roseiflexus roseiflexus roseiflexus is a genus of bacteria in the family roseiflexaceae with one known species (roseiflexus castenholzii). roseiflexus scientific classification domain: bacteria phylum: chloroflexota class: chloroflexia order: chloroflexales family: roseiflexaceae genus: roseiflexushanada et al. 2002 species r. castenholzii