clostridium chromiireducens clostridium chromiireducens clostridium chromiireducens is a gram-positive anaerobe anaerobic and spore-forming bacterium from the genus clostridium which has been isolated from wetland soil from michigan in the united states. clostridium chromiireducens scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: clostridiaceae genus: clostridium species: c. chromiireducens binomial name clostridium chromiireducensinglett et al. 2011 type strain dsm 23318, gcaf-1, kctc 5935 synonyms clostridium chromoreductans