are clostridium genus spore formers
Clostridium. a genus of gram-positive, obligate anaerobic or microaerophilic, spore-forming, rod-shaped bacteria. Several species cause gas gangrene, including C. bifermenÂ´tans, C. histiolyÂ´ticum, C. noÂ´vyi, C. perfrinÂ´gens (the most common cause), and C. sepÂ´ticum.