the root (no rank)
Bacteria (domain)
Actinobacteria (phylum)
Actinobacteridae (subclass)
Actinomycetales (order)
Propionibacterineae (suborder)
Propionibacteriaceae (family)
Propionibacterium (genus)
[hide inferior taxa]
Propionibacterium acnes (species)
Propionibacterium freudenreichii (species)
Propionibacterium jensenii (species)
Propionibacterium thoenii (species)