Observation 200039: Gyroporus castaneus (Bull.) Quél.

When: 2014-09-17

Collection location: Mainville, Pennsylvania, USA [Click for map]

Who: Phil Yeager (gunchky)

No specimen available

Terrestrial near Tsugae. Retrieved them from under a thick stand of Hemlocks and took photos in a grassy area.

Proposed Names

29% (1)
Used references: North American Boletes
-28% (1)
Recognized by sight
Used references: BRB reports this species under hemlock.
70% (4)
Eye3 Eyes3
Recognized by sight: Stipe looks stuffed/hollow

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks Christian
By: Phil Yeager (gunchky)
2015-03-03 01:03:28 CET (+0100)

Nice observation. I have found these before but the colors were not quite this dark. See MO obs. 140929.

Does look like G. castaneus.
By: Dave W (Dave W)
2015-03-02 03:19:34 CET (+0100)

This one is usually easy to ID by the hollow/chambered/stuffed stipe that breaks easily. Young specimens have white pores like are seen here. But like you say, Phil, probably not enough info available to get a lot of confidence here.

Just looked again. The one photo shows the interior of the upper stipe. Looks like a shell-like exterior with white stuffing inside. Probably G. catsaneus. I have collected this type in diverse habitat, including under hemlock. Nice call Christian!

By: Christian (Christian Schwarz)
2015-03-02 03:17:53 CET (+0100)

The broken-up orange-brown ornamentation and distinctive look of the cross-section, plus the white pores becoming yellow look pretty spot-on for Gyroporus castaneus (in the Eastern N Am sense).

Checked all of the species you mentioned
By: Phil Yeager (gunchky)
2015-03-02 03:11:22 CET (+0100)

but not enough data to make a positive ID.

Was this one bitter-tasting?
By: Dave W (Dave W)
2015-03-02 02:58:42 CET (+0100)

Hemlock is where I often find T. felleus. The stipe is always reticulate for this species.

The ones seen here look like the name rubrobrunneus may apply, ie brownish color.

T. badiceps is a mild-tasting brown one that I find in mixed woods. There’s generally brown bruising on the pores with this type. The ones seen here do not show the rich brown color I expect with badiceps. T. ferrugineus is another brown mild-tasting one. I believe I have found both these types in our area.

Created: 2015-03-02 02:47:07 CET (+0100)
Last modified: 2015-03-03 16:10:47 CET (+0100)
Viewed: 85 times, last viewed: 2017-06-20 05:38:55 CEST (+0200)
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