Observation 74821: Boletus gertrudiae Peck
When: 2011-08-27
No herbarium specimen

Notes: This was my first time ever finding B. gertrudiae, if that’s indeed what it is. Not surprisingly, I initially misidentified it as B. nobilis, which I am more familiar with. My mistake became apparent upon conducting macrochemical tests — the pore surface immediately turned pinkish-red with ammonia, and the exposed context did not react with KOH the way one would expect from B. nobilis.


Staining of the pore mouths with ammonia (aq)
The context immediately following dissection
Left half: staining of the tubes with ammonia; the context is negative
Right half: reaction of the context with 3% KOH (aq) produces a weakly pinkish staining

Proposed Names

57% (1)
Eye3 Eyes3
Used references: “North American Boletes” by Bessette-Roody-Bessette

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2011-08-28 14:26:27 PDT (-0700)
Last modified: 2011-08-28 14:26:28 PDT (-0700)
Viewed: 51 times, last viewed: 2017-07-01 17:20:08 PDT (-0700)
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