Biota (Life)
Prokaryotes (Prokaryota)
Bacteria (Bacterium)
Posibacteria
Firmicutes (Gram-positive bacteria)
Clostridia
Clostridiales
Clostridiaceae
Clostridium
Clostridium botulinum (Bacillus botulinus)
Clostridium botulinum a
Clostridium botulinum a str. atcc 19397 (21398821)