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