When: 2010-06-05

Collection location: Yosemite National Park, California, USA [Click for map]

Who: Debbie Viess (amanitarita)

Specimen available


enlarge to note similar texture of the hymenium, compared to above photo.

Proposed Names

35% (5)
Recognized by sight: young, slightly soft, pitted fruit body.
found by David Rust.
-29% (1)
Recognized by sight: in search of a genus…;)

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

= Observer’s choice
= Current consensus


Add Comment
By: Chaelthomas (Chaelthomas)
2017-03-02 00:32:36 CST (-0500)

Id say its pinicola but this is a button so it would be hard to know. Come back in a few months.

maybe I could…
By: Debbie Viess (amanitarita)
2010-06-16 11:59:20 CDT (-0400)

if I had YOUR macro lens! yes, there are some pathetic patches of pores on this critter tucked up in the gap on the left bottom side of the fruit body.

Jessie Glaeser has offered to take a look at it (a piece of it, at any rate) in hand, as well as possibly run the DNA if microscopy doesn’t provide an answer. Should be quicker than getting in line for the DNA analysis at UCB! ;)

When I saw it
By: Noah Siegel (Noah)
2010-06-15 21:03:16 CDT (-0400)

I said Fomitopsis pinicola as well. I thought maybe it froze when it had “sweat” droplets on it…

Pores were formed on the left underside, maybe Debbie can take a picture and post it.

I thought so too, Tom.
By: Debbie Viess (amanitarita)
2010-06-15 13:28:24 CDT (-0400)

But this one is definitely stumping the stars!

I also sent these photos to your WI polypore compatriot Dr. Jessie Glaeser, and one of the names that was proposed was an old, spineless Hericum. Too woody for that, tho, IMO.

Anything definitive to Fomitopsis pinicola that could be seen in microscopy? Or should I just let it go and wait for the DNA?

I suspect is is a mutant Fomitopsis pinicola
By: Tom Volk (TomVolk)
2010-06-15 13:01:52 CDT (-0400)

Sometimes mutation occur or conditions are such that the pores form wherever they want without regard to gravity. And Fomitopsis pinicola is so enormously variable anyway. That’s my best guess anyway.

not bitter…
By: Debbie Viess (amanitarita)
2010-06-09 16:42:32 CDT (-0400)

back to the drawing board.

Just an idea
By: Irene Andersson (irenea)
2010-06-09 12:25:48 CDT (-0400)

that if this conk has the same corky and tough texture as Fomitopsis pinicola (which it definitely isn’t), it could be Laricifomes. I don’t actually beleive it though, I’m sure Darv would have recognized it if it was..
Why not try to find spores to start with? Maybe it’s too immature.

what qualities would make it so, Irene?
By: Debbie Viess (amanitarita)
2010-06-09 12:09:29 CDT (-0400)

I do have the fruit body here…and a sharp razor blade!

I agree, Darv, that it is the same thing found by Allen…but what it IS is still a question mark, IMO.

By: Darvin DeShazer (darv)
2010-06-09 10:31:39 CDT (-0400)

This observation might be the same species.

indeed, this was a strangely textured fruit body…
By: Debbie Viess (amanitarita)
2010-06-09 01:04:07 CDT (-0400)

but a solid, heavy “conk” nontheless. it has a similar tho more exaggerated texture to this more obvious Fomitopsis that I just posted in addition.

It’s not a Pycnoporellus, tho, which has a pretty airy, chambered fruit body. colorful, too, unlike this white fungus.