methylocystis rosea methylocystis rosea methylocystis rosea is a methanotrophic, gram-negative, rod-shaped, non-spore-forming and non-motile bacterium species from the genus of methylocystis which has been isolated from arctic wetland soil on the svalbard islands in norway. methylocystis bryophila scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: methylocystaceae genus: methylocystis species: m. bryophila binomial name methylocystis bryophilawartiainen et al. 2006 type strain atcc baa-1196, dsm 17261, hoefman r-43160, lmg 27835, sv97 synonyms methylocystis rhodochrous