Observation 102984: Agaricaceae Chevall.
When: 2012-07-02
No herbarium specimen

Notes: Again, a specimen I attempted to identify in a foreign place using an American field guide. Found in the grassy fringes of the musuem area of the area, and only about 5 were found. A bunch of LBMs and recently-fruiting young agarics were also in the area.


Top view of cap. Note small and brown apex on a whitish cap.
Gills and stalk.
Close-up of the fairly close gills; free.
Nearby mushroom with an uplifted cap.
Trio of this species.

Proposed Names

-12% (4)
Used references: Mushrooms Demystified.
47% (2)
Recognized by sight
57% (1)
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks Alan.
By: Dave W (Dave W)
2012-07-27 05:46:37 EEST (+0300)

With all the splitting off of former lepiotas that’s occurred during the past 10 to 20 years, I’m not always sure how to distinguish a mushroom currently placed within the genus Lepiota from one in Leucoagaricus. But this obs certainly looks like something that – once upon a time – I would have called “Lepiota.”

Not a definite ID.
By: Ivan Rodriguez (Ivan Rodriguez)
2012-07-27 05:14:45 EEST (+0300)

I’m sure there are also many other things to consider for this to be M. oreades. At the time, though, that was the best I could come up with in the tour bus. And yes, there are some nasty members in the Lepiota group that could be confused for M. oreades. Don’t worry though, I wouldn’t trust my small body of knowledge on mushrooms to enjoy them as food… yet.

Stipe also looks too thick and bumpy…
By: Dave W (Dave W)
2012-07-27 05:06:01 EEST (+0300)

for M. oreades. The ones with the gills showing in the photos do not appear to be very young, and the broad gills are crowded.

My main concern here is that the choice edible M. oreades has been confused with a mushroom from the group formerly known as Lepiota… a group that includes a few dangerously poisonous species.

Young specimens?
By: Ivan Rodriguez (Ivan Rodriguez)
2012-07-27 04:45:32 EEST (+0300)

That’s an issue I did face, the gill spacing. The only explanation I have for that is that they are crowded when young and, as the cap expands in age, the gills become more distant. If you take a close look at the picture of the one with an uplifted cap — which I believe denotes a mature mushroom — the gills are indeed as apart as Marasmius oreades. That was one of my mistakes though, I forgot to take a picture of its underside!

I agree with the geographic consideration, Ivan.
By: Dave W (Dave W)
2012-07-27 04:37:05 EEST (+0300)

That’s why I included a comment about my location. But I looked at Arora’s photos (cited as your reference), and the gills appear to be considerably more widely spaced for M. oreades.

Initially what I thought too.
By: Ivan Rodriguez (Ivan Rodriguez)
2012-07-27 03:51:51 EEST (+0300)

That was the second genus that I would feel it belongs to, due to the size and shape of the cap as well with the association with grass. But there apparently seems to be a decent degree of variation, and if that’s so, we’re talking about trying to compare a mushroom found in northeast United States to one found in southeast Mexico. I imagine that it could appear remarkably different with such distances! But I could be mistaken.

This does not look like the M. oreades I collect…
By: Dave W (Dave W)
2012-07-27 03:46:22 EEST (+0300)

here in PA,USA. The gills are too tightly arranged on this obs.

To me, this looks like something related to Lepiota.

Created: 2012-07-27 03:23:25 EEST (+0300)
Last modified: 2013-06-29 22:34:48 EEST (+0300)
Viewed: 91 times, last viewed: 2017-06-13 17:26:23 EEST (+0300)
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