Chromatium

Chromatium
Scientific classification
Kingdom:	Bacteria
Phylum:	Proteobacteria
Class:	Gammaproteobacteria
Order:	Chromatiales
Family:	Chromatiaceae
Genus:	Chromatium Perty 1852
Type species
Chromatium okenii
Species
C. buderi C. glycolicum C. gracile C. minus C. minutissimum C. okenii C. purpuratum C. salexigens C. tepidum C. vinosum C. violascens C. armingii C. weisii C. gracile

Chromatium is a genus of photoautotrophic Gram-negative bacteria which are found in water. The cells are straight rod-shaped or slightly curved. They belong to the purple sulfur bacteria and oxidize sulfide to produce sulfur which is deposited in intracellular granules of the cytoplasm.