Observation 193188: Suillus fuscotomentosus Thiers & A.H. Sm.

When: 2014-12-10

Collection location: El Dorado, California, USA [Click for map]

Who: Andrew S (AmatoxinAndy)

No specimen available

Growing in leaf litter near bottom of draw in the area of live oak, manzanita, gray pine, and ponderosa pine. Growing in groups, fairly abundant in limited areas where found.

Cap mottled brown w/tan. Cap surface wet, slightly viscid. Cap 8 cm diameter in representative specimen but both smaller and larger observed. Context a creamy lemon yellow color. Tubes/pores a dingy yellow color.

Stipe crooked in this specimen (and often so otherwise), length 8 cm, diameter 1.5 cm in this specimen. Some brownish streaks on surface and faintly reddish streaks in cut sample. This and some texture to stipe causes me to lean toward Leccinum genus, but no obvious scabers or resemblance to any species I’ve seen in references.

No blueing when bruised or cut. Existing cut in cap showed yellow context, no reddening.

Odor: faintly mushroomy

Taste, raw: mild but some, mushroomy

Clearly a “bolete,” but beyond that, ID unclear. Suggestions welcome.


Good view of typical cap surface
Pores readily visible to naked eye
This cross-section is from a smaller specimen as featured one had worm damage.

Proposed Names

-27% (1)
Recognized by sight
53% (1)
Recognized by sight
82% (3)
Recognized by sight: dark, slimy-scaly cap; common in this area with ponderosa pine

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
thanks for suggestions
By: Andrew S (AmatoxinAndy)
2014-12-21 08:56:37 MST (-0700)

The Suillus fuscotomentosus looks probable here given that the specimens did not blue when handled or cut. This would be a point of differentiation from S. tomentosus.

Created: 2014-12-11 11:11:35 MST (-0700)
Last modified: 2014-12-21 10:07:24 MST (-0700)
Viewed: 64 times, last viewed: 2017-06-19 13:33:21 MDT (-0600)
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