More shelf, or bracket, fungi.

There are all these interesting words you find when looking up stuff about fungi. Like "clades" and "conks." And this: "Other examples of bracket fungi include the sulphur shelf, birch bracket, dryad's saddle, artist's conk, and turkey tail."

I like this particular specimen because it grew on a stump created by the beavers when they lived in the pond next door. See the pointy top? Beaver-gnawing did that.