See: Frank et al. Alessioporus rubriflavus. North American Fungi 12(2): 1-8

ITS rDNA sequences from 4 collections and LSU rDNA sequences from 2 collections were generated and deposited in GenBank, KC812305-6, KT223008-9 and KU736957-8. We aligned our ITS data with an additional 12 ITS sequences from GenBank; a total of 796 characters were aligned, with 484 remaining constant, 114 variable, and 198 parsimony informative.
A maximum likelihood tree generated from our ITS rDNA data with data from GenBank (FIG. 1) shows Alessioporus rubriflavus from the eastern United States most closely related to, and separate from, the European A. ichnusanus. Our molecular data and phylogenetic analyses agree with Gelardi et al. (2014) and, with strong bootstrap support, place the genus Alessioporus nearest to Pulchroboletus and the “Hemileccinum Clade” in the “Hypoboletus Group.” Here, we provide a second species to this previously monotypic genus.

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Reply to Alan R: DNA sequencing info
By: Arleen Bessette (MsMucor2)
2017-12-31 09:05:11 PST (-0800)

Alan, see DNA analysis info in my observation, above. All is in Genbank. I’ve also sent you you an email with this info, and a copy of the paper.

Do you have the sequence for this?
By: Alan Rockefeller (Alan Rockefeller)
2017-12-31 06:38:19 PST (-0800)
Use of images for non-commercial use
By: Arleen Bessette (MsMucor2)
2017-06-06 17:32:39 PDT (-0700)

Sure. Go ahead, Scott. These are 2 of the images from the paper.

Arleen, can you confirm the license for your photos?
By: Scott Pavelle (Scott Pavelle)
2017-06-06 16:49:36 PDT (-0700)

It’s marked as free for public use (like the Bolete Filter) so long as it’s a noncommercial use (again, like the B.F.) with appropriate credit & etc. That’s what you intended, correct? If so I will take advantage and post a copy.

Thanks in advance. Just confirming.

P.S. It’s DNA confirmed and the people who wrote the book gave the ID?! How is this not at 100%?