Chromatium violascens Perty 1852 (Approved Lists 1980) Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Gammaproteobacteria order Chromatiales family Chromatiaceae genus Thiocystis species Thiocystis violascens Name Homonyms Chromatium violascens Chromatium violascens Perty 1852 (Approved Lists 1980)