Herpothallon minimum
- kingdom: Fungi
- phylum: Ascomycota
- class: Arthoniomycetes
- order: Arthoniales
- family: Arthoniaceae
- genus: Herpothallon
- species: Herpothallon minimum
Calle Blancos
Guadalupe
Purral
Sabanilla
San Pedro
San José
Costa Rica