Arthonia eckfeldtii Müll. Arg.


CC BY-NC 3.0 - United States National Herbarium - Smithsonian (US:Lichens) - Source: https://lichenportal.org/portal/taxa/index.php?taxon=52421
Leg. A. B. Langlois Nr: 778, 1894-1-13 USA, Louisiana, Duchamps.