Rhizoplaca opiniconensis
Both photos (above & below) were taken at Devil's Lake State Park
Both photos (above & below) were taken at Interstate State Park, mixed with Rhizoplaca subdiscrepans (white thallus)
Both photos (above & below) were taken at Observatory Hill State Natural Area
Both photos (above & below) were taken at Observatory Hill State Natural Area

Photo was taken at Poppy's Rock State Natural Area