Arthonia floridana Willey
CC BY-NC 3.0 - United States National Herbarium - Smithsonian (US:Lichens) - Source: https://lichenportal.org/portal/taxa/index.php?taxon=52430
Det.: Tucker, S. C., Leg. A. B. Langlois Nr: 827 1894-4-16, USA, Louisiana, Near Covington.
