methylocella methylocella methylocella is a genus of bacteria from the family of beijerinckiaceae. methylocapsa scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: beijerinckiaceae genus: methylocelladedysh et al. 2000 type species methylocella palustris species m. palustris m. silvestris m. tundrae