Observation 221512: Coprinopsis lagopus group

When: 2015-10-27

Collection location: Valley Life Sciences Building, UC Berkeley, Berkeley, California, USA [Click for map]

Who: ISeritan

No specimen available


Young fruitbodies covered in white, erect tufts, with a brown disc in the center
Older fruitbodies shed most of the veil but retained some of the tufts in the center, expanded to planar, then the edges curled up and deliquesced
Pileipellis of cylindrical hyphae
Lageniform pleurocystidia

Proposed Names

40% (6)
Used references: Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
73% (2)
Recognized by sight: Looks like Coprinopsis lagopus, but also could be other macroscopically similar species. More microscopy is needed.
Based on microscopic features: Could you measure the spore size, and let us know if the basidia are two or four spored?

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Coprinopsis lagopus group != Coprinopsis sect. Lanatuli
By: Alan Rockefeller (Alan Rockefeller)
2015-11-27 13:34:09 PST (-0800)

The Coprinopsis lagopus group are the species which macroscopically resemble Coprinopsis lagopus and occur in the same habitat. Coprinopsis section Lanatuli includes these, plus several other species which are macroscopically distinct or occur on different substrates.

Examples of mushrooms that are in Coprinopsis section Lanatuli but are not in the Coprinopsis lagopus group include:


Coprinopsis lagopus group = Coprinopsis sect. Lanatuli
By: Byrain
2015-11-27 12:30:55 PST (-0800)
By: Byrain
2015-11-25 11:01:16 PST (-0800)

You’re wrong in every way and this horse has already been beaten to death.

Its become abundantly clear to me that you do not care about mycology, you do not care about identifying fungi and you do not care about educating others on how to identify fungi. All you do seem to care about is your own sense of taxonomic rules, but you are too arrogant and stubborn to realize that you are not even remotely capable of applying them correctly to fungi when you do not even care to understand the organisms involved. Seriously, stop being such a smeghead.

To Byrain: Mushroom Observer should get rid of the voting system!
By: Oluna & Adolf Ceska (aceska@telus.net)
2015-11-25 07:45:17 PST (-0800)

Identification by voting is an absurd flaw perfectly programmed into the Mushroom Observer. Every MO user should stay away from changing MO observation names! This silly procedure is changing Mushroom Observer from useful mycofloristic database into a silly, high-brow Ludo game. You don’t have to be a well recognized, highly experienced mycologist in order to see that the MO “naming” and a real identification are two different things. I am not a mycologist, you are right, but in spite of that, my “expert status” as calculated by MO is bigger than yours! Adolf

By: Byrain
2015-11-25 06:48:36 PST (-0800)

Adolf, maybe you should leave the voting to mycologists.

We should only use Coprinopsis cf. lagopus when its demonstrated that the fungi are microscopically similar to C. lagopus and yet uncertain to be the same species due to DNA or some other detail. There are a lot of other taxa that only superficially resemble C. lagopus in sect. Lantuli that should not be called Coprinopsis cf. lagopus. The current best name for these is Coprinopsis sect. Lanatuli for the simple reason that no one here can tell if them apart without at least microscopy and the main person that was interested in doing that does not come to MO anymore just because he was frustrated of people like you that insist on using uncertain and wrong names even when educated otherwise.

Thanks for educating me!
By: ISeritan
2015-11-24 16:51:27 PST (-0800)

You’re right, it IS helpful to know that Coprinopsis lagopus is a complex of tough species. I have preserved this specimen. Maybe in the future, when I am more experienced, I’ll be able to return to it and give it another go. I appreciate the educational conversation about this species. It’s much more helpful to hear why an identification might be incorrect than to just receive a comment that says “this is incorrect.”

What to tell to less experienced mycologists?
By: Oluna & Adolf Ceska (aceska@telus.net)
2015-11-24 13:34:37 PST (-0800)

Tell them that it is a fatal glitch in Mushroom Observer that everyone can change MO Observation names and tell them that they should not do it.
In this particular case, tell them that "Coprinosis lagopus " is a complex of several small species, many of the “not understood”yet, and in in order to identify them properly, they should collect and preserve them. Documenting MO Observetions with herbarium specimens should be stressed for any MO Observation.
Mushroom Observer Rules Of Naming (MORON) do not allow one to use some indication of doubt in ID that is normal in the herbarium collections practices, eg. cf., “?”, etc. Coprinopsis cf. lagopus would be a better label than Coprinopsis sect. Lanatuli (J. Lange) D.J. Schafer

Calling them all Coprinopsis lagopus
By: Byrain
2015-11-24 13:08:21 PST (-0800)

Results in numerous less experienced mycologists going around telling everyone how they learned that these all can be easily identified as Coprinopis lagopus, no questions asked. That is not true and there is no reason we should use that name when we have no good way of verifying if its right or not just to mislead the next generation of mycologists.

Perfectly correct, but totally useless!
By: Oluna & Adolf Ceska (aceska@telus.net)
2015-11-24 12:50:02 PST (-0800)

Two hot-air balloonists made an emergency landing in a complex of similarly looking buildings. They saw two guys walking by and they asked them, “Where are we?” “You are in a hot-air balloon,” was the answer.
“We are in a scientific complex, “ said one balloonist to the other one. “The answer is perfectly correct, but totally useless.”
The same is true when you call all the “Cortinarius lagopus “ MO Observations “Coprinopsis sect. Lanatuli (J. Lange) D.J. Schafer”.

Created: 2015-11-02 17:30:07 PST (-0800)
Last modified: 2015-11-29 18:07:20 PST (-0800)
Viewed: 167 times, last viewed: 2018-05-24 09:48:32 PDT (-0700)
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