Observation 74031: Lanmaoa G. Wu et al.

When: 2011-08-15

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

Who: Dave W (Dave W)

No specimen available

I posted observations for this type of mushroom a little over a week ago. Collected a few more today. If not for the vivid red on the stipes, I’d propose “Boletus pseudosensibilis.” Blue bruising on pores is rapid and fairly intense, and the blue changes to reddish brown within an hour. Bluing of cut context is slow, and also fades to reddish brown or brown. No odor. Under oak.

KOH darkens cap, and is orange to orange brown on stipe, stipe context, cap context, pores, and tubes.


Spore print olive. Spores mounted in Meltzer’s darkened, but did not blacken strongly. 8-13 × 3-4.5

Proposed Names

48% (2)
Recognized by sight
48% (2)
Recognized by sight: Despite the red on the cap. Both boletebill and I.G. Safonov have recently posted similarly red stiped boletes as “pseudosensibilis.” Given the dull red cap color, bluing of all parts, and lack of any distinctive odor, this seems like the most reasonable proposal.

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus


Add Comment
No smell…
By: Dave W (Dave W)
2011-08-24 09:19:07 CDT (-0400)

As per other discussions, the biggest problem I’ve had with this type is the prominent red on the stipe. Looks like this may be a highly variable trait throughout this entire red/yellow complex.

flesh seems to blue too much for bicolor so I’m with you on this pseudosensibilis
By: Bill (boletebill)
2011-08-23 21:30:52 CDT (-0400)

No smell I guess.