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Under oaks and other mixed hardwoods.



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Also occurs
By: Roy Halling (royh)
2019-07-09 10:34:35 CDT (-0400)

in Costa Rica, Guancaste Prov. under Quercus brenesii near Cerro Pedregal and at lower elevation near Santa Rosa under Quercus oleoides. See NY#181454, NY#181455. Images are a tad dark.

By: I. G. Safonov (IGSafonov)
2019-06-30 23:09:30 CDT (-0400)

Yes, I would be shocked, too, if these two were conspecific by DNA.
The second point is that apparently gracilis is not a member of Austroboletus. That’s another shock. :-) I heard about that a while back from Roy Halling. In Wu et al. (2016) it sits in a separate branch together with the Asian Veloporphyrellus gracilior (for example their TEF-1 sequences are ~99% similar). Still our gracilis is a member of subfamily Austroboletoideae.

Thanks Igor
By: Alan Rockefeller (Alan Rockefeller)
2019-06-30 22:06:03 CDT (-0400)

These are a lot smaller than the Austroboletus I find under pine as well. I would be shocked if the sequences match.

Likely different from…
By: I. G. Safonov (IGSafonov)
2019-06-30 21:55:20 CDT (-0400)

A. gracilis, which is a northeastern species growing in hemlock woods.