clostridium uliginosum clostridium uliginosum clostridium uliginosum is a mesophilic bacterium oxidizing acetate in syntrophic association with a hydrogenotrophic methanogenic bacterium. it is a spore-forming, gram-positive, rod-shaped organism, with type strain bst. its genome has been sequenced. clostridium uliginosum scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: clostridiaceae genus: clostridium species: c. uliginosum binomial name clostridium uliginosummatthies et al. 2001