janibacter massiliensis janibacter massiliensis "janibacter massiliensis" is a species of gram positive, aerobic, bacterium. the species was initially isolated from the vaginal discharge of a 45-year-old french woman with bacterial vaginosis. the species was first described in 2019, and the species name refers to massilia, the ancient name for marseille, the city from which the species was first isolated. janibacter massiliensis scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: intrasporangiaceae genus: janibacter species: j. massiliensis binomial name janibacter massiliensismaaloum et al. 2019 "j. massiliensis" can grow in the 28-37 °c temperature range, and is able to grow at ph 6.5-8.5.