ileibacterium valens ileibacterium valens ileibacterium valens is a gram-positive bacterium from the genus of ileibacterium which has been isolated from the intestine of a murine from new york city in the united states. ileibacterium valensi scientific classification domain: bacteria phylum: bacillota class: erysipelotrichia order: erysipelotrichales family: erysipelotrichaceae genus: ileibacterium species: i. valens binomial name ileibacterium valenscox et al. 2017 type strain atcc tsd-63, dsm 103668, nyu-bl-a3 synonyms ileibacterium lipovorans