Observation 282484: Tylopilus P. Karst.

When: 2017-07-15

Collection location: Meadowood Park, Mendham, New Jersey, USA [Click for map]

Who: I. G. Safonov (IGSafonov)

No specimen available

A NJMA Foray collection.
A group of several specimens growing in mixed deciduous woods dominated by oak. Doesn’t look like badiceps or indecisus to my eye. Might be ferrugineus, as KOH on cut flesh gave a pale yellow reaction (a feature listed in NAB, but not in BENA), but the stipe coloration (a wide white band at apex with a gradient of brown below) doesn’t add much confidence to this ID. The cut flesh started staining pinkish-brown within a few seconds, reaching full intensity withing a couple of minutes; it tasted mild with a bit of an astringent note early on. KOH on cap = mahogany-red; NH4OH = mahogany brown, paler than KOH.
While badiceps is usually a pretty distinct taxon, owing to its color of the cap and stipe, ferrugineus in my experience is a morphologically variable entity, leading me to think it could be a species cluster.
I didn’t save this collection even though the caps were largely free of insect activity; the stipes were thoroughly eaten by fly larvae.



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Add Comment
By: I. G. Safonov (IGSafonov)
2017-07-17 08:10:23 PDT (-0700)

You could be right, but in my experience fresh badiceps has a purple to purplish-brown cap with a beveled edge and darker, uniformly colored stipe. The mushrooms were growing in shady woods and it rained the night before. They closely resemble my purported ferrugineus collection from several years ago, obs 74058. I agree that even though the chemical tests are not consistent with badiceps, the species should not be ruled out from consideration based on this fact alone.
I think we should diligently record chemical rxn outcomes for well-identified collections of badiceps, ferrugineus and other brown, mild-tasting Tylos. NEMF will give us a perfect opportunity to do so. After years of collecting, I am almost convinced there is at least one cryptic look-alike of badiceps/ferrugineus in eastern USA. DNA should help. Though I am not really keen on sequencing collections from this section of Tylopilus at this time, I might look into it in the future. Having said this, perhaps it wouldn’t hurt to start saving specimens from this year on…

I think
By: Robert(the 3 foragers) (the3foragers)
2017-07-17 05:02:40 PDT (-0700)

You have Badiceps. Stipe does not look like any of the T.ferrugineus we see. And cap color is of for that. Just because some color and chemical reaction does not add up I think you have Badiceps.

Created: 2017-07-16 20:16:14 PDT (-0700)
Last modified: 2017-07-17 08:10:51 PDT (-0700)
Viewed: 46 times, last viewed: 2018-07-10 14:11:03 PDT (-0700)
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