Observation 75583: Tylopilus rubrobrunneus Mazzer & A.H. Sm.

When: 2011-09-03

Collection location: Hunlock Creek, Pennsylvania, USA [Click for map]

Who: Dave W (Dave W)

No specimen available

Harvested from the same spot on my property as observation http://mushroomobserver.org/70102?q=6jJr (and a few others). Staining on stipe was apparent at the time I picked the mushroom. Upon handling, I did not observe any additional staining on the stipe. Noah had suggested that T. rubrobrunneus may show olivaceous bruising/staining on the stipe. Took some notes on KOH reactions… but misplaced them! (No computer for 5 days while the power was out.) As I recall, there was not much color reaction to KOH on the cap, stipe, or context. The more I look at photos, the more this looks like T. rubrobrunneus; but it’s difficult to rule out T. violatinctus.

Note the subreticulate stipe apex.

So it may be back to square one with this one. Probably need to wait until next year, as this type fruits during late spring through most of summer.

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Very bitter.
By: Dave W (Dave W)
2011-09-07 04:43:35 CEST (+0200)

These fruit for 8-10 weeks on a mowed slope by a wood border on my property. There have been three major flushes this summer. So, I’ve had the opportunity to examine many specimens. At least I’ve finally eliminated T. plumbeoviolaceus as a possibility. (Stipe is not putple). Colors in the photos are true to form.

Thanks for the input, Igor.

By: I. G. Safonov (IGSafonov)
2011-09-07 04:21:40 CEST (+0200)

You don’t mention the taste — was it mild or bitter? Since you only discuss T. violatinctus and T. rubrobrunneus as possible ID’s, should I infer that it tasted bitter?
Your bolete is a young specimen, and in my experience young T. rubrobrunneus basidiocarps have whitish stipes staining olive brown when handled and deep purple caps. The overall color scheme in your pics is some shade or brown, unless of course your camera distorts the colors, not lilac or violet-purplish which are typical of T. violatinctus. Why can’t this one be from the badiceps-ferrugineus-indecisus complex?

Created: 2011-09-06 22:29:37 CEST (+0200)
Last modified: 2012-01-17 02:21:47 CET (+0100)
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