phenylobacterium falsum phenylobacterium falsum phenylobacterium falsum is a gram negative, strictly aerobic and rod-shaped bacterium from the genus of phenylobacterium which has been isolated from alkaline groundwater from cabeço de vide in portugal. phenylobacterium falsum scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: caulobacterales family: caulobacteraceae genus: phenylobacterium species: p. falsum binomial name phenylobacterium falsumtiago et al. 2005 type strain ac-49, cip 108469, dsm 18556, lmg 22693