Acrosiphonia spinescens
- kingdom: Plantae
- phylum: Chlorophyta
- class: Ulvophyceae
- order: Ulotrichales
- family: Ulotrichaceae
- genus: Acrosiphonia
- species: Acrosiphonia spinescens
Campbell River
Sooke
Tofino
British Columbia
CanadaBilldal
Västra Götaland
SwedenSitka
Alaska
United States