Observation 204753: Suillus tomentosus (Kauffman) Singer

When: 2015-05-19

Collection location: San Gorgonio Wilderness, California, USA [Click for map]

Who: alienprophecy

No specimen available

Mushroom was found on a grassy, sloped meadow, with others nearby (perhaps five or so). Elevation was over 7000 feet. Area was mildly disturbed, perhaps from occasional foot traffic. About an inch of snow had fallen two days prior, although it had all melted by the time I’d gotten to this location. There were some shrubs nearby—perhaps California Scrub Oak.

Two of them were found intact, and one with a section of the cap missing (pictured); the rest had been either picked and discarded or uprooted by animals. Upon cutting one specimen through the stipe at ground level, it began staining blue steadily and gradually, until it seemed to finish changing color after a minute or so.

Cap had a somewhat “tacky” feel at first, which gradually became slippery after a couple of hours then dry again. An attempt to wash one off made it slippery again.

Spore print didn’t produce much, with olive-green parts drying to brown. It left a yellow and blue stain on the index card, though. I tossed the card out after I had decided that it was probably a Poor Man’s Slippery Jack, but I’ve decided to post some pictures here in case the information could benefit scientists in some way—especially since I’ve never seen any postings about mushrooms being found in the San Bernardino Mountains with these tube-style hymeniums.

One thing going against my guess is how the pore pattern seems to continue along the stipe for 1-2 cm (see the close-up). I don’t know if it’s just an environmental variation or an indication of it being something else. I’d be happy to mail in my speciment to an herbarium, if given instructions on how to do so.


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About a minute after harvesting
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In ground, with grasses & duff swept away
At home, close up, a couple of days left in bag
Rotated view
Third mushroom, looks like I brought home visitors…

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Created: 2015-05-21 14:22:33 CDT (-0400)
Last modified: 2015-05-21 14:53:17 CDT (-0400)
Viewed: 32 times, last viewed: 2017-06-20 04:27:06 CDT (-0400)
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