clostridium acidisoli clostridium acidisoli clostridium acidisoli is a nitrogen-fixing bacterium from the genus of clostridium which has been isolated from acidic peat bog soil from the fichtel mountains in germany. clostridium acidisoli scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: clostridiaceae genus: clostridium species: c. acidisoli binomial name clostridium acidisolikuhner et al. 2000 type strain atcc baa-167, ck74, dsm 12555