
Pleurotus_2024-06-24 SW Michigan USA
We found this astonishingly large fruiting at the base of an esker, next to a cedar swamp. I'm going to stick my neck out and call it Pleurotus pulmonarius. Baroni in his 'Mushrooms of the NE US and E Canada' field guide says that it is likely to be found on beech logs and there are quite a few gorgeous beech trees growing on this esker.
A closer view:

"Pleurotus pulmonarius" is a mushroom very similar to "Pleurotus ostreatus", the pearl oyster, but with a few noticeable differences. The caps of "pulmonarius" are much paler and smaller than "ostreatus" and develops more of a stem. "P. pulmonarius" also prefers warmer weather than "ostreatus" and will appear later in the summer.