Phormidium crosbyanum
- kingdom: Bacteria
- phylum: Cyanobacteria
- class: Cyanophyceae
- order: Nostocales
- family: Oscillatoriaceae
- genus: Phormidium
- species: Phormidium crosbyanum
Port Antonio
Portland
Jamaica
He‘eia- Mākaha
- Mākaha Valley
Hawaii
United States