Irpex lacteus (Milk-White Toothed Polypore)

Photo was taken at Blackhawk Unit of the Lower Wisconsin State Riverway

See MushroomExpert for information

Photo was taken at Pike Lake, Kettle Moraine State Forest Northern Unit

Both photos (above & below) were taken in McFarland

Photo was taken at Bass Hollow State Natural Area

Photo was taken at Devil's Lake State Park

Both photos (above & below) were taken at Devil's Lake State Park