Observation 217247: Leccinum Gray
When: 2015-09-29
No herbarium specimen

Proposed Names

85% (1)
Eye3 Eyes3
Recognized by sight: red brown densely hairy cap with marginal flaps, whitish pores in button, white stem with white scabers that darken to blackish, white context that reddens then slowly grays, no bluing, on ground under mostly pine and hemlock—one small beech nearby

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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By: I. G. Safonov (IGSafonov)
2015-09-29 14:05:02 PDT (-0700)

I don’t think we know about the Leccinum in NA than we knew several years ago. I am not aware of any recent advances in the systematics of NA scaber stalks apart from Kuo’s poster that can be found at http://www.mushroomexpert.com/leccinumposter.pdf. And even this body of research doesn’t address the NA Leccinum to any appreciable depth.
I am of the opinion (based on my own collecting experience) that there are a lot of cryptic and undocumented leccinum taxa floating around in the Northeast that hasn’t been subjected to any serious studies. Seems like no one wants to touch the scaber stalks with a ten foot pole. :-)
I just came back from the Rochester area, where I found two different species of red/orange-capped scaber stalks growing practically next to each other in a big-tooth aspen & black oak stand. I struggled to key them out in Bessette. I will be posting them on MO later.
For more info on piceinum & vulpinum from Europe see http://www.entoloma.nl/html/leccinum_eng.html.

Igor, I know that Leccinum
By: Terri Clements/Donna Fulton (pinonbistro)
2015-09-29 13:43:18 PDT (-0700)

is a genus in flux according to M. Kuo but is it certain that L. aurantiacum doesn’t exist in NA? Some references say it occurs here under pine. No spruce in these woods—a passing reference in the Bessette book to spruce in association with L. piceinum. Where can I find more info on the two species you mention?


By: I. G. Safonov (IGSafonov)
2015-09-29 13:13:56 PDT (-0700)

L. aurantiacum, a hardwood-associated European species doesn’t exist in North America. Many NA species from all sorts of habitats and geographical areas are conveniently, and erroneously, dubbed aurantiacum. Based on the habitat these were growing in, I would think these are closer to L. piceinum or L. vulpinum. If you can, please preserve these.

Keys out to L. aurantiacum in NA Boletes, BRB, page 198
By: Terri Clements/Donna Fulton (pinonbistro)
2015-09-29 12:57:08 PDT (-0700)
Igor, I still have it and will try to key it out.
By: Terri Clements/Donna Fulton (pinonbistro)
2015-09-29 12:31:22 PDT (-0700)
By: I. G. Safonov (IGSafonov)
2015-09-29 12:24:57 PDT (-0700)

Did you try to key it out in Bessettes’ guide? Did you preserve this interesting collection?

Created: 2015-09-29 12:14:52 PDT (-0700)
Last modified: 2015-09-29 12:18:31 PDT (-0700)
Viewed: 36 times, last viewed: 2016-10-21 19:56:04 PDT (-0700)
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