roseburia inulinivorans roseburia inulinivorans roseburia inulinivorans is a bacterium first isolated from human faeces. it is anaerobic, gram-negative or gram-variable, slightly curved rod-shaped and motile. the cells range in size from 0.5-1.5 to 5.0 micrometres. a2-194(t) (=dsm 16841(t) =ncimb 14030(t)) is the type strain. roseburia inulinivorans scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: lachnospiraceae genus: roseburia species: r. inulinivorans binomial name roseburia inulinivoransduncan et al. 2006