Species of bacterium
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Clostridium argentinense is an anaerobic, motile, gram-positive bacterium. Some bacilli now identified as "Cl. argentinense" were previously classified as either "Cl. subterminale", "Cl. hastiforme", or "Cl. botulinum" toxin group G, respectively.
Like "Cl. botulinum", "Cl. argentinense" produces botulin, a neurotoxin that causes botulism in susceptible mammals. Among this proteolytic species' products are acetic acid, butyric acid, isobutyric acid, isovaleric acid, and hydrogen sulfide. "Cl. argentinense" is also asaccharolytic (i.e., unable to metabolize carbohydrates).