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Observation 145161: Laccaria pumila Fayod

When: 2013-09-09

Collection location: Pembroke, Maine, USA [Click for map]

Who: Terri Clements/Donna Fulton (pinonbistro)

No specimen available

On ground in leaf duff under balsam fir in mixed woods. Cap up to 3 cm., bell- shaped when young, expanding in age, pale orange brown, paler lined margin, thin flesh, hygrophanous. Gills broad, color of cap. Stem color of cap, up to 3.5 cm. × 2 mm., fragile. Mild odor and taste. White spore deposit.


gills closer and not thick as in Laccaria spp.
stem fragile not tough as in Laccaria and Marasmius spp.
bell-shaped when young; margin not incurved as in Laccaria spp.

Proposed Names

-33% (6)
Used references: Arora, p.224
39% (5)
Recognized by sight: L. striatula is listed as a synonym. I see some moss in the photo. I usually find this type in mossy habitat.
42% (3)
Recognized by sight
57% (1)
Recognized by sight: synonym for L. striatula

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

= Observer’s choice
= Current consensus


Add Comment
not Marasmius
By: Chris Hay (hayfield)
2013-09-13 12:54:12 CDT (-0500)

I destroyed Marasmius cohaerens (responses indicated very unlikely and on second thought the fragile stem should rule it out immediately). From what I gather there are at least superficial resemblances to Laccaria altaica (even though certain diagnostic (?) features may not match). It’s a bit big for most Mycena, but it’s a wide genus with some larger species so as far as I know wouldn’t rule it out. We all have different experiences and ideas. Thanks for abiding my novice inputs.

Thanks, Dave
By: Terri Clements/Donna Fulton (pinonbistro)
2013-09-13 09:49:08 CDT (-0500)

for the time you’ve spent on this. At my current level of experience I am still having trouble understanding the characteristics that would make one think these are Laccaria. In particular the fragile stem and thin, broad, close gills of my young FB’s bother me. Oh well, I’m sure I’ll find more one of these days.

Perhaps my concept of L. altaica…
By: Dave W (Dave W)
2013-09-13 07:33:15 CDT (-0500)

is too broad. But when I find what I believe to be this type there are usually lots of them, all fruiting in very similar habitat. On young ones gills tend to be lighter colored and not very broad. Mature ones have the broad reddish-brown gills.
Usually the caps are mainly 1 cm or smaller in diameter. 3 cm, as reported in this obs (145161), does seem large for L. altaica.

I would also go with Laccaria.
By: Gerhard Koller (Gerhard)
2013-09-11 17:18:18 CDT (-0500)

But I wouldn’t say it is altaica. I would just call it Laccaria spec. for now. Someone should take a closer look at it if possible.

I agree
By: Terri Clements/Donna Fulton (pinonbistro)
2013-09-11 16:54:00 CDT (-0500)

that humility is a virtue although I don’t see what that has to do with people having a discussion about identifying mushrooms. I’m studying many references about mushrooms before I post trying to note particlulars that will help with the ID. I put in the time and effort so I can learn from it. Rather than trying to answer my questions it seems like you want to put me down.

I don’t want to argue either.

Humility is virtue ..
By: Eva Skific (Evica)
2013-09-11 16:35:48 CDT (-0500)

All I know about mushrooms I learned listening to the advice of others and studying their proposals.
Sometimes I propose the name as my gratitude (paying forward)
I do not want to argue

This OBS is not Mycena
I can say with certainty that it is Laccaria

So Eva, please
By: Terri Clements/Donna Fulton (pinonbistro)
2013-09-11 14:24:48 CDT (-0500)

tell me the basis on which you have called this Laccaria altaica. I don’t see the thick waxy looking gills of that species nor the incurved margin of the button stage. And the stems are not tough like Laccaria. Please compare to obs 137305 which is probably is Laccaria altaica and note all of the differences which are key to distinguishing between the two according to Arora. Regarding Mycena Arora says they are typically conical or bell-shaped when young, rarely incurved, stipe is fragile all of which led me to think it might be Mycena. I don’t understand what would lead one to think it might be Laccaria. See also obs 19779 for a similar looking Mycena.

Bell-shaped caps…
By: Dave W (Dave W)
2013-09-11 12:27:47 CDT (-0500)

do seem wrong for L. altaica. Gills on Laccaria types often seem to change appearance as a given mushroom matures. But I’m guessing that the texture for the stems on this obs weighs against the Laccaria proposal.

By: Terri Clements/Donna Fulton (pinonbistro)
2013-09-11 08:36:04 CDT (-0500)

Laccaria altaica was one of the first things I considered for this obs due to color and striation. But the gills, stem and shape of cap in youth don’t fit. Look at your photos on the most confident page for L. altaica and compare them to mine. I have found Laccaria and the button stage has an incurved margin which is very distinctive.


Mycena/ Marasmius
By: Chris Hay (hayfield)
2013-09-10 19:12:16 CDT (-0500)

Marasmius cohaerens has the right look and habitat, although I assume its stem would be tough…

For a Mycena, possibly Mycena galericulata?

By: Terri Clements/Donna Fulton (pinonbistro)
2013-09-10 17:32:11 CDT (-0500)

doesn’t seem like a good fit to me. Arora (page 171) says two distinguishing characteristics of Laccaria are the thick purple to pinkish or flesh-colored gills and tough, fibrous stem. The gills here are orange brown and the stem is not tough but fragile. Also he says the cap in Laccaria is not bell-shaped but this specimen is in youth—see photo 4.

By: Eva Skific (Evica)
2013-09-10 13:42:22 CDT (-0500)

like laccaria