hyphomicrobium aestuarii hyphomicrobium aestuarii hyphomicrobium aestuarii is a gram-negative bacteria from the genus of hyphomicrobium. hyphomicrobium aestuarii scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: hyphomicrobiaceae genus: hyphomicrobium species: h. aestuarii binomial name hyphomicrobium aestuariihirsch 1989 type strain atcc 27483, ifam nq-521 gr, ifam nq-521gr, kctc 12269, ncimb 11052, nq-521 gr, nq-521-gr