[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Actinobacteria" Garrity and Holt 2001
       Class "Actinobacteria" Stackebrandt et al. 1997
         Subclass Actinobacteridae Stackebrandt et al. 1997 see Class Actinobacteria Stackebrandt et al. 1997
           Order Actinomycetales Buchanan 1917 (Approved Lists 1980)
             Suborder Propionibacterineae Rainey et al. 1997
               Family Propionibacteriaceae Delwiche 1957 (Approved Lists 1980)
                 Genus Propionibacterium Orla-Jensen 1909 (Approved Lists 1980)
                   01 [Propionibacterium freudenreichii] van Niel 1928 (Approved Lists 1980)
                   02 Propionibacterium acidipropionici corrig. Orla-Jensen 1909 (Approved Lists 1980)
                   03 Propionibacterium acnes (sic) (Gilchrist 1900) Douglas and Gunter 1946 (Approved Lists 1980)
                   04 Propionibacterium australiense Bernard et al. 2002
                   05 Propionibacterium avidum (Eggerth 1935) Moore and Holdeman 1969 (Approved Lists 1980)
                   06 Propionibacterium cyclohexanicum Kusano et al. 1997
                   07 Propionibacterium granulosum (Prévot 1938) Moore and Holdeman 1970 (Approved Lists 1980)
                   08 Propionibacterium jensenii van Niel 1928 (Approved Lists 1980)
                   09 Propionibacterium microaerophilum Koussémon et al. 2001
                   10 Propionibacterium propionicum corrig. (Buchanan and Pine 1962) Charfreitag et al. 1988
                   11 Propionibacterium thoenii van Niel 1928 (Approved Lists 1980)