Observation 206426: Butyriboletus brunneus (Peck) D. Arora & J.L. Frank
When: 2015-06-12
No herbarium specimen

Notes: The only trait that seems to match very well with the BRB description of “speciosus var. brunneus” is that the cut context on this specimen did not quickly stain blue. After several minutes only a slight spotty change to blue was observed. The reticulation of this specimen looked somewhat different than what I have

BRB mentions the similar but rare species B. pseudopeckii. The short description of this species mentions the lack of prominent staining on the context.

Mixed woods near large basswood tree. No oak in this immediate area.

Proposed Names

86% (1)
Eye3 Eyes3
Recognized by sight: See notes.
Used references: "Boletus speciosus var. brunneus in BRB.
Based on microscopic features: spores conform to shape and size reported in BRB.
Based on chemical features: KOH on cap slowly amber/orange. Ammonia on cap pinkish at first then orange.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2015-06-13 11:49:50 CDT (-0400)
Last modified: 2015-06-13 11:54:10 CDT (-0400)
Viewed: 32 times, last viewed: 2016-10-21 19:10:16 CDT (-0400)
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