Postelsia palmaeformis
- kingdom: Chromista
- phylum: Ochrophyta
- class: Phaeophyceae
- order: Laminariales
- family: Laminariaceae
- genus: Postelsia
- species: Postelsia palmaeformis
- Vancouver
British Columbia
Canada- Carmel-by-the-Sea
- Monterey
- Pacific Grove
- Santa Cruz
California
United States