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Yellow flesh bruising brown
Cap black in KOH
Pore surface and flesh black in KOH
Yellow flesh

Proposed Names

19% (7)
Recognized by sight: spongy when fresh, easy to cut, yellow flesh that darkens to brown, on dead standing ponderosa pine
-59% (6)
Recognized by sight: spongy when fresh, easy to cut, yellow flesh that darkens to brown, on dead standing ponderosa pine
-65% (5)
Recognized by sight: Preferred name
-55% (5)
Recognized by sight
-24% (5)
Recognized by sight
-36% (4)
Recognized by sight
95% (3)
Recognized by sight
Used references: see sequencing notes

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= Observer’s choice
= Current consensus


Add Comment
Phylogenetic tree
By: Alan Rockefeller (Alan Rockefeller)
2019-03-25 03:01:43 CDT (-0400)

I was curious about Phaeolus so I checked this sequence in BLAST, and the results looked complicated. I put them into a phylogenetic tree with locations to make some sense out of them. It turned out to be much more complicated than I expected – I see at least 9 species in the Phaeolus schweinitzii group.

It’s a name from Europe so it’s pretty easy to spot P. schweinitzii sensu stricto. The USA has 5 species with unexpected distributions, and one of them includes a sequence that claims to be from China.


By: Danny Newman (myxomop)
2017-11-26 18:40:51 CST (-0500)

occurring (or at least reported) on Salix, Quercus and Parkinsonia as it occurs in NA. not pine.

Every collection from AZ under that name is on one or more species of Quercus and two on Parkinsonia

all four California records are on Salix

Maybe something like Inonotus patouillardii
By: Terri Clements/Donna Fulton (pinonbistro)
2017-11-26 18:10:48 CST (-0500)

aka Polyporus fuscobadius found by Lloyd in AZ—can find no info on substrate but it appears to have the same coloring and yellow flesh

Ponderosa pine
By: Jared McRae (redeye311)
2017-11-26 17:50:14 CST (-0500)

According to the ID notes.
I’ve been scowering the web for Inonotus/Inocutis species on similar trees. Not much luck.

my only polypore books
By: Danny Newman (myxomop)
2017-11-26 17:49:40 CST (-0500)

are European ones, but the only species looking remotely like this I’m seeing listed as occurring on conifers is Inonotus leporinus.

no substrate info in the observation
By: Danny Newman (myxomop)
2017-11-26 17:41:55 CST (-0500)

but i see it in the proposals. consider adding it to the notes?

four Inocutis species reported from Arizona according to MycoBank.

Inocutis dryophila
Inocutis jamaicensis
Inocutis rheades
Inocutis texana

google images looking semi-hopeful…

By: Martin Livezey (MLivezey)
2017-11-26 17:37:26 CST (-0500)

Here is your ticket to fame!

As I mention in the obs
By: Terri Clements/Donna Fulton (pinonbistro)
2017-11-26 17:28:46 CST (-0500)

On dead standing Pinus ponderosa

By: Danny Newman (myxomop)
2017-11-26 17:23:23 CST (-0500)

maybe something like Inocutis rheades

These will be sequenced in the next batch
By: Terri Clements/Donna Fulton (pinonbistro)
2017-11-26 12:20:55 CST (-0500)

KOH is black on cap, flesh, pores. Unlike H. nidulans flesh is yellow bruising brown when fresh. Perhaps this is something in the old Phellinus genus? I can’t find any references to help me sort it out.

any update?
By: Danny Newman (myxomop)
2017-11-25 14:52:11 CST (-0500)
+1 to KOH spot test
By: Danny Newman (myxomop)
2017-11-21 11:29:38 CST (-0500)

Assigning a genus is premature until then.

By: Jared McRae (redeye311)
2017-08-06 19:45:46 CDT (-0400)

Would solve this quickly.. If not H. nidulans there are some species of Inonotus that can be similar in appearance, Inonotus radiatus can look similar.

I considered H. nidulans
By: Terri Clements/Donna Fulton (pinonbistro)
2017-08-06 19:10:23 CDT (-0400)

but the colors on this obs seemed significant different—more vibrant red cap colors and especially the yellow flesh.

Created: 2017-08-05 21:02:09 CDT (-0400)
Last modified: 2019-03-25 18:51:42 CDT (-0400)
Viewed: 305 times, last viewed: 2019-06-24 20:09:55 CDT (-0400)
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