Pterosiphonia pennata
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Ceramiales
- family: Rhodomelaceae
- genus: Pterosiphonia
- species: Pterosiphonia pennata
Port Noarlunga
South Australia
AustraliaCaniçal
Madeira
PortugalEastbourne
Rottingdean
Salcombe
EnglandPontycymer
Wales
United KingdomLa Jolla
San Pedro
Santa Barbara
Santa Monica
California
United States