Anthracothecium exsertum (Kremp.) Müll. Arg.
CC BY-NC 3.0 - United States National Herbarium - Smithsonian (US:Lichens) - Source: https://lichenportal.org/portal/taxa/index.php?taxon=130468
Leg. F. R. Fosberg Nr. 25305 1946-7-1 Mariana Islands, Guam, Ritidian Point.
