Chromatium Perty, 1852 emend. Imhoff et al., 1998 Dataset Catalogue of Life Rank GENUS Classification kingdom Bacteria phylum Proteobacteria class Gammaproteobacteria order Chromatiales family Chromatiaceae genus Chromatium Name Homonyms Chromatium Perty, 1852 emend. Imhoff et al., 1998