Observation 175350: Tylopilus P. Karst.
When: 2014-08-25
No herbarium specimen

Proposed Names

15% (3)
Recognized by sight
56% (1)
Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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I still think it’s a mixed collection
By: I. G. Safonov (IGSafonov)
2014-08-28 05:27:40 BST (+0100)

It’s conceivable that the tree(s) these were found under are mycorrhizal with different species of Tylopilus that happened to fruit concomitantly and in close proximity to each other. I’ve seen this happen. Once again, the top picture shows a robust young basidiome with reticulation visible in the middle of the whitish stipe, whereas the other one has a uniformly brown stipe with reticulation at the apex only. The stature is different, too, to further suggest more than one species.

Some Tylopilus species…
By: Dave W (Dave W)
2014-08-28 02:05:30 BST (+0100)

typically exhibit very different macro traits as a function of age. So I don’t think a compelling argument may be made for “mixed collection”. But the first pic seems to show relatively young specimens, when one has a better chance of pinning a name to one of these types.

Under Oaks
By: walt sturgeon (Mycowalt)
2014-08-27 20:44:33 BST (+0100)

These were growing together and were the only boletes in the area. Maybe not rubrobrunneus and probably not variobrunneus.

Dave,
By: I. G. Safonov (IGSafonov)
2014-08-27 04:28:45 BST (+0100)

I agree. This appears to be a mixed collection. The mushroom in the top photo reminds me of Tylopilus variobrunneus.

Walt, the first photo…
By: Dave W (Dave W)
2014-08-27 03:34:39 BST (+0100)

looks different from what I typically call rubrobrunneus. The upper 40% or so of the stipe (of the portion that appears to have been above ground) shows a thin widely spaced reticulatum. Also, the shade of brown on the cap is dark, but lacks the strongly purple tone I would expect in young rubrobrunneus.

Created: 2014-08-26 01:19:00 BST (+0100)
Last modified: 2014-08-28 17:00:36 BST (+0100)
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