Gardner's ptychomitrium moss
- kingdom: Plantae
- phylum: Bryophyta
- class: Bryopsida
- order: Grimmiales
- family: Ptychomitriaceae
- genus: Ptychomitrium
- species: Ptychomitrium gardneri
Duncan- North Saanich
British Columbia
Canada
Sacramento
California- Orofino
Idaho- Hood River
- Oakridge
- Oregon City
- West Linn
Oregon- Cathlamet
- White Salmon
Washington
United States