Cladonia rigida
- kingdom: Fungi
- phylum: Ascomycota
- class: Lecanoromycetes
- order: Lecanorales
- family: Cladoniaceae
- genus: Cladonia
- species: Cladonia rigida
Fayette
Iowa- Mankato
- Minneapolis
- Sandstone
Minnesota- Mount Horeb
- Saint Croix Falls
Wisconsin
United States