)
2014-09-23 17:39:50 CEST (+0200)

awhile back. Never heard back from you. http://mushroomobserver.org/134344?q=2Axu5

By: Byrain
2014-09-23 16:34:38 CEST (+0200)

Do you have an image or even a description of Psathyrella psathyroides? Rocky said subgenus Psathyroides, not P. psathyroides. It seems to be an European species Smith didn’t include in his North American book.

I’ll try that Rocky.
By: Jon Shaffer (watchcat)
2014-09-23 03:41:41 CEST (+0200)
If you can
By: Rocky Houghtby
2014-09-23 02:58:55 CEST (+0200)

get a spore print on foil, it would be awesome for measuring.

I’ll split the collection and also go back and see if there are more. Jon
By: Jon Shaffer (watchcat)
2014-09-23 00:56:13 CEST (+0200)
By: Rocky Houghtby
2014-09-22 23:38:45 CEST (+0200)

Gladly look at these, Jon.

Sure thing
By: Christian (Christian Schwarz)
2014-09-22 23:37:56 CEST (+0200)

I’d be happy to have a few dried fruitbodies.

I do have some and I can go back. Do you want them Christian? I send some stuff to Dr. T
By: Jon Shaffer (watchcat)
2014-09-22 23:26:30 CEST (+0200)

and this year I am sending some to Rocky in Chicago. Jon

Getting an herbarium specimen
By: Christian (Christian Schwarz)
2014-09-22 22:56:54 CEST (+0200)

for these things would be real good!

Created: 2014-09-22 05:57:47 CEST (+0200)
Last modified: 2017-06-14 03:10:40 CEST (+0200)
Viewed: 427 times, last viewed: 2017-08-27 19:02:29 CEST (+0200)
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