Bleeds a yellow sap that dries brown. Came up under a crabapple. Tight rosette with secondary rosettes off to to the side. Odd smell like a light chemical salmon egg powerbait. Appears to be a brassica of some kind .
I am very curious as to what made this indentation in the tree. It looks like an very large deer hoof. It is probably the same width as my hand, but a bit taller.