Observation 113542: Boletus edulis group
When: 2012-10-14
No herbarium specimen

Proposed Names

91% (2)
Eye3 Eyes3
Recognized by sight: Under Blue Spruce on the edge of a lawn.
53% (1)
Recognized by sight: This is the American morph of Boletus edulis. I have sequenced it, and it is in the same clase as European B. edulis

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I forgot to check for…
By: Dave W (Dave W)
2012-10-17 04:51:44 PDT (-0700)

staining! These were collected on some friends’ property, and I left the mushrooms with them.

There were a few buttons left under the one spruce. Maybe I can get a little more info later this week. Rain and a warmup should bring on a few more.

They look good to me!
By: Martin Livezey (MLivezey)
2012-10-16 18:29:51 PDT (-0700)

Do you have a photo of a cross section or the color of the pileus when the pores are peeled back?

Thanks for the information 11134143.
By: Dave W (Dave W)
2012-10-16 16:48:33 PDT (-0700)

I am not surprised that some of the eastern NA edulis material has been shown to be the same as European material. I think that much of the edulis I find under spruce is non-native and likely came ashore with imported trees. I believe that the edulis type(s) which are native to my area are found in forested areas under hemlock, White Pine, or oak.

But I have taken to using the label “Boletus edulis group” because of the following reasons: 1. Collections I have made under spruce (usually Norway Spruce planted on lawns) seem to exhibit variable macro-traits. 2. It is unclear to me whether hybrid edulis forms have evolved.

One of these days perhaps someone will conduct a comprehensive study of NA edulis types… well, assuming someone can convince mushroom enthusiasts to sacrifice their ceps for science :-)

Created: 2012-10-15 18:25:37 PDT (-0700)
Last modified: 2012-10-17 05:20:22 PDT (-0700)
Viewed: 124 times, last viewed: 2016-10-27 22:26:50 PDT (-0700)
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