serrated earth moss
- kingdom: Plantae
- phylum: Bryophyta
- class: Bryopsida
- order: Funariales
- family: Ephemeraceae
- genus: Ephemerum
- species: Ephemerum serratum
Sierning
Upper Austria
Austria
Antrim
Downpatrick
Northern Ireland
United Kingdom
Petaluma
California
Amesbury
Cambridge
Somerville
Massachusetts
Camden
Wood-Lynne
New Jersey
United States
Vancouver
Olofström