These were growing on a large old fallen tree, probably Oak. First two photos show the log they were growing on. Spore print was whitish and not amyloid. Spores were ~ 5-6 X 2.5-3 microns. Cheilocystidia was ~ 30-40 X 15-16 microns. I may be wrong but they seem to match the macro and micro characteristics for Shiitake aka Lentinus edodes. There aren't many sightings of this species growing in the wild in North America that I can find and it certainly is a first for me if they are really Shiitake.