Observation 149815: Suillus tomentosus (Kauffman) Singer

When: 2013-10-23

Collection location: North Bend, Coos Co., Oregon, USA [Click for map]

Who: Laurel (algoressister)

No specimen available


I have been making two straight lines with my fingernail on the stipe of most mushrooms I photograph.
Here is a close up shot of those straight lines.

Proposed Names

6% (3)
Recognized by sight
-23% (4)
Recognized by sight: Doesn’t have a Suillus stature; doesn’t have partial veil; doesn’t have glandular dots; has a red and yellow stipe and a greenish pore surface that point away from Suillus
9% (4)
Recognized by sight: Who cares about the veil? It is what it is….
82% (1)
Recognized by sight: somewhat typical old specimens

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
return t the scene
By: Laurel (algoressister)
2013-10-28 08:49:10 CDT (-0500)

Because of the interest in this observation…
I returned to this mushroom.
I can clear up the “slimey” debate.
The cap is not slimey, just wet. There is a roughness, like the skin on a shark, and it is wet.
It has been foggy and it rained yesterday.
I did not have a knife.
Otherwise they both just look older.

There is a Suillus without ring and glandular dots
By: Denise Rhiner (denise7306)
2013-10-27 22:19:28 CDT (-0500)

Throwing my hat into the ring….At first glance, I thought this could very well be a boletus. I agree with your comments Igor. However, after a few stares and considerations, the cap does look slimy like a Suillus and does appear to have veil remnants. Interestingly, I had the same confusion this weekend at Discovery Park. I discovered a Suillus with no ring, no glandular dots but the same qualities above. I assumed Boletus until I came across Suillus sibircus in Arora. This Suillus grows with Western White Pine—sure enough, there was the Western White Pine. I don’t believe this is Suillus Lakei—stem looks entirely different—but it could be a Suillus that’s more uncommon.

What kind of trees was it found by?


Hi Igor, I agree
By: Terri Clements/Donna Fulton (pinonbistro)
2013-10-27 15:12:48 CDT (-0500)

with your comments. The point I was trying to make is that judging by the photo alone, since that is all the information we have, the cap could be slimy with partial veil remnants at the margin and given the conifer habitat and rather large angular pores this could be Suillus. I have seen species of Suillus in the east with reddish brown below the partial veil (or point of attachment thereof when it no longer exists as here) and yellow above. The stem is blurry to me so I can’t make out any texture but according to Kuo 3 factors are enough to consider the possibility that it could be Suillus: Kuo, M. (2004, November). The genus Suillus. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/suillus.html


Hello, Terri/Donna:-
By: I. G. Safonov (IGSafonov)
2013-10-26 22:00:29 CDT (-0500)

Here is what I think:
1) It’s not possible to tell from the picture whether the cap is slimy or just wet.
2) Association with conifers is not restricted to just Suillus.
3) What looks like remnants of a partial veil could well be an incurved sterile margin.
4) The angular pores, which by the way don’t appear to follow a radial pattern, are common in xerocomoid boletes, too.
5) The color scheme of the stem as well as the green (not ochraceous) pore surface are very, very atypical of a Suillus — flip thorough the Bessette book.
6) Contrary to what you said, I see no partial veil on the stipe below the yellow apex. Looking at the picture, the stipe is devoid or reticulation, glandular dots/smears and is not textured.

Hi Laurel,
By: Terri Clements/Donna Fulton (pinonbistro)
2013-10-26 13:00:26 CDT (-0500)

If you make a longitudinal cut through the mushroom you get a lot of information that helps with the ID: color and texture of the flesh of cap and stem, bruising of flesh, whether or not stem is hollow and so on. I carry a knife while foraging so I can cut and photograph it in the field.


Hi Igor,
By: Terri Clements/Donna Fulton (pinonbistro)
2013-10-26 11:03:37 CDT (-0500)

I think this has a lot of the features of Suillus: slimy cap, growth under conifers, what appear to be partial veil remnants at cap margin, rather large angular pores that appear to be radially aligned, red brown stem which is yellow above the partial veil (or point of attachment thereof), and ochraceous or olivaceous pores.


By: Laurel (algoressister)
2013-10-25 22:22:25 CDT (-0500)

I have added a close up shot of the lines I scratched on the stipe of this mushroom.

Any staining
By: Terri Clements/Donna Fulton (pinonbistro)
2013-10-25 21:18:56 CDT (-0500)

or bruising of pores or stem?

Created: 2013-10-25 16:15:22 CDT (-0500)
Last modified: 2014-03-24 12:51:35 CDT (-0500)
Viewed: 150 times, last viewed: 2017-06-16 18:18:15 CDT (-0500)
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