Hydnochaete olivacea, synonym Hymenochaetopsis olivacea (Brown-Toothed Crust)
Photo was taken at Mile Bluff park in Mauston
Both photos (above & below) were taken at Mosquito Hill Nature Center
Both photos (above & below) were taken at Mirror Lake State Park
Both photos (above & below) were taken at Mirror Lake State Park
Photo was taken at Camp Douglas