This mushroom was growing on a dead tree in my daughter’s yard. The scientific name is Sarcodontia crocea. Sarco means “flesh.” dontia means “teeth.” crocea means “yellow.”
Mushrooms fascinate me. I found these odd fellows growing in my flower beds. These are called stinkworts, and they do stink. When I dig in the wood mulch, I find white strings which are fungus mycelia. There is a more technical discussion of “fun guys” in garden mulch here.