Observation 170615: Tylopilus P. Karst.

When: 2014-07-16

Collection location: Sweet Valley, Pennsylvania, USA [Click for map]

Who: Phil Yeager (gunchky)

No specimen available

Brownish- maroon caps 14mm-62mm wide x 8-28mm high with decurved margin. Pores white bruising brownish. Context white with pinkish tints. Odor pleasant, taste a bit tart. Stipe 65-120mm long x 7-20mm at apex, enlarging towards base, brownish, solid and becoming hollow; possibly due to larvae. Base whitish with white to tan rhizoids. Stipe with longitudinal lines and small ridges. Pilepellis: KOH-red, NH4OH-orangish. FeSO4-neg. Pileal context: KOH- light yellow, NH4OH- neg. FeSO4light greenish-grey. Stipitipellis: KOH-orangish, NH4OH- neg. FeSO4-neg. Stipe context: KOH- neg, NH4OH- neg, FeSO4- neg. Found in mixed woods alongside of a rotting deciduous log.



Proposed Names

1% (3)
Used references: Bess. Bess. Roody
53% (3)
Eye3 Eyes3
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I’m not voting on this obs yet…
By: Dave W (Dave W)
2014-07-21 16:45:04 PDT (-0700)

because of the following. The weather here for the past week+ has been very dry. Under these conditions, mushrooms that fruit during the very last rain-chance often do not mature normally. Although the ones seen here look a bit robust for A. gracilis, and lack the streakiness on the stipes that I associate with this species cluster, this may be due to the weather.

This is why I began the discussion by asking if any of these were left in-situ to mature. Not that I make a general practice of this. Aside from the ones I observe on my own property, I do not usually leave a few to mature… or if I do, I often fail to re-visit the site. Just wondering. And, even if there were a few left to mature, with this dry weather during the past 5 days, it may not matter.

Sounds like
By: Phil Yeager (gunchky)
2014-07-21 15:20:00 PDT (-0700)

you are confident in your obs. In which case I shall re-read the section on Tylopilus to see what I may have missed. Thank you all. Phil

This is
By: Eva Skific (Evica)
2014-07-21 13:19:33 PDT (-0700)


This is not
By: Phil Yeager (gunchky)
2014-07-21 12:28:37 PDT (-0700)

T. ferrugineus due to the chemical reactions observed. For instance NH4oh was orangish on the pileipellis and produded no flash changing reddish brown or blacklish brown KOH produced red not any shade of brown. etc. I don’t know who cast the negative vote, but I would like to know the reason for doing so. If my choice of species is wrong, so be it. I consider using this site as a learning experience, and all constructive criticism is welcome.

Phil, did you leave any of these to mature?
By: Dave W (Dave W)
2014-07-21 09:40:11 PDT (-0700)

Mature versions of A. gracilis are much easier to ID than immature ones.

Based upon the chemical reactions you obtained A. gracils fits, and the following suggestion does not fit so well… Tylopilus ferrugineus. But the photos and the dark brown bruising on the pores remind me of T. ferrugineus.

Created: 2014-07-19 17:53:19 PDT (-0700)
Last modified: 2016-02-04 12:56:37 PST (-0800)
Viewed: 92 times, last viewed: 2017-06-18 09:27:45 PDT (-0700)
Show Log