Observation 177955: Boletus subcaerulescens ( E.A. Dick & Snell) Both, Bessette & A.R. Bessette

When: 2014-09-07

Collection location: Nicolet National Forest, Oconto Co., Wisconsin, USA [Click for map]

Who: Daniel Z (daniel.z)

No specimen available

I’ve been foraging king boletes for years now, though mostly in the Colorado Rockies. In this instance the main differences I noticed were the light to dark brown reticulation on the stem which was present on both young and older specimens. The caps tended to be a reddish brown color and I didn’t notice any particular staining underneath. I’m fairly confident these are king boletes but due to how different they look from what I’m used to, I am wondering as to whether this is a specific variant of b.edulis which I am not familiar with.



Proposed Names

52% (1)
Recognized by sight
72% (2)
Eye3 Eyes3
Recognized by sight: Some collections show little or no bluing. If there is some bluing, you may need to check the context of a mature specimen where the tubes attach.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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VERY NICE PICTURES!!! Where did you find them in the park?
By: tendermos
2016-09-16 17:50:08 BST (+0100)

Where did you find them in the park?

Pine seems to be the most frequent associate…
By: Dave W (Dave W)
2014-09-14 01:11:56 BST (+0100)

of subcaerulescens. I find this type in only a few spots here in NE PA. One spot produces fruit bodies that show no bluing at all. I used to call these “Boletus pinophilus.” But after a fair amount of discussion I am convinced that the name subcaerulescens applies to both the bluing and non-bluing collections. The prominent brown reticulatum is usually a good ID character. But on very young specimens the coarse/raised/thick reticulatum may be white.

Subcaerulescens looks about right
By: Daniel Z (daniel.z)
2014-09-13 18:54:42 BST (+0100)

Thank you for the insight. These came across as b.edulis to me but the differences made me wonder if I indeed had something different here. I did not see any bluing on younger specimens though the older ones seemed to have some darker spots which may have been that “almost bluing” which these seem to be associated with. I have picked other boletes in the area which more closely resembled b.edulis so I knew there was something a bit different about these. I found many of them growing in a grove of young pine trees, though also some scattered throughout mixed woods.

Created: 2014-09-12 22:46:32 BST (+0100)
Last modified: 2016-09-16 18:24:07 BST (+0100)
Viewed: 140 times, last viewed: 2018-01-29 18:11:41 GMT (+0000)
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