When: 2014-04-28

Collection location: Larksville, Pennsylvania, USA [Click for map]

Who: Phil Yeager (gunchky)

Specimen available

Found on downed Poplar. Sweet fragrant aroma.


Proposed Names

30% (3)
Recognized by sight
53% (3)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
Thanks Fredo!
By: walt sturgeon (Mycowalt)
2014-05-05 21:46:02 CDT (-0400)

Now I know all my identifications of Trametes elegans are wrong! Snarl…
But it is good to use a familiar name even if I thought it was limited to Europe.

By: Phil Yeager (gunchky)
2014-05-05 20:43:27 CDT (-0400)

If any of my future obs. atract your interest please advise and I will promptly post them to you. Thanks again. Phil

Thanks Phil
By: Rocky Houghtby
2014-05-05 17:45:34 CDT (-0400)

We look forward to looking at your collections.

Fredo, thank you for the information! I am curious if any Midwestern material has been included in the studies from which you’ve drawn your suspicions regarding the range of T. elegans?

Terri and Donna
By: Phil Yeager (gunchky)
2014-05-05 17:36:49 CDT (-0400)

Thanks again for your assisstance.

By: Phil Yeager (gunchky)
2014-05-05 17:29:28 CDT (-0400)

Thanks for your comments, they eliminated some questions that I had about these two species. Until proven otherwise, I shall call future collections Trametes gibbosa. Phil. One other question. I have been trying to obtain a copy of North American Polypores – both volumes- by Gilbertson & Ryvarden. They seem to be out of print. Any suggestions?

By: Phil Yeager (gunchky)
2014-05-05 17:25:19 CDT (-0400)

The specimens are on teir way and should arrive in about one week. Thanks. Phil

gibbosa/elegans in the USA
By: Alfredo Justo (Fredo)
2014-05-05 09:52:56 CDT (-0400)

There is an ongoing discussion about T. elegans/T. gibbosa here at MO so Walt Sturgeon has asked me to try shed some light on the issue.

The identification of gibbosa/elegans specimens in North America remains difficult at this point. Both species have a complicated taxonomic history that only now we have begun to unravel.

Trametes gibbosa was not confirmed to occur in the USA until Kout & Vlasak reported it from Quebec and Pensylvania (http://www.nrcresearchpress.com/...) . Both molecular data and compatibility test confirmed this was the same species as the European T. gibbosa. These authors noted that specimens in the Northern parts of the US have probably been identified as T. elegans, since no other similar species was present in the keys of Gilbertson and Ryvarden (Gilbertson, R.L. & Ryvarden, L. 1987. North American Polypores. Vol. 2.). Kout & Vlasak cite the following morphological differences between gibbosa (basidiocarps 5-10 cm thick at the base, with distinctly hirsute upper surface and small pores regularly elongated) and elegans (basidiocarps less than 1 cm thick, upper surface not hirsute and more irregularly shaped pores in part distinctly lamellar). They caution that all these charactes can be variable. I have found T. gibbosa in Massachusetts and New Hampshire.

T. elegans is a widely reported species across the tropical and subtropical areas of America, Africa and Asia. In our initial molecular studies (http://wordpress.clarku.edu/polypeet/projects/trametes/) we found 3 distinct molecular groups, but we did not went any further into trying to figure out what was going on. In a paper now in press (soon to be published in Mycologia) we have taken a closer look at some species complexes in Trametes. We have confirmed that there are at least 3 different species under the name T. elegans: one species that occurs in the Southeastern USA; a second species that occurs mostly in Central and South America and the Caribbean region and that represents the true T. elegans; and a third species that seems to be the more abundant in the Asian tropical region.

Long story short: T. gibbosa occurs in the Northern parts of the USA and Canada, and all records of “T. elegans” from this area should be at least suspected to represent T. gibbosa. The true T. elegans probably does not occur in the continental USA, but there is a member of this species complex that occurs in the Southeastern USA. How South does T. gibbosa extends and how North does the North American “elegans” goes remains to be determined.

Thanks Rocky.
By: Phil Yeager (gunchky)
2014-05-03 16:07:53 CDT (-0400)

I sent you an e-mail.

By: Rocky Houghtby
2014-05-02 23:32:49 CDT (-0400)

We would be happy to take your collections at the Chicago Field Museum of Natural History, especially if they are supported with images and collection notes.

By: Terri Clements/Donna Fulton (pinonbistro)
2014-05-02 20:21:56 CDT (-0400)

see http://wordpress.clarku.edu/polypeet/projects/trametes/ —may help to explain it.


There seems to be
By: Phil Yeager (gunchky)
2014-05-02 19:53:55 CDT (-0400)

a major malfunction regarding L. elegans and T. gibbosa. L. elegans is reportidly tropical to subtropical, and suppossedly migrated north, perhaps due to warming. T. gibbosa; a European species is pressumed to have crossed the oceans on wooden cargo, etc. Does anyone have a definitive answer? I have specimens available for any scientific endeavor, which I would post to any interested person at my own cost.

Created: 2014-04-30 21:27:37 CDT (-0400)
Last modified: 2014-07-12 10:39:18 CDT (-0400)
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