Leptogium californicum
- kingdom: Fungi
- phylum: Ascomycota
- class: Lecanoromycetes
- order: Peltigerales
- family: Collemataceae
- genus: Leptogium
- species: Leptogium californicum
East Foothills- Sonoma
- West Menlo Park
California- Bellingham
- Goldendale
Washington
United States