Physcia aipolia (Hoary Rosette Lichen)
Photo was taken at Lakeshore Preserve, Madison
Both photos (above & below) were taken in Madison
Photo was taken at Chiwaukee Prairie State Natural Area
Both photos (above & below) were taken at Hoyt Park, Madison

Photo was taken at Black Hawk Unit of the Lower Wisconsin State Riverway
Both photos (above & below) were taken at Toft Point State Natural Area

Photo was taken at Magnolia Bluff State Natural Area