Anthracothecium nanum
- kingdom: Fungi
- phylum: Ascomycota
- class: Eurotiomycetes
- order: Pyrenulales
- family: Pyrenulaceae
- genus: Anthracothecium
- species: Anthracothecium nanum
Auburn
Alabama- Pinecrest
Florida- Buxton
- Pine Knoll Shores
North Carolina
United States