sphingobium francense sphingobium francense sphingobium francense is a hexachlorocyclohexane-degrading bacteria with type strain mtcc 6363t (=ccm 7288t). sphingobium francense scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: sphingomonadales family: sphingomonadaceae genus: sphingobium species: s. francensepal et al. 2005 binomial name sphingobium francense