Or maybe dog vomit slime mold
Or maybe dog vomit slime mold
Found inside of a Scleroderma polyrhizum, among the spores: https://www.inaturalist.org/observations/111441707
Woodley Gardens Park, Rockville.
These are not so fresh, but still a little pliable. Largest is about 8-1/2 inches in diameter.
Or this could be golden ear.