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.

Images

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Staining of the pore mouths with ammonia (aq)
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The context immediately following dissection
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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 16:26:27 CDT (-0500)
Last modified: 2011-08-28 16:26:28 CDT (-0500)
Viewed: 46 times, last viewed: 2016-08-11 11:56:34 CDT (-0500)
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