paramesorhizobium paramesorhizobium "paramesorhizobium" is a provisional genus of bacteria from the family phyllobacteriaceae with one known species ("paramesorhizobium deserti"). "paramesorhizobium" scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: phyllobacteriaceae genus: "paramesorhizobium"luo et al. 2015 species "p. deserti"