These little guys were found growing behind my garage in late May in Bellevue, NE. They look like baby red potatos and are about 1 1/2 to 2 inches across. Oblong. They have no stem and are connected to the mycelium via a single small white strand at the bottom. I've waited a few days to see if they turn into stemmed mushrooms, but they don't seem to be. Seems like this is it for them. Appreciate any help. Edit: they just slightly poke through the ground's surface. I was unable to get a spore print.