Bacterium acidi propionici a Dataset NCBI Taxonomy Classification phylum Actinomycetota class Actinomycetes order Propionibacteriales family Propionibacteriaceae genus Propionibacterium species Propionibacterium freudenreichii Name Homonyms "Bacterium acidi propionici b" von Freudenreich and Orla-Jensen 1907 Bacterium acidi propionici b Bacterium acidi propionici d "Bacterium acidi propionici d" Sherman 1921 "Bacterium acidi propionici a" von Freudenreich and Orla-Jensen 1907 Bacterium acidi propionici a