Serpens Hespell 1977 (Approved Lists 1980) Serpens Hespell 1977 (Approved Lists 1980) Serpens flexibilis Hespell 1977 (Approved Lists 1980) 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 Gammaproteobacteria Garrity et al. 2005 emend. Williams and Kelly 2013 Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980) emend. Liao et al. 2020 Pseudomonadaceae Winslow et al. 1917 (Approved Lists 1980) Serpens Hespell 1977 (Approved Lists 1980) Pseudomonadaceae Winslow et al. 1917 (Approved Lists 1980) Rugamonas Austin and Moss 1987 emend. Jeon et al. 2021 Chryseomonas Holmes et al. 1986 emend. Holmes et al. 1987 Flavimonas Holmes et al. 1987 Rhizobacter Goto and Kuwata 1988 emend. Imai et al. 2013 Pseudomonas Migula 1894 (Approved Lists 1980) emend. Yang et al. 2013 Permianibacter Wang et al. 2014 Oblitimonas Drobish et al. 2016 Thiopseudomonas Tan et al. 2015 emend. Rudra and Gupta 2021 Azotobacter Beijerinck 1901 emend. Johnstone 1974 (Approved Lists 1980) Azomonas Winogradsky 1938 emend. Johnstone 1974 (Approved Lists 1980) Azorhizophilus Thompson and Skerman 1981 Azomonotrichon Thompson and Skerman 1981 Phytomonas Bergey et al. 1923 Xanthomonas (Bergey et al. 1923) Dowson 1939 (Approved Lists 1980) emend. Vauterin et al. 1995 Entomomonas Wang et al. 2020 Parapseudomonas Saati-Santamaría et al. 2021 Denitrificimonas Saati-Santamaría et al. 2021 Halopseudomonas Rudra and Gupta 2021 Atopomonas Rudra and Gupta 2021 Neopseudomonas Saati-Santamaría et al. 2021 pro synon. Halopseudomonas Rudra and Gupta 2021 Stutzerimonas Lalucat et al. 2022 Serpens flexibilis Hespell 1977 (Approved Lists 1980) Hespell R.B. Serpens flexibilis gen. nov., sp. nov., an unusually flexible lactate-oxidizing bacterium. 1977 27 4 371 381 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-27-4-371 Shin S.K. Hwang C.Y. Cho Y.J. Yi H. Reclassification of Serpens flexibilis Hespell 1977 as Pseudomonas flexibilis comb. nov., with Pseudomonas tuomuerensis Xin et al. 2009 as a later heterotypic synonym 2015 38 8 563 566 Systematic and Applied Microbiology Syst Appl Microbiol 0723-2020 10.1016/j.syapm.2015.09.007 26516088 Pseudomonas Migula 1894 (Approved Lists 1980) emend. Yang et al. 2013 Hespell R.B. Serpens flexibilis gen. nov., sp. nov., an unusually flexible lactate-oxidizing bacterium. 1977 27 4 371 381 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-27-4-371 Shin S.K. Hwang C.Y. Cho Y.J. Yi H. Reclassification of Serpens flexibilis Hespell 1977 as Pseudomonas flexibilis comb. nov., with Pseudomonas tuomuerensis Xin et al. 2009 as a later heterotypic synonym 2015 38 8 563 566 Systematic and Applied Microbiology Syst Appl Microbiol 0723-2020 10.1016/j.syapm.2015.09.007 26516088 Skerman V.B.D. McGowan V. Sneath P.H.A. Approved Lists of Bacterial Names 1980 30 1 225 420 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-30-1-225