When: 2009-10-29

Collection location: Jedediah Smith State Park, Del Norte Co., California, USA [Click for map]

Who: Ron Pastorino (Ronpast)

No specimen available

Initially I was going to call these Suillus caerulescens or Suillus ponderosus. However, they didn’t exactly look like what I normally see in the northern Californis Bay Area.
The spores were so un-boletinoid that I thought I had mixed my records. Suillus imitatus apparently does have elliptical spores in the range that I saw ( approx. 7.6 X 4.5 microns, shorter than the S. caerulescens.
Also, these do fit the description in Thiers for the most part, including being faintly reticulate above the annulus. I did not note any bluing on the flesh of the lower stipe but I didn’t really specifically check for it at the time.
The habitat for this species is spruce and fir forests which this area was.

[admin – Sat Aug 14 02:01:29 +0000 2010]: Changed location name from ‘J. Smith State Park, Del Norte Co., California’ to ‘Jedediah Smith State Park, Del Norte Co., California, USA’


Proposed Names

61% (2)
Used references: California Mushrooms; H. Thiers
88% (2)
Recognized by sight: DNA evidence shows that this S. immitatus is really just a form of S. caerulescens. There is a bit of dry veil I can see so that adds to my confidence in calling this S. caerulescens.

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= Observer’s choice
= Current consensus


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