Observation 73921: Caloboletus Vizzini
When: 2011-08-13
No herbarium specimen

Notes: A single basidiocarp growing under oaks and other hardwoods. Though this bolete is lacking vivid tones, the brown cap nevertheless contrasts nicely with the dull purple-red reticulated stipe and pale beige-gray pore mouths. The context tastes somewhat bitter, but not anything like T. felleus or T. plumbeoviolaceus. This is the first time I see something like this, and I cannot even place it into any major bolete clade.


The context blues instantly, but it takes the color a few minutes to reach maximum intensity, at which time it slowly begins to fade away.
Staining of the context with 3% aqueous KOH (left half) and ammonia (aq) [right half]
Staining of the pileipellis with 3% aqueous KOH (left half) and ammonia (aq) [right half]

Proposed Names

-28% (1)
Recognized by sight
-28% (1)
Recognized by sight: Best matching the calopus-inedulis-roseipes clade
Used references: “North American Boletes” by Bessette-Roody-Bessette
28% (1)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2011-08-14 18:04:19 CDT (-0400)
Last modified: 2016-04-23 18:10:43 CDT (-0400)
Viewed: 48 times, last viewed: 2016-10-24 21:50:47 CDT (-0400)
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