When: 2017-08-22

Collection location: North Park, Allegheny Co., Pennsylvania, USA [Click for map]

Who: Scott Pavelle (Scott Pavelle)

No specimen available

Found under oaks. I’ve got this narrowed down to Lanmaoa, either pseudosensibilis or carminipes. How the heck do you tell the difference? Carminipes has never been reported in Pennsylvania but I suspect that may be because it’s always confused with something else.

Growing under oak, etc.


Old scratch on the left, fresh on the right.

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= Observer’s choice
= Current consensus


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Hopefully Bill or Robert will get the hint [poke, poke] and contribute to the discussion
By: Scott Pavelle (Scott Pavelle)
2017-08-23 13:49:11 MDT (-0600)

The issue seems clear: it’s a situation where there are two descriptions that have significant amounts of overlap. The question is whether there are any “tells” one way or the other that confirm ID #1 over ID #2, and if not, what features should be emphasized in leaning toward one versus the other.

Oh, and for the record? The idea that a red-and-yellow, thin-pored bolete might have the nerve to vary it’s features from one area to the next is just OUTRAGEOUS. Outrageous I say!!!!! Someone needs to take the darned thing back into the classroom and remind it how to read the d@mned books.

I don’t think
By: I. G. Safonov (IGSafonov)
2017-08-22 20:49:48 MDT (-0600)

you tried to key out your bolete in BENA, otherwise you would have noticed something about it that is not in line with carminipes.
The cap of pseudosensibilis is most frequently brown, which contrasts its pink & pale yellow or red & pale yellow stipe, and less frequently reddish-brown, and the cuticle never bruises blue. The stipe bruises baby-blue, but not a dark shade of blue. Staining of the flesh is variable, both in terms of intensity and coverage.
Carminiporus is the other way around – caps are of some shade of red and all the surfaces, including the cap cuticle, bruising heavily dark blue. In pseudosensibilis the pores smoothly transition into the stipe, just like in bicolor, which I think is not the case with carminipes. Finally, the bluing in pseudosensibilis changes (sometimes very quickly, sometimes slowly) to the deep reddish-brown stain both in the pores and flesh, which I think could be unique to this species. I don’t know if carminipes does that.
Frankly, my experience with carminipes is very superficial. I’ve seen this species only once, 258950. Ironically, it didn’t have any carmine tones in its stipe. However, it did look very different from pseudosensibilis to my eye then. Apparently, carminipes is not a common species at all — there are very few posts on MO and most if not all reliably identified collections come from CT via Bill and Robert: http://mushroomobserver.org/observer/index_observation?q=8iTD. There used to be another post from CT by Noah Siegel, but it’s no longer there.
Finally, take a look at my obs 280056 that might be closer to carminipes if it weren’t for the curry odor and wrong KOH reaction on cap.

I realized that the keys and descriptions overlap almost completely.
By: Scott Pavelle (Scott Pavelle)
2017-08-22 20:01:03 MDT (-0600)

But at the same time, guys like Bill and Walt and you are always so certain about one or the other. It follows that I am missing something. Hence the question.

Well, Scott…
By: I. G. Safonov (IGSafonov)
2017-08-22 18:51:58 MDT (-0600)

It is indeed an opinion, and being such it doesn’t need to be explained or elaborated on, unlike proposals, theories and hypotheses. :-)
You probably got to the two choices via the BF – right? :-) If I gave you an explanation, you wouldn’t learn anything. Instead, try to key out your bolete in BENA. Those keys do work, you know. :-) We can talk off line later if you like.

Okay Igor, you’ve got an opinion. Please explain.
By: Scott Pavelle (Scott Pavelle)
2017-08-22 18:28:04 MDT (-0600)

What separates these two species? I’ve never met carminipes in person to the best of my knowledge, but on paper they are all but identical.

Created: 2017-08-22 16:17:13 MDT (-0600)
Last modified: 2018-09-06 16:01:51 MDT (-0600)
Viewed: 95 times, last viewed: 2019-07-04 10:00:46 MDT (-0600)
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