methylovirgula methylovirgula methylovirgula is a gram-negative, aerobic genus of bacteria from the family of beijerinckiaceae. methylovirgula scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: beijerinckiaceae genus: methylovirgulavorob'ev et al. 2009 type species methylovirgula ligni species m. ligni