Observation 106603: Tylopilus griseocarneus Wolfe & Halling
When: 2012-08-23
No herbarium specimen

Notes: Dark brown cap sometimes with pale bloom, Pores dark, Stipe dark brown at base tapering upward, brown reticulation on white near apex. Some stems entirely black. White context immediately stains dark brown when sliced; gills turn orange-red, like Strobilomyces then brown.

Proposed Names

-30% (2)
Recognized by sight
28% (1)
Used references: “North American Boletes” by B-R-B
30% (2)
Eye3 Eyes3
Used references: B-R-B p. 264 prominent reticulation; macro-chemical tests would have helped.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Martin,
By: I. G. Safonov (IGSafonov)
2012-08-24 20:09:43 CDT (-0500)

You may be right… I’ve never seen/collected T. nebulosus. I went with nebulosus mostly because of the red-brown staining of the tubes and the reticulation not running down the stipe enough; the reticulation in your specimen is restricted more to the apex. You collected and examined the specimen(s) and probably paid attention to the exact sequence of the color changes of the context as it underwent oxidation over time. If you still have he material, measure the spores; they are of the size different enough to eliminate one or the other. Read both descriptions carefully in B-R-B and go with the name that fits the best…

Thanks I.G.!
By: Martin Livezey (MLivezey)
2012-08-24 19:05:55 CDT (-0500)

Why T. nebulosus and not T. griseocarneus? Your photo of T. griseocarneus looks nearly identical to what I saw. Unfortunately I did not bring the KOH. This was in Prime Hook National Wildlife Refuge near the pond on the south end.

Martin,
By: I. G. Safonov (IGSafonov)
2012-08-24 17:32:36 CDT (-0500)

Congrats — that’s a nice and rare one! I think it belongs in genus Tylopilus… Another infrequently encountered, somber-colored Tylopilus from the coastal plain, the other one being T. griseocarneus.

Created: 2012-08-23 20:38:57 CDT (-0500)
Last modified: 2016-08-11 10:02:59 CDT (-0500)
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