Group Listing Aerobes: GNC Aerobes: GNR - Enterobacteriaceae Aerobes: GNR - Haemophilus, HACEK and others Aerobes: GNR - Nonfermenters Aerobes: GPC Aerobes: GPR Anaerobes: GNC Anaerobes: GNR Anaerobes: GPC Anaerobes: GPR Actinomyces israelii Actinomyces odontolyticus Eggerthella lenta Propionibacterium acnes Microscopic morphology 1000x Gram stain, plate Colonial morphology An BA | Macro BRU | Macro Anaerobes: GPR, Spore-forming Mycobacteria