Observation 127952: Trametes membranacea (Fr.) Kreisel

When: 2012-07-11

Collection location: Cortadura, Veracruz, Mexico [Click for map]


Who: Alan Rockefeller (Alan Rockefeller)

No specimen available

On hardwood.



Proposed Names

-39% (3)
Recognized by sight
24% (4)
Recognized by sight
29% (1)
Eye3 Eyes3
Used references: Ricardo Valenzuela

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
That image
By: Danny Newman (myxomop)
2013-02-07 23:57:09 MST (-0700)

shows the pores in side view. If the hymenium were photographed from directly above/below, I think we’d see the very radial elongation that is not present here and is common to everything I’ve seen called Favolus. The pores here are not oriented at all with respect to the stipe and margin. If Favolus gets that disorganized in the makeup of its pore arrangement, it’s news to me. Again, if you can provide photographic or strong written evidence to the contrary, I’d be only too ready to change my tune.

By: Richard Kneal (bloodworm)
2013-02-07 23:04:04 MST (-0700)


i didn’t get a clear shot of the pore surface, but for the most part it can be made out and is almost identical to Alan’s observation.
i will photograph better photos when they fruit again.

By: Danny Newman (myxomop)
2013-02-07 22:45:58 MST (-0700)

Let’s get back to the observation at hand. Though he hasn’t chimed in yet, I suspect that Alan’s doubts on your name proposal are similar to mine. I’ve considered your assertion that pore irregularity is in fact common to Favolus spp. in age, but the images I’m seeing (both here and on G Images), and all of my recollections of Favolus sightings in Central and South America are not jiving with this hymenium. It complicates things that the genus used to include and/or was synonymous with Hexagonia way back when, because descriptions of species listed under Favolus in one publication may well be referring things later circumscribed under Hexagonia. I don’t know of a current, dependable genus description for Favolus, and even if I did, I’d probably have to wait around a while for access. To borrow an especially good word that’s come into conventional usage around the site, the “gestalt” is all off for me. If you are dead certain you’ve seen Favolus do this with it’s pores at any stage, young or old, I would be very interested to see some corroborating images.

“rain on your one-man ID parade…”
By: Richard Kneal (bloodworm)
2013-02-07 22:25:01 MST (-0700)

exactly what i am talking about.

this has nothing to do with Alan.
please leave him out of it.

By: Danny Newman (myxomop)
2013-02-07 22:21:10 MST (-0700)

please take some deep breaths. nothing about my first comment here was meant to be condescending in the slightest. I genuinely believed your ID may have been made without having first looked closely at the hymenium. In my admittedly limited experience with members of this “genus,” I have found, without exception, a particular angularity to the pores that is completely absent here. That’s what gave rise to my negative vote and subsequent alternative proposal, not malice, not ego, just simple observations. Is Alan guilty of showering the same “ambiguous nonsense” rain on your one-man ID parade? His degree of disagreement is identical to mine.

If you have an issue with my personal conduct on MO, I encourage you to take it up with me privately. The academic integrity of the site suffers when things get too personal.

By: Richard Kneal (bloodworm)
2013-02-07 22:06:30 MST (-0700)

you constantly ruin potential id’s with ambiguous nonsense.
it is not my responsibility to educate you.
you consistently cut people down with your arrogant responses and it is disgusting.

By: Danny Newman (myxomop)
2013-02-07 21:41:15 MST (-0700)

prove it. Alan disagrees as strongly as I do.

By: Richard Kneal (bloodworm)
2013-02-07 21:40:06 MST (-0700)

please don’t lecture me.
i have viewed them at full size.
i’ve seen these at all states of maturity.
the pores do not always stay “honeycomb-like.”
as they mature the pore shape differs, collapse and become “irregular.”
this has been noted by Murrill.
before letting your ego ruin a potential id, i suggest you do more research.

By: Danny Newman (myxomop)
2013-02-07 21:16:25 MST (-0700)

Favolus, to the extent that it’s even a “real” genus (Singer sunk it into Polyporus), has angular, radially elongated, honeycomb-like pores. These pores are much more irregular. Try viewing the images at full size.

By: Richard Kneal (bloodworm)
2013-02-07 20:57:48 MST (-0700)

i find these all summer long…



Created: 2013-02-07 04:03:19 MST (-0700)
Last modified: 2013-11-08 14:49:51 MST (-0700)
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