Phormidium paulsenianum J.B.Petersen 1930 Dataset NCBI Taxonomy Classification phylum Cyanobacteriota class Cyanophyceae order Oscillatoriales family Oscillatoriaceae genus Phormidium species Phormidium paulsenianum Name Homonyms Phormidium paulsenianum Phormidium paulsenianum J.B.Petersen 1930