When: 2017-11-02

Collection location: Hunlock Creek, Pennsylvania, USA [Click for map]

Who: Dave W (Dave W)

No specimen available

Notes:
On soil/leaf-litter.

Spores subcylindrical to sublacrymoid (prominent apiculus).

Images

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Found two more of these this morning…
By: Dave W (Dave W)
2017-11-05 18:53:05 PST (-0800)

in the exact same spot, under fallen leaves obs 297337. Cystidia on gills of one of the newly found fruit bodies (a mature one) matched what I saw on the gills of the immature fruit body in this observation (297012).

Seems very likely the two mushrooms in this observation (297012) are the same species as the ones seen at obs 297337. The only thing I wonder about is maybe these all represent some species of Rhizomarasmius other than pyrrhocephalus.

Maybe two different species.
By: Dave W (Dave W)
2017-11-04 17:22:07 PDT (-0700)

These were found only about an inch apart. The one with the white stipe was completely covered in leaf litter. Both stipes are pubescent/hairy. I got a spore drop out of the larger cap (dark stipe). The smaller cap looked to be too immature to drop spores. I smashed some of this cap material onto a slide and looked for spores. Found only a few spores, basically elliptical, which looked a bit different than the ones dropped by the expanded cap. Larger mushrooms had spores subcylindrical (lengthwise sides nearly parallel) with a large prominent apiculus (the term I had originally used “sublacrymoid” actually does not apply… just checked Largent).

R. pyrrhocephalus did occur to me for the larger one. This is a species I generally find in spring. But, the most interesting thing… The smash mount on the smaller one revealed numerous cystidia arranged along what looked like a gill edge. The shapes were two basic types, capitate (with round heads) or fusiform (tapered with no head), exactly like what is shown for R. pyrrhocephalus at MushroomExpert.

So, I think you’re really on target here, Jacob. Maybe two different species. But the cystidia of the smaller/immature mushroom and the general appearance of the larger one suggest they may each represent R. pyrrhocephalus.

The spot where I found these is about 100 steps away from my back door. If it’s not raining tomorrow morning, I’ll examine the area and see if I can find a few more of these.

Thanks!

Created: 2017-11-04 08:01:03 PDT (-0700)
Last modified: 2017-11-05 18:55:09 PST (-0800)
Viewed: 36 times, last viewed: 2019-09-03 17:54:35 PDT (-0700)
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