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Small to medium sized flat colonies with a raised yellow-grey centre and a flattened periphery ("Medusa head" colony). The colonies are opaque with a matt surface and are adherent to the agar.
Clostridium sporogenes is proteolytic and associated with a foul odour.
This culture has been incubated anaerobically. |
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The same Blood Agar plate examined with transmitted light. The colonies are surrounded by a beta-haemolytic zone.
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| General characteristics: Gram-positive, large, spore-forming rods. Catalase-negative. Obligately anaerobic. Motile. |
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