Aglaothamnion sepositum
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Ceramiales
- family: Callithamniaceae
- genus: Aglaothamnion
- species: Aglaothamnion sepositum
Todos Santos
Baja California Sur
Mexico
Berwick-Upon-Tweed- Hugh Town
England
United Kingdom
Pacific Grove- Santa Cruz
California- Newburgh
New York- Friday Harbor
Washington
United States