gordonia defluvii gordonia defluvii gordonia defluvii is a gram-positive and non-motile bacterium from the genus gordonia which has been isolated from activated sludge foams in australia. gordonia defluvii scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: mycobacteriales family: gordoniaceae genus: gordonia species: g. defluvii binomial name gordonia defluviisoddell et al. 2006 type strain cip 109401, dsm 44981, j4, ncimb 14149