Observation 216496: Leccinum duriusculum (Schulzer ex Kalchbr.) Singer
When: 2015-08-27
No herbarium specimen

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Eva,
By: I. G. Safonov (IGSafonov)
2015-10-03 21:08:39 EDT (-0400)

Thank you for sharing your ideas on the leccinum naming with me. Your comments on the habitat are very useful, too, as it’s the key to understanding the species. I think leccinums are the toughest boletes to identify as there is little variation in their morphology.
It seems that you get a lot more exposure to this genus in your area. My knowledge of scaber stalks is lacking for this exact reason, as well as the dearth of contemporary literature on the subject. You mention a dozen guides where this taxon is listed. Could you provide a couple of book titles (other than the Bessette guide) that are a good resource for naming leccinums in North America? Thank you.

Hello
By: Eva Skific (Evica)
2015-10-03 18:19:25 EDT (-0400)

to you too
I do not know whether the existence of leccinum duriassculum In N.
Ameriaca has been substantiated. Many other fungi are not substantiated and are found in many books.
When I think about how many synonyms of L.aurantiacum are described in details ..from experts in books through N.Amerika and Europe
one more or less will not destroy mycology (kidding)
Every so often we synomize or completely change the names
Seriously:
I do not know any more what is right or what is not

I recognize L.scabrum,L.pseudoscabrum, L.holopus, L.snellii,L.luteum
This leccinum fits the descriptions from a dozen books
I find it beneath Populus tremuloides-Populus grandidentata-Betula alleghaniensis—Betula papyrifera and some Cedar tree
Lowland forests along the river in the grass and vegetation
Until someone comes with a better name, for me will be Leccinum duriusculum

Eva,
By: I. G. Safonov (IGSafonov)
2015-10-03 15:20:30 EDT (-0400)

L. duriusculum is a European taxon: http://www.entoloma.nl/html/leccinum_eng.html#duriusculum.
According to the above source, it forms mycorrhizae with trees in the genus Populus.
Has the occurrence of this scaber stalk in North America been substantiated?

Created: 2015-09-19 09:50:06 EDT (-0400)
Last modified: 2015-10-03 08:39:53 EDT (-0400)
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