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Observation 11960: Agaricales sensu lato

When: 2008-10-04

Collection location: Larch Mountain, Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

Mushroom buttons are small, about 2 inches long for the largest; perhaps 1cm high for the smaller button arising from the same base. Reminds me of a Russula, but extremely glutinous, only partly explained by the rain that was falling. Cap a little over an inch across, yellowish-creme; stipe pure white; cap extremely glutinous and slippery; gills white. Found near the top of Larch Mountain, along a pathway, just emerging. Notice the clear droplets under the gills, where no rain could have gotten. Is it an exudate?


Proposed Names

12% (3)
Recognized by sight
-25% (5)
Used references: Aurora’s Mushrooms Demystified p. 291
30% (2)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
By: R. E. Tulloss (ret)
2008-10-30 06:09:27 PDT (-0700)

…I don’t have an opinion. I just don’t know enough about the specimen. I agree that it would be one of the pallid species such as illinita if it is a Limacella.

Really strapped for time.


pure hypothesis and power of suggestion on my part…
By: Debbie Viess (amanitarita)
2008-10-29 14:00:50 PDT (-0700)

…if Limacella, then illinata, not a red capped form. however, unlike you Rod, I have never seen this genus in the flesh. if you don’t think that’s what it is, I withdraw my suggestion…

By: R. E. Tulloss (ret)
2008-10-29 08:14:03 PDT (-0700)

In examining several species of Limacella during the winter of 2007-2008 and, during the same period reading more about the genus, I did not find evidence for a veil deliquescing.

It seems that the universal veil of Limacella has two components.

One component comprises (often upright) hyphae, and the other component is slime that is apparently exuded from these hyphae or from the pileus context. I did not find evidence of a pileipellis in any of the material I examined. The hyphae seem to help hold the “slime pile” in place on the cap. The hyphae (and the slime) may also occur (a little or a lot) on the stipe. In this way, the non-slime part of the Limacella volva is very, very reminiscent of the volva of taxa in Amanita subsect. Vittadiniae, for which we now have both morphological and molecular evidence suggesting that many are basal to the genus and not obligately mycorrhizal (i.e., in some ways they are quite Limacella-like). The similarity between the above-cited volvas involves both microscopic structure and macroscopic distribution.

On the other hand, exactly what is the argument we have for this particular observation being determined as a Limacella?

Very best,


Should have been Limacella
By: Daniel B. Wheeler (Tuberale)
2008-10-28 13:26:47 PDT (-0700)


By: Daniel B. Wheeler (Tuberale)
2008-10-28 13:25:38 PDT (-0700)

I agree that L. illinita matches the cap color better than L. glioderma. I skipped L. illinita because the stipe had not indication of slime. Then I saw Aurora’s color photo of L. illinita and saw the glutinous membrane, which my specimens does not have have. If all Limacinas have a glutinous veil, this may not be a Limacina. I can see no veil-like ring under the cap or anywhere on the stem. So maybe it’s best to keep it in the Agaricaceae.

limacella glioderma has a reddish cap.
By: Debbie Viess (amanitarita)
2008-10-27 17:00:45 PDT (-0700)

try google images to confirm for yourself.

possibly a limacella…
By: Debbie Viess (amanitarita)
2008-10-05 09:07:02 PDT (-0700)

…viscid, glutinous univeral veil(could be on gills, too), no saccate volva, should have free gills. Used PNW key council:

By: Paul Derbyshire (Twizzler)
2008-10-05 05:47:14 PDT (-0700)

Limacella has veils that deliquesce into slime as the mushroom matures. But I wouldn’t bet the farm on these being Limacellas at this point.