See, I was gonna say the exact same thing. But then I thought no, you're just making up words (I spelled Stereum and Polyporus a little differently than KT did...) so I went with my gut and said Trametes.Ha, ha, but what does the underside of the brackets look like? If the undersides lack pores, it's an easy call as Stereum ostrea. If tiny pores are present, first check Polyporus badius. Also, the presence or absence of tiny hairs on the upper surface of the brackets can help confirm.
If gills are present on the underside, I'm way off track, but could try to find my way back.
I’ll get some close ups when am back at that location. ThanksI do see that the tree has been repeatedly wounded over a period of years. I need a sharper look at the brown patches on the lower bole. Is that what you were referring to as fungus? This photo does tell a lot, but not enough closeup detail for me.
Just back from the Maine Mycology club lecture that I mentioned earlier in this thread. It was way fun.