Observation 207221: Baorangia bicolor (Kuntze) G. Wu, Halling & Zhu L. Yang
When: 2015-06-19
No herbarium specimen

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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After carefully examining…
By: Dave W (Dave W)
2016-09-05 21:55:44 CDT (-0400)

many fruit bodies of red/yellow boletes this summer, my opinion is that the black staining on the cap surface is an occasional trait associated with B. bicolor, at least in my area.

The obses…
By: Dave W (Dave W)
2015-06-29 08:24:04 CDT (-0400)

obs 207221 and obs 207503 were made in the exact same location only 4 days apart.

By: I. G. Safonov (IGSafonov)
2015-06-29 00:47:51 CDT (-0400)

Actually I think that obs 138794 and obs 207503 have a little more similarity to each other than to this one. However, they could all be the same thing as they came from the same park and maybe even the same general location/spot.

NAB-02 looks similar.
By: Dave W (Dave W)
2015-06-29 00:30:36 CDT (-0400)

But I think BRB would have mentioned the black bruising on the cap. So I think this one is different.
I dug up this old obs from the same location obs 138794 . Red and yellow bolete with black staining on the cap surface.

By: I. G. Safonov (IGSafonov)
2015-06-29 00:13:08 CDT (-0400)

this one might be the same as Boletus sp. nov. (NAB-02) in BRB. See p. 351/363.

Karen had brought this one home.
By: Dave W (Dave W)
2015-06-25 08:45:38 CDT (-0400)

I didn’t think to examine it very closely… looked like a typical bicolor. I didn’t notice the black stain until I viewed the photo. Previously, I had just thrown it into a mushroom/veggie saute. Tasted good.

The two of us went back to the same spot, where this other bolete was collected, obs 207503.
Look at all the staining on this one!… which also looks like a typcial bicolor, at first.

I suspect that something is causing the local boletes to exhibit atypically strong staining reactions. Yesterday, I got a subcaerulescens where a prominent blue bruise on the pores eventually turned to a blackish-purple. Will post later. Those subcaerulescens we found in Nescopeck Park showed more than the usual amount of bluing.

Maybe the extreme amounts of rainfall play a role? In the past I believe I have noticed a correlation between rainfall amounts and intensity of staining on bicolor. So maybe this is only a bicolor with atypical staining.

By: I. G. Safonov (IGSafonov)
2015-06-24 14:53:54 CDT (-0400)

Apart from the prominent bruising on the cap, how are these different from the bona fide Baorangia bicolor, i.e. what’s the staining like on the context and what about the standard macro-chemical tests on surface & context?

I visited the collection site for these.
By: Dave W (Dave W)
2015-06-24 00:32:39 CDT (-0400)

Found more of these. They really look like bicolor, until the prominent black bruising develops on the cap. Some bluing on various parts of the context. I think this may be something other than bicolor.

See obs 207503.

It seems
By: Phil (gunchky)
2015-06-23 20:16:08 CDT (-0400)

that various genera are changing faster than I can keep up with nomenclature. Frustrating!

late to supper?
By: Debbie Viess (amanitarita)
2015-06-23 13:25:02 CDT (-0400)

yup, it is common knowledge that only the porcini (worldwide) will remain in the genus Boletus. Still, some of these new and seemingly never ending bolete genera are mind-boggling.

Oh well, guess that it’s time to shut up, unlearn and relearn!

Baorangia! Geshundheit!

That’s quite a mouthful…
By: Dave W (Dave W)
2015-06-23 13:16:13 CDT (-0400)

Rheubarbariboletus. Can’t wait to hear somebody use it in a complete sentence. Good spelling bee material.

So what do we currently call the entity that we do not call rubellus?

By: Noah Siegel (Noah)
2015-06-23 11:37:25 CDT (-0400)

We should hold off using Hortiboletus rubellus on North American taxa, because most of what we call rubellus here in NA isn’t even in the same group as European stuff.

There is also Rheubarbariboletus for another group of smooth-spored xerocomoid taxa…

Among several other…
By: Dave W (Dave W)
2015-06-23 11:05:20 CDT (-0400)

weird new genera. I ran across “Hortiboletus rubellus” on Index Fungorum the other day. Somebody (probably Walt or Noah) told me that all of the (former) Boletus species, except for the edulis types, will be moved to new genera.

By: Debbie Viess (amanitarita)
2015-06-23 10:54:18 CDT (-0400)

A weird new genus.

Looking at this again…
By: Dave W (Dave W)
2015-06-23 08:20:58 CDT (-0400)

there appears to be some black bruising on the cap surface, although it is not clear to me whether or not this is just some dirt on the cap. I have collected a black-bruising red and yellow bolete at this location in the past which I hesitate to call bicolor.

I’ll return to the collection site asap and see if there’s more material.

Created: 2015-06-21 09:13:55 CDT (-0400)
Last modified: 2016-09-05 21:53:51 CDT (-0400)
Viewed: 235 times, last viewed: 2017-02-19 19:44:17 CST (-0500)
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