Yellow-staining, remnant cortina-like structure. Don't recall if it had an odor. Probably growing under oak, but not sure.
Maybe quillwort, maybe pillwort, but it doesn't seem to have that thickened base I'm seeing in other pictures. Growing at the edge of a cow pond, roots loose in the water.
Update: thanks to Tiggrx for the ID.
I actually think this is Armillaria, despite its weird appearance, because growing right next to it was a more conventional-looking Armillaria-like cluster that Scott pointed out. I'm assuming there was some buried wood, but didn't check. Open to alternate suggestions.
I think the ID is right...
Scott pointed out this aster to me. Will have to keep an eye out for flowers later.
After spending the morning discussing things like the motivation of having a mission while naturalizing, we set out to find some Red-bellied Newts, which neither of us had seen before. And lo, there they were. Mission accomplished.
This weird fungus was growing in the middle of the trail, and I probably would have walked right by it if I was by myself. Someone else was clearly checking it out before us, because we found it cut like this.