Observation 104302: Boletus peckii Frost

When: 2012-08-05

Collection location: Bernardsville, New Jersey, USA [Click for map]

Who: I. G. Safonov (IGSafonov)

No specimen available

A single basidiocarp growing under mature oaks.
This is definitely the same species as that of obs 73921 collected at the same location the previous year. Same looks, size and stature. The one pictured here had much brighter colors; however, these faded after the mushroom was collected (compare 041.jpg with 009.jpg and the corresponding pics in 73921).


Bluing of the context is instant, but not intense
Staining with ammonia (left half) and KOH (right half)

Proposed Names

-57% (1)
Recognized by sight
44% (2)
Recognized by sight: Gestalt morphology
57% (1)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: I. G. Safonov (IGSafonov)
2017-07-31 20:31:37 CDT (-0400)

I agree, the bluing might have been more intense when fresh, but in my experience Caloboletus usually doesn’t stain as heavily as Boletus subvelutipes or Lanmaoa carminipes.
I have recently made my third collection of what I believe is the same species from this particular location, and will be posting it to MO soon. I did preserve a specimen this time and plan to get it sequenced for comparison purposes with my benchmark peckii collection, obs 246697.

Too bad you didn’t slice it open when you collected it.
By: Martin Livezey (MLivezey)
2017-07-31 19:42:01 CDT (-0400)
I bet the blue would have been more intense.
Thanks, GP
By: I. G. Safonov (IGSafonov)
2017-03-21 12:38:53 CDT (-0400)

I need to find this one again and get it described and sequenced.

nice find
By: GP Van Eron (reishiTea)
2017-03-21 11:40:17 CDT (-0400)

Created: 2012-08-08 12:00:40 CDT (-0400)
Last modified: 2017-07-31 18:44:45 CDT (-0400)
Viewed: 74 times, last viewed: 2018-02-14 18:22:27 CST (-0500)
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