Observation 69743: Mixed collection
When: 2011-06-20
No herbarium specimen

Proposed Names

48% (3)
Recognized by sight
54% (4)
Recognized by sight: First three pics. (I agree that the fourth pic shows separans.) Stalk entirely and coarsely reticulate. Cap somewhat pitted.
92% (2)
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Mixed collection
By: walt sturgeon (Mycowalt)
2011-07-02 15:59:00 CEST (+0200)

Top 3 pics are B. edulis (or what is called that in E. North America) Bottom pics are Xanthoconium separans. Opinion of Bill Roody and I think he is correct.

color reactions
By: John Plischke (John Plischke)
2011-06-22 02:19:24 CEST (+0200)

The pink areas will turn green with koh. Areas that are not pink lack the green reaction.

By: walt sturgeon (Mycowalt)
2011-06-22 00:53:31 CEST (+0200)

You will get different reactions depending on the color of the cap. You will get different reactions on the lilac areas than those you will get on the paler areas.

By: damon brunette (damonbrunette)
2011-06-21 22:58:58 CEST (+0200)

since you still have them, try ammonia. Maybe I have strong (5%) KOH, but on seperans, i ALWAYS get color change. Ammonia will most definitely give a reaction

Two more photos
By: Eva Skific (Evica)
2011-06-21 22:18:13 CEST (+0200)

The chemicals were placed on the cap and steam

Chemical reagent color change
By: walt sturgeon (Mycowalt)
2011-06-21 18:28:50 CEST (+0200)

Is variable. KOH will have very different reactions depending on pigment and where the drop is applied.

Actually, I thought the fourth
By: Dave W (Dave W)
2011-06-21 18:05:17 CEST (+0200)

image looked like separans. But this unexpanded mushroom does not show a lot to go on.

Regarding the Bessette description of nobilissimus, “clavate” does not seem like too much of a stretch for the stipe seen in the first two pics. But the lack of prominent pits on the cap did bother me. It looks like the cap is weakly pitted on the specimen in the first two pics. I don’t have the big bolete book with me right now, but I think B/R/B mentions that nobilissimus may rarely show only weak pitting on the cap.

I think maybe I would have been better to post “Boletus sp.” as an alternative ID.

By: Eva Skific (Evica)
2011-06-21 17:43:02 CEST (+0200)

You’re right
fourth image is wrong.

Did not change color with KOH or with Iron salt as Xanthoconium separans should.
aaagh! eastern boletes!
By: Debbie Viess (amanitarita)
2011-06-21 17:39:22 CEST (+0200)

OK, better now.

According to the Bessettes, noblissimus should have a clavate to strongly bulbous base; don’t see that here.

X. separans also has a pitted cap, strong raised reticulation and highly variable coloration.

Boletus nobilis is also a possibilty; Kuo lists X. separans and B. nobilis as synonyms!

Gentlepersons, continue with your debate!

Think dave
By: damon brunette (damonbrunette)
2011-06-21 17:14:24 CEST (+0200)

Is onto something here . Agree mixed collection of nobilis and seperans

The separans I find
By: Dave W (Dave W)
2011-06-21 05:20:32 CEST (+0200)

generally has stipe either white (like the one in the fourth pic) or flushed pinkish to light purplish. The browinsh tones in the stipe seen in pics 1 and 2 seem unusual to me.

it does look a lot like a little edulis…
By: Debbie Viess (amanitarita)
2011-06-21 02:29:14 CEST (+0200)

I got faked out myself by this species when I hunted back east.

Created: 2011-06-21 00:16:53 CEST (+0200)
Last modified: 2014-03-21 21:19:57 CET (+0100)
Viewed: 248 times, last viewed: 2016-10-25 15:31:02 CEST (+0200)
Show Log