Observation 8453: Agaricales sensu lato

Eccentricity of waviness in cap margin was much less in younger specimens. Found growing in soil on rain forest floor.

Dried specimen available with permission from the Herbario Nacional de Bolivia

Species Lists


Copyright © 2008 Steve Kirchbaum
Copyright © 2008 Steve Kirchbaum

Proposed Names

18% (6)
Recognized by sight: just a guess
43% (6)
Recognized by sight: I’m with Doug on this one: delicate stature, gill attachment, coloration look more like laccaria than lepista, but really, it could be anything!
77% (2)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
seen again
By: Danny Newman (myxomop)
2017-02-16 16:22:11 CST (-0500)

or something diabolically similar: Observation 268269. we took a look at the spores on a pretty strange and crummy microscope (objectives with wonky magnifications like 23x and 97x), the only one we had. the image was, unsurprisingly, not so clear. the notes on that new observation say the spores “appear to be slightly ornamented [and] generally ellipsoid.” awaiting confirmation that 268269’s spore print was definitely white.

i don’t think that narrows it down much, unfortunately, particularly since not all Laccaria species’ spores are aggressively ornamented/spiny, and some not at all. twill remain a mystery for at least another two years…

come again?
By: Danny Newman (myxomop)
2010-11-18 00:27:52 CST (-0500)

if you mean to ask if there have been any alterations to the image, there have not. this was shot in jpeg and came straight off Steve’s camera and onto MO and flickr. it was here in limited resolution along with a host of other pictures which have been replaced as of this afternoon.

two images previously included in this observation can now be found at http://mushroomobserver.org/59112 despite being found relatively close together (~10m) since they cannot be confirmed to be the same species.

No oaks here
By: Danny Newman (myxomop)
2010-06-17 16:13:15 CDT (-0400)

I’m nearly 100% certain of that. If there was a mycorrhizal association it was with something else.

By: Christian (Christian Schwarz)
2010-05-30 10:40:02 CDT (-0400)

Look for elongate, finely spiny spores to confirm L. gomezii.
In the original description, Mueller seems to establish a strong relationship between L. gomezii and Quercus. Since Quercus reaches its’ southern limit in Colombia, I doubt that L. gomezii occurs as far south as Bolivia.

mycorhizzal status dubious
By: Danny Newman (myxomop)
2009-01-26 23:41:11 CST (-0500)

Collections must stay in Bolivia as per the Andean Protocol, but all specimens can be found at the Bolivian National Herbarium, and can be obtained with permission within national borders. Duplicates are occasionally allowed out of the country with prior authorization.

Unfortunately, I can´t seem to locate this one in this year´s collections, even though I know we found it again this year, and in almost the exact same spot. It is certainly in last year´s collections. We´ll get some microscope data tomorrow, hopefully, and start to narrow down possible identities.

collect it dry it bring it home!
By: Debbie Viess (amanitarita)
2009-01-17 23:26:27 CST (-0500)
An Amazonian hardwood of an unknown variety.
By: Danny Newman (myxomop)
2008-08-08 04:27:26 CDT (-0400)

Will have to check again next year to be sure.

One choice is mycorrhizal and one is not…
By: R. E. Tulloss (ret)
2008-08-07 21:55:12 CDT (-0400)

What would the symbiont be if you found this was a Laccaria?


More like Laccaria?
By: Douglas Smith (douglas)
2008-07-28 13:11:13 CDT (-0400)

Are these more like a Laccaria than a Lapista?