Observation 60460: Sarcomyxa serotina (Pers.) P. Karst.

When: 2010-11-22

Collection location: Henry Cowell Redwoods State Park, Santa Cruz Co., California, USA [Click for map]

Who: zack mikalonis (zackm)

No specimen available

Really really large, biggest cap at least 2 feet down into the tree trunk. When i sliced it (sorry no picture) the cross section looked a lot like every oyster i’ve ever sliced, but the color was so strange. sorry about the bad quality, they are cell phone shots because i didn’t have my camera on me.

Proposed Names

-22% (3)
Recognized by sight
Used references: like a hairless panus strigosus?

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: zack mikalonis (zackm)
2010-12-08 10:59:56 PST (-0800)

definitely did not have a strong odor like sewer gas, i do remember smelling it, i just don’t remember any distinctive smell. If it hadn’t been maggoty i probably would have taken some with me to show christian shwartz and ask if it was a weird oyster—-I remember wanting to eat it, so im sure it didnt smell like sewer…

By: Debbie Viess (amanitarita)
2010-12-08 10:52:20 PST (-0800)

these do resemble Phyllotopsis nidulans, a far more likely mushroom than Panellus (even tho I have found Panellus serotinus myself once, on the North Coast of CA).

However. P. nidulans has a quite hairy cap and a strong, foul odor, like sewer gas. Hard to believe that even a lot of rain would completely eliminate both of these distinctive characteristics.

By: zack mikalonis (zackm)
2010-12-08 10:36:25 PST (-0800)

it had been raining the day (and days before) i found it, so it was quite wet. very smooth cap, no hairs (could rain have removed them?) it was a little sticky but not intensely, if i remember correctly. As this find is from a few weeks ago i cannot remember what the smell was like.

Don’t think so…
By: Douglas Smith (douglas)
2010-12-08 10:09:28 PST (-0800)

I don’t think these are P. serotinus, that species is just too rare in California for someone to find some big ones so easily. I’d believe that id more in the eastern US, and Europe.

was the cap smooth and viscid…
By: Debbie Viess (amanitarita)
2010-12-08 10:09:11 PST (-0800)

or dryish (other than getting rain wetted) and hairy?
any noticeable odor?

Created: 2010-12-07 23:37:12 PST (-0800)
Last modified: 2012-11-12 21:49:08 PST (-0800)
Viewed: 95 times, last viewed: 2017-06-30 10:26:38 PDT (-0700)
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