Number of the records: 1
Chromatium
Subject h. Chromatium Subject h. Chromatium Scope note in English A genus of gram-negative, ovoid to rod-shaped bacteria that is phototrophic. All species use ammonia as a nitrogen source. Some strains are found only in sulfide-containing freshwater habitats exposed to light while others may occur in marine, estuarine, and freshwater environments. 
subject heading
Number of the records: 1