Arthonia efflorescens Räsänen
CC BY-NC 3.0 - United States National Herbarium - Smithsonian (US:Lichens) - Source: https://lichenportal.org/portal/taxa/index.php?taxon=130888
Leg. V. Rasanen Nr: 534 1938-3-10 Finland, Karelia Ladogensis, Kurkijoki, Rahola, Paratsu.
