When: 2009-08-18

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

Who: Dave W (Dave W)

Specimen available

KOH reactions: nearly negative on cuticle… pale wash. Very dark brown/red/maroon on stipe surface. Quickly bark brown on stipe context. This does not match the info provided in B/R/B. Waiting for some spores. Fourth pic is indoors; took it just to show the deep reddish brown stain in the stalk base context that developed over time.


Copyright © 2009 Dave in NE PA
Copyright © 2009 Dave in NE PA
Copyright © 2009 Dave in NE PA
Copyright © 2009 Dave in NE PA

Proposed Names

28% (1)
Recognized by sight: This one reminds me of B. miniato olivaceus, which I find mostly every summer… in a different spot. Cut context stains somewhat slowly dark blue, and then after an hour or so, deep reddish staining sets in. Stalk yellow but flushed reddish on lower half. cap lacks olivaceus tones.
56% (1)
Recognized by sight: just corrected the name of the species
46% (2)
Recognized by sight
61% (2)
Recognized by sight: Trying to ID these reddish capped, yellow pored boletes from pictures is tough… But I think this is more like Boletus pseudosensibilis than B. pallidoroseus.

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= Observer’s choice
= Current consensus


Add Comment
I think I had bypassed pseudosensibilis…
By: Dave W (Dave W)
2013-07-23 17:55:37 PDT (-0700)

on the basis of slow bluing over a seemingly small precentage of cut context. So I had missed the possible KOH correlation with this species.

I suppose that, like some other red and yellow types, bruising reaction may vary. Nice call Noah.

The red mottled
By: Dave W (Dave W)
2010-12-06 17:38:38 PST (-0800)

rather than reddish brown streaked stipe surface appears to match pallidoroseus better than mini p.

Boletus pallidioroseus
By: walt sturgeon (Mycowalt)
2009-08-19 19:39:30 PDT (-0700)

It might be that species. The odor when fresh can be pleasant, similar to Boletus sensibilis.

By: Dave W (Dave W)
2009-08-19 17:12:41 PDT (-0700)

Left out the second “l”. The perils of late night posting.

Actually, I found another candidate ID that fits the KOH profile better. I think this may be Boletus pallidoroseus. I got more material today. I’ll post it later under the name “B. pallidoroseus.” One thing about mine that doesn’t fit B. pallidoroseus is the lack of odor.

Taste mild. (No I didn’t have it for supper today…)