"Bacterium acidi propionici d" Sherman 1921 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