Observation 25202: Boletus L.

When: 2009-09-13

Collection location: Luzerne Co., Pennsylvania, USA [Click for map]

Who: Dave in NE PA

No specimen available

Mixed woods. Solitary. Taste bland. Odor slight, similar to many other boletes. KOH profile: black on cap then fades to red, orange on pores, negative on context (or maybe just very slightly tan). Flesh whitish. No staining or bruising.

Proposed Names

30% (2)
Used references: BRB
54% (3)
Recognized by sight: does not match the description of innixus in the Bessette Bolete Book. what it is, tho….?

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Well, the cap color does seem a bit dark
By: Dave in NE PA
2009-09-13 19:51:54 PDT (-0700)

for innixus. But the large bright yellow pores and lack of staining match the description in BRB. KOH profile is “ballpark” close to BRB’s. BRB shows two pics of innixus. The one pic shows the ones with bulbous stalks. But the other pic shows ones with the slightly swollen stalks that taper below, much like what one sees on my specimen. B. auriporus is very similar. B. subtomentosus exhibits some staining.

Could be B. innixus
By: I. G. Safonov (IGSafonov)
2009-09-13 19:18:21 PDT (-0700)

The stipe is not bulbous enough and does not have an appendix, but other than that it fits the description of B. innixus, including the KOH reactions. This mushroom is too stocky for B. auriporus + macrochemical tests don’t match, so I vote in favor of the former. The B. innixus I find in NJ is more uniformly brown and surprisingly never grows in clusters.

Created: 2009-09-13 18:49:26 PDT (-0700)
Last modified: 2016-04-23 10:20:04 PDT (-0700)
Viewed: 85 times, last viewed: 2017-06-06 00:37:31 PDT (-0700)
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