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Proposed Names

42% (2)
Recognized by sight: Cap green in FES04, orange in KOH, Negative in Ammonia, odor and taste not distinctive.

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= Observer’s choice
= Current consensus


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I mention the KOH reaction…
By: Dave W (Dave W)
2016-06-22 14:22:04 BST (+0100)

mainly because I wonder about the reliability of chemical reactions being invariant as per species.

For instance, consider Tylopilus rubrobrunneus. According to NAB/BRB, KOH on the purple cap causes it to “bleach pinkish brown”. MushroomExpert says “rusty orange” for KOH on the cap. I get this species on my property almost every summer I’ve lived here (since 2001; none seen yet this year). Here is a typical example of the greenish reaction that I have seen, obs 138813. I had been using a 4% KOH solution. When this appears again, I’ll use 10%.

The green FeSO4 reaction Walt got on the cap seen in this observation (242340) is similar to what is reported for mini-o in NAB/BRB, “grayish olive”. The KOH and ammonia reactions are each quite different what is seen in the field guide. So, I really wonder if this is a valid reason for not upgrading “promising” to “I’d call it that” for the mini-o proposal.

The pale yellow context in the cap of mini-o sometimes fails to register in photos.

By: Robert(the 3 foragers) (the3foragers)
2016-06-22 13:00:12 BST (+0100)

guys not every mushroom read the field guides.

Looks just like what I call “mini-o.”
By: Dave W (Dave W)
2016-06-22 01:58:07 BST (+0100)

Except the KOH reaction on the cap is different than what I recently got with a very similar collection, obs 241791.

In my experience, some good field characters are: whitish context in cap which stains light blue, pale yellow context in stipe (just a little different than in the cap), stipe base abruptly tapered, stipe thicker in mid section, tubes depressed near stipe even when young; and what Kate said… cap color pink (although sometimes mottled with olivaceous regions).

It’s all good – better than good – any way you view it.
By: Scott Pavelle (Scott Pavelle)
2016-06-21 16:52:25 BST (+0100)

This is why the Consortium can be so useful. Say your specimen is one of those that gets tested, and it turns out to be mini-o, or even a new species. By keeping such careful documentation we’re in a position to go back after the fact and build up a set of useful field characteristics.

And FWIW, my wife thought it was too pink to be the same bicolor we get at North Park. I’m not wedded to ANYTHING other than to make sure the notes I share are enough for people to actually use once DNA confirms the true identity.

Robert & Scott
By: walt sturgeon (Mycowalt)
2016-06-21 15:11:49 BST (+0100)

Thanks Robert for making my point. This is a good fit for Boletus miniato-olivaceous. According to Bessettes and Roody, this is a toxic species. Scott sees it as a good edible. My point in calling it Baorangia is that there are many “species” in this complex and eventually DNA will likely show they are related and should be in the same genus. I believe there is an undescribed species in this complex which has been mistaken for Boletus bicolor and has caused “minor” gastrointestinal issues. I never recommend B. bicolor as a safe edible.

By: Robert(the 3 foragers) (the3foragers)
2016-06-21 14:48:40 BST (+0100)

Check out boletus miniato olivaceus.

Well Scott
By: walt sturgeon (Mycowalt)
2016-06-21 14:28:47 BST (+0100)

This group is even more confusing than the red pored species.

This looks exactly like the ones I find at North Park
By: Scott Pavelle (Scott Pavelle)
2016-06-21 14:14:00 BST (+0100)

Maybe a bit more pink and less of a true red… What makes you hesitate on the ID?

Also, we’ve noticed that this mushroom has a particularly pleasing texture. It’s like cutting through a dense but not dry cheese. Does that match with your experience?

I also like it a lot in the kitchen. It’s a bit slimy if you cook it fresh, but really superior as a dried mushroom. Maybe 50-60% of a true edulis.