brevundimonas viscosa brevundimonas viscosa brevundimonas viscosa is a gram-negative and rod-shaped bacterium from the genus of brevundimonas which has been isolated from saline soil from china. brevundimonas viscosa scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: caulobacterales family: caulobacteraceae genus: brevundimonas species: b. viscosa binomial name brevundimonas viscosawang et al. 2012 type strain cgmcc 1.10683, jcm 17426, strain f3