Probably Boletus smithii

Posted 11/27/12 by Elmer - - - - - Scroll Down for the discussion


Here is what Paul and I found


The Stem is definitely Red-ish


It stains Blue Green


This shows it cut


The Stem is Yellow when cut


Here is the bottom of the stem


Here is a spore print
I would say it is Olive Brown


The spores are oblong or spindle shapped
They measure 4.5 by 11 to 14 microns

Elmer: Paul and I found some good looking Boletus,
however, they have a somewhat red stipe and they stain blue green.
Am I correct in concluding that these ARE NOT EDIBLE?

Sava: Please explain how you got to this conclusion.
Can I suggest that you try the PNW key;
it's on the Key Council site:

Judy: The overall size of the mushroom, plus the size/shape of the stem in relation to cap size
will help get you to the correct identification.
Also note the cap surface texture. And Sava’s hints are good – you can find it there.

Elmer: After looking at the key and various other sources like Michael Wood's web site ,
I am inclined to think that these are:
Chalciporus piperatoides also known as Boletus piperatoides
or Chalciporus piperatus

Judy: No, it is not. That mushroom has reddish pores, and a very yellow stipe base.

Elmer: I have tried to go back and figure that out, but it is not easy.
I am fairly comfortable in thinking that what we have are Boletus smithii
Let me know if you think I am still off track (which is entirely possible)

Do you think that might be correct. ----------------------------

Note: taste is not bitter -- The taste is very mild
Spore print is Olive Brown
Spores are oblong or spindle shaped 4.5 microns to 11 to 14 microns

Scroll down to see a spore print and pictures of the spores
click below to see some references of Boletus smithii

Click here for first reference
Click here for second reference
Click here for third reference

It is not Chalciporus piperatoides - spores not red

Click Here to see a description of Chalciporus piperatoides in

Click on a Thumbnail to enlarge the image