Growing in lodgepole pine and Englemann spruce forest along a Quaking aspen grove. It’s much less common than another brown-capped bolete, with bright yellow and smaller, consistenly-sized pores, that grows in this area. This mushroom with variable sized and rather large pores appears to have remnants of a ring on the stem. It has a rather odd cap color, basically tan but with a sort of greyish, bluish or greenish tinge. The pore surface is dingey yellow and bruises reddish brown. I have keyed it tentatively to the genus Suillus
Kuo, M. (2005, March). The boletes (“Boletales”). Retrieved from the MushroomExpert.Com Web site:


Proposed Names

-56% (1)
Recognized by sight
56% (1)
Recognized by sight: Viscid cap, green-brown tones, loose pores on fertile surface, glutenous veil.

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Also maybe S. umbonatus
By: Douglas Smith (douglas)
2007-09-19 06:25:22 CST (+0800)

I also kinda looks like an old and slightly squished S. umbonatus. Something to keep in mind while you id the thing. S. umbonatus will have the olive-green tones to the cap.

Suillus imitatus var. viridescens perhaps.
By: Ron Pastorino (Ronpast)
2007-09-18 23:58:35 CST (+0800)
One possibilty is Suillus imitatus var. viridescens (Bessette’s North American Boletes) of which the reddish-orange cap apparently does often display “flushed olive to blackish green or dull bluish green”. It is reported from Washinton, Oregon and Idaho. However the pore staining is described as “dingy cinnamon to dull brown”. Yours looks very red but I’m assuming it fades in a short time.