hungatella effluvii hungatella effluvii hungatella effluvii is a gram-positive, anaerobic and spore-forming bacterium from the genus of hungatella. hungatella effluvii scientific classification domain: bacteria phylum: bacillota class: clostridia family: clostridiaceae genus: hungatella species: h. effluvii binomial name hungatella effluviikaur et al. 2014 type strain ub-b.2