Observation 105801: Baorangia bicolor group

When: 2012-08-16

Collection location: Maine, USA [Click for map]

Who: Erlon (Herbert Baker)

No specimen available

quickly bluing, not bitter


Copyright © 2012 Erlon Bailey
Copyright © 2012 Erlon Bailey
Copyright © 2012 Erlon Bailey

Proposed Names

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Add Comment
By: I. G. Safonov (IGSafonov)
2013-07-21 15:18:38 -03 (-0300)

I am surprised you remember about my gastronomical preferences in the bolete family. :) No, I haven’t tried the yellow-footed bolete yet. It’s not that common in NJ, and in most cases it’s tough to find fresh and undamaged bolete specimens in the heat of summer.
That’s right, I don’t eat B. bicolor anymore. Yes, I don’t want to have GI issues in case I make a mistake. At the same time I am still curious about the general edibility of species within the bicolor group, so I might consider sampling some in the future. In the past I’ve eaten red-and-yellow bluing boletes that I was confident were B. bicolor with no ill effects, but I didn’t find them particularly tasty. Perhaps they are better in some dishes, but they are not suitable for soups, and have a weird taste when pan fried in butter or oil.

Did you see any blueing
By: Terri Clements/Donna Fulton (pinonbistro)
2013-07-21 14:37:30 -03 (-0300)

in the cap or stem flesh? Also, what trees where nearby? M. Kuo describes B. bicolor as mycorrhizal with hardwoods and with flesh that bruises slowly blue.

I.G. you mentioned you don’t eat them anymore due to the number of look alikes and listed some of your favorites. Does the list include Harrya chromapes? It has become one of my favorites.

Pore surface color
By: I. G. Safonov (IGSafonov)
2013-07-21 01:58:38 -03 (-0300)

According to B-R-B, B. bicolor var. borealis has an orange-red pore surface that turns brownish red in age. This mushroom most certainly started out with a yellow pore surface…

always blues on the pore mouths…
By: Bill (boletebill)
2012-08-27 15:47:40 -03 (-0300)

and usually quickly but the flesh of the cap rarely blues and if it does slowly and/or weakly. There’s two other things too: One you can get a false staining reaction if you have latex from certain Lactarius on your hands (this has been discussed here) and the other thing that I’ve never heard anyone mention is that SOMETIMES what appears to be a slight blue stain on the flesh of the cap near the tubes IS PROBABLY A SMEAR FROM THE KNIFE BLADE AS IT CUT THROUGH THE TUBES. Try this: If you think you have bicolor that stained the flesh blue when you cut it try breaking the flesh rather than cutting it and see if you get the same reaction.
OTOH there are bicolor look-alikes that do make people sick and do stain blue in the flesh sooooo…it’s a cluster already….

Thank you
By: Erlon (Herbert Baker)
2012-08-27 14:50:00 -03 (-0300)


By: I. G. Safonov (IGSafonov)
2012-08-18 20:12:02 -03 (-0300)

Depends on what you would include into the B. b. group. Even within the B. bicolor taxon / clade, the magnitude of the staining action is variable (probably due to environmental factors), but usually it’s not fast or intense on context; however, the pores may blue right away and sometimes faint bluing may occur on the stipe due to handling. Overall, it’s a very tough group with many “undocumented” look-alike that drive everyone insane, and it’s not getting any easier as more people foray and find new stuff. DNA sequencing is essential in sorting out this mess…

staining reaction
By: Erlon (Herbert Baker)
2012-08-18 13:02:50 -03 (-0300)

how fast is the staining reaction in the Boletus bicolor group?

Created: 2012-08-18 00:39:26 -03 (-0300)
Last modified: 2016-07-29 18:57:48 -03 (-0300)
Viewed: 104 times, last viewed: 2017-09-04 13:56:24 -03 (-0300)
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