Observation 109435: Gymnopilus P. Karst.

When: 2012-09-11

Collection location: Paynetown SRA, Lake Monroe, Indiana, USA [Click for map]

Who: Stephen Russell (Mycota)

Specimen available

[5,1,1] 6.4-7.4 × 4-4.6

Proposed Names

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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The staining…
By: Rocky Houghtby
2012-12-20 00:41:08 CST (-0500)

I can’t help but wonder if its a red herring. Sorry, bad pun. There are several species described as staining orange, but a majority of those have a persistent annulus or a decorated pileus.

I believe this is a Great Lakes region species missed by or poorly described by Hesler, Smith and company. That, or the staining is less relevant than I am assuming it is.

As Rich mentioned, The pileus trama would go a long way toward confirming or repealing the proposed ID.

Thanks for following up on my comment!

check the pileus trama…
By: Richard Kneal (bloodworm)
2012-12-20 00:23:57 CST (-0500)

to see if it is interwoven or radial.

I do not have
By: Stephen Russell (Mycota)
2012-12-20 00:20:52 CST (-0500)

Heslers monograph. What are the key points of delineation between the species you are comparing?

And I see that you mention red staining is absent from any of Heslers species. That does not leave many good places to start…

I’m comparing
By: Rocky Houghtby
2012-12-20 00:02:26 CST (-0500)

Your obs to these-


Both of the above seemed like a close match to liquiritiae initally, But microscopy demonstrated that they are not. The vinaceous staining in this and several other obs is not mentioned by Hesler in any of the species described in mycologia 3.

It would be very interesting to see some microscopy done on your dried specimens!

By: Stephen Russell (Mycota)
2012-12-19 23:47:10 CST (-0500)

And sorry for the atrocious color in that picture. A color corrected version is posted.

I thought that I had
By: Stephen Russell (Mycota)
2012-12-19 23:45:02 CST (-0500)

replied to your post soon after. Either it got deleted or I did not post it. Regardless, from what I remember…

I saw very little very few scales or hairs. Slightly tomentulose on a few edges of the cap towards the margin, but nothing around the disc. Was unable to see anything radial.

Dried specimens show some vinaceous staining on gills and stem. Quite a bit on the cap on one of them..

The pileus
By: Rocky Houghtby
2012-09-12 00:07:46 CDT (-0400)

Superficially appears glabrous in your photos, but they are coated in spore mass. Im curious if they are minutely scaled/tomentulose-tufted and if the scales are denser at the disc. Additionally Im curious if the pileus develops vinaceous stains when damaged or upon drying.

I have observed a Gymnopilus fitting these criteria several times and have been unable to get it to species.

The pileus trama of G. liquiritiae will be radial. Thanks for humoring my inquiries!

We have had a dry summer,
By: Stephen Russell (Mycota)
2012-09-11 23:44:13 CDT (-0400)

but things are starting to pick up. Staining on stem is vinaceous. Things are still drying so I will update later. What do you want to know more specifically about the pileus?

By: Rocky Houghtby
2012-09-11 23:06:15 CDT (-0400)

Do you have a hand lens?
Could you describe the pileus structure?
Would you describe the staining on the stem as vinaceous? Are the gills staining the same color as they dry?

You find a lot of really cool Agarics!

Created: 2012-09-11 21:42:15 CDT (-0400)
Last modified: 2012-12-30 17:45:35 CST (-0500)
Viewed: 107 times, last viewed: 2018-03-08 17:10:11 CST (-0500)
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