| Morphology | Proprionibacterium |
| CELLULAR |
| Staining | Gram positive |
| Morphology | pleomorphic rods but cells may be coccoid, bifid or even branched and may form "chinese characters |
| Motility | Nonmotile |
| Specialized structures | Nonsporing |
| Division |
| COLONIAL |
| Solid surface |
| Liquid |
| Growth Parameters | Proprionibacterium |
| PHYSIOLOGICAL |
| Tropism | Chemoorganotrophs |
| Oxygen | are anaerobic to aerotolerant |
| pH | |
| Temperature | |
| Requirements | |
| Products | fermentation products include large amounts of propionic and acetic acids |
| Enzymes | generally catalase positive |
| Unique features |
| ENVIRONMENTAL |
| Habitat | |
| Lifestyle | |
| Pathogenicity |
| Distribution |
| Genome | Proprionibacterium |
| G+C Mol % |
| Reference | Proprionibacterium |
| First citation | Orla-Jensen,O. 1909. Die Hauptlinien des naturlichen Bakterien-systems. Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. 2, 22:305-346 |
| The Prokaryotes | P |
| Bergey's Systematatic | p 1346 C. S. Cummins and J. L. Johnson |
| Bergey's Determinative | p 580 |
| References |