Azotobacter chroococcum Beijerinck, 1901 Dataset TAXREF Rank SPECIES Classification kingdom Bacteria phylum Proteobacteria class Gammaproteobacteria order Pseudomonadales family Pseudomonadaceae genus Azotobacter species Azotobacter chroococcum Name Homonyms Azotobacter chroococcum Beijerinck, 1901