listeria booriae listeria booriae listeria booriae is a gram-positive, facultatively anaerobic, nonmotile, non-spore-forming rod-shaped species of bacteria. it is not pathogenic and nonhemolytic. it was discovered in a dairy processing plant in the northeastern united states, and was first described in 2015. the species name honors "kathryn boor, a united states food scientist, for her contribution to the understanding of the biology of listeria." listeria booriae scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: listeriaceae genus: listeria species: l. booriae binomial name listeria booriaeweller et al. 2015