Methylocystis echinoides (ex Gal'chenko et al. 1977) Bowman et al. 1993 Methylocystis echinoides (ex Gal'chenko et al. 1977) Bowman et al. 1993 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Proteobacteria (sic) Garrity et al. 2021 Pseudomonadota corrig. Garrity et al. 2021 Alphaproteobacteriota (sic) Garrity et al. 2021 Alphaproteobacteria Garrity et al. 2006 Hyphomicrobiales Douglas 1957 (Approved Lists 1980) emend. Hördt et al. 2020 Methylocystaceae Bowman 2006 emend. Hördt et al. 2020 Methylocystis (ex Whittenbury et al. 1970) Bowman et al. 1993 emend. Belova et al. 2013 Methylocystis echinoides (ex Gal'chenko et al. 1977) Bowman et al. 1993 Methylocystis (ex Whittenbury et al. 1970) Bowman et al. 1993 emend. Belova et al. 2013 Methylocystis parvus (ex Wittenbury et al. 1970) Bowman et al. 1993 emend. Hördt et al. 2020 Methylocystis hirsuta Lindner et al. 2007 Methylocystis sp. None 2015 Methylocystis rosea Wartiainen et al. 2006 Methylocystis bryophila Belova et al. 2013 Methylocystis heyeri Dedysh et al. 2007 Methylocystis silviterrae Tikhonova et al. 2021 Methylocystis echinoides (ex Gal'chenko et al. 1977) Bowman et al. 1993 Bowman J.P. Sly L.I. Nichols P.D. Hayward A.C. Revised taxonomy of the methanotrophs: Description of Methylobacter gen.nov., emendation of Methylococcus, validation of Methylosinus and Methylocystis species, and a proposal that the family Methylococcaceae includes only the Group I Methanotrophs. 1993 43 4 735 753 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-43-4-735 Bowman J.P. Sly L.I. Nichols P.D. Hayward A.C. Revised taxonomy of the methanotrophs: Description of Methylobacter gen.nov., emendation of Methylococcus, validation of Methylosinus and Methylocystis species, and a proposal that the family Methylococcaceae includes only the Group I Methanotrophs. 1993 43 4 735 753 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-43-4-735 Bowman J.P. Sly L.I. Nichols P.D. Hayward A.C. Revised taxonomy of the methanotrophs: Description of Methylobacter gen.nov., emendation of Methylococcus, validation of Methylosinus and Methylocystis species, and a proposal that the family Methylococcaceae includes only the Group I Methanotrophs. 1993 43 4 735 753 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-43-4-735 Gal'chenko V.F. Shishkina V.N. Suzina N.E. Trotsenko Y.A. Isolation and properties of new strains of obligate methanotrophs 1977 46 723 728 Mikrobiologiya (Russian) 0026-3656