Observation 70675: Boletus innixus Frost (Site ID) (Aureoboletus innixus)

From soil in predominantly hardwood area, at the base of a Quercus coccinea

4.4-3.2cm, convex, smooth, dry, light brown, cracked center with tufts of minute hairs or fibrils

Yellow, angular, not bruising

Faintly bruising yellow at apex around the edges when cut horizontally, and in the center of the apex when cut vertically in larger specimen.

Starting off an amber color, slowly turning red with yellow hues (?) …

Fungoid, pleasant.


5% KOH, red, 10% Iron Salt, clear but after a little bit the area was blue-green
5% KOH, a few seconds after applying the chemical…
Quercus coccinea

Proposed Names

28% (1)
Recognized by sight
35% (4)
Recognized by sight

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= Observer’s choice
= Current consensus


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Photos of stipe base and habitat photos added…
By: Matt Sherman (Shermanii)
2011-07-05 09:20:48 PDT (-0700)


By: Noah Siegel (Noah)
2011-07-03 08:57:13 PDT (-0700)

The very bottom of the stipe looks to be missing, should come to a point and have yellow mycelium…

By: Matt Sherman (Shermanii)
2011-07-03 08:52:04 PDT (-0700)

How can you tell the base is broken off? …It appeared to be intact to me.

Base is broken off…
By: Noah Siegel (Noah)
2011-07-01 19:35:40 PDT (-0700)

Cap is a little pale but everything else fits well for innixus

So I was thinking
By: damon brunette (damonbrunette)
2011-07-01 17:38:29 PDT (-0700)

Fused fruit bodies…. KOH reaction good…No reticulation or bruising….Yellow coloring inside the stipe….pores a match….cracking on the cap surface… This has got to be innixus. But Noah is going to say something like it doesnt have yellow basal mycelium or whatnot.
I couldnt wait to see what he named it.

Stipe’s not right for B. auriporus is it?
By: Tom Bruns (pogon)
2011-07-01 13:25:14 PDT (-0700)

It looks like a Xerocomoid somewhere near what is called subtomentosus.

Looked to me
By: Christian (Christian Schwarz)
2011-07-01 11:25:27 PDT (-0700)

like faded B. auriporus, but the KOH reaction seems too intense, and maybe not enough pink tones in the cap and stipe.

Created: 2011-07-01 10:43:48 PDT (-0700)
Last modified: 2011-07-07 09:12:40 PDT (-0700)
Viewed: 182 times, last viewed: 2019-02-14 01:09:00 PST (-0800)
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