Observation 109720: Macrolepiota Singer

When: 2012-09-15

Collection location: Hawn State Park, Missouri, USA [Click for map]

Who: Patrick Harvey (pg_harvey)

No specimen available

Proposed Names

36% (4)
Recognized by sight
26% (3)
Recognized by sight: Since the European “procera” is different from the NA type(s), I think “group” is appropriate.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Seems there are a few different species names…
By: Dave W (Dave W)
2014-01-18 07:11:36 PST (-0800)

that may apply to NA parasols… prominens, mastoidea, exoiriata, konradii are examples. Has any good case been made that these names actually apply to NA material? Do they represent distinct species as opposed to varieties of some variable species (other than procera in NA)?

I think that sometimes it makes sense to use the “group” designation. One example is “Boletus edulis group.” For if we refer to the any of the various NA King Boletes as mrerely “Boletus”, then this is misleading, as there are numerous other well-defined NA species names, and IMO the name “Boletus” lumps together all of these species. But in the case of the NA Macrolepiotas, there appears to be no need to rule out NA species names that definitely do not apply to an observation such as this one.

Are there ANY species names….
By: Dave W (Dave W)
2014-01-14 20:17:09 PST (-0800)

currently applied to eastern NA Macrolepiotas? It seems to me that most of the NA species once placed in this genus have been moved to other genera… except for the classic parasol type(s) represented in this obs.

The trend is on MO
By: walt sturgeon (Mycowalt)
2014-01-14 12:28:19 PST (-0800)

to back off to Genus, or group or even family for species that can not be determined by a photo or are not known from North America (in the case of a European named species). I am not happy with provisional names (but I have used them at times) and I don’t like calling it what it is not. See all the changes to Bisporella citina. Patrick is correct. There are many European names currently in use. It is a matter of opinion whether to use the European name, or use group,or sensu American authors which is what I like to use at forays.
There is no right answer. It is unfortunate that the upheaval in this time period leaves us nameless for popular edibles like parasols, chanterelles and morels. When the dust settles years from now, there will be names. In a forum like this, many times we will have to settle for a genus or group name. As in the Mycoflora project saying, “without a collection, it is a rumor”… And without a description it is nameless.

No, I’m not suggesting it, Walt Sturgeon is, see his comment on
By: Terri Clements/Donna Fulton (pinonbistro)
2014-01-14 11:45:54 PST (-0800)

obs 147066. I agree with you but I also think we should have one standard on MO for NA specimens of M. procera. Please take a look at the comments on obs 147066. I’ll post another comment there for Walt as I don’t understand why group names are OK sometimes (say for Boletus edulis group or Tubaria furfuracea group) and not for others.


Re: No N. A. name
By: Patrick Harvey (pg_harvey)
2014-01-14 08:42:09 PST (-0800)

So — you suggest that EVERY fungus which does not have a N.A. name be nameless? That would not leave very many — in morels alone, only one has a (curently valid) American name — M. punctipes.

My convention is to use existing names until others have been validly published. Not discriminating taxons which resemble (for example) M. esculenta and M. conica is simply ignorance and/or laziness.

I also use M. procera group when I see something like this, for the simple fact that you can discriminate that from L. americanus by gross morphology, for another example.

No name for NA version,
By: Terri Clements/Donna Fulton (pinonbistro)
2013-12-31 14:25:44 PST (-0800)

see Walt Sturgeon’s comment obs 147066

Yes, we do
By: Patrick Harvey (pg_harvey)
2012-10-02 12:03:12 PDT (-0700)

The stalks on C. molybdites are bare, these have what I call the “snakeskin pattern” — and they are growing in the woods here (needle duff)

We saw a lot of those this year — stalks are also more stout compared to the caps. It’s always good to be careful when talkin 2 days of sickness :P


Patrick, just wondering…
By: Dave W (Dave W)
2012-10-02 09:54:44 PDT (-0700)

if you get the green-spored parasol in MO. One of the photos reminds me somewhat of this type… sparsely distributed large scales on an otherwise white cap.

Created: 2012-09-15 16:26:02 PDT (-0700)
Last modified: 2014-01-18 06:58:16 PST (-0800)
Viewed: 110 times, last viewed: 2017-06-13 23:54:02 PDT (-0700)
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