Sitka club-moss
- kingdom: Plantae
- phylum: Tracheophyta
- class: Lycopodiopsida
- order: Lycopodiales
- family: Lycopodiaceae
- genus: Diphasiastrum
- species: Diphasiastrum sitchense
West Vancouver
British ColumbiaWolfville
Nova ScotiaChapais
Fermont
Havre-Saint-Pierre
Shannon
Quebec
CanadaSaint-Pierre
Saint-Pierre
Saint Pierre And MiquelonHood River
OregonChehalis
Snoqualmie
Washington
United States