phormidium allorgei phormidium allorgei phormidium allorgei is a species of cyanobacteria in the genus phormidium. phormidium allorgei scientific classification domain: bacteria phylum: cyanobacteria class: cyanophyceae order: oscillatoriales family: oscillatoriaceae genus: phormidium species: p. allorgei binomial name phormidium allorgeianagn. (frémy)