Vitreoscillaceae Pringsheim 1949 (Approved Lists 1980) Vitreoscilla Pringsheim 1949 emend. Leadbetter 1974 (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 Beggiatoales Buchanan 1957 (Approved Lists 1980) Vitreoscillaceae Pringsheim 1949 (Approved Lists 1980) Beggiatoales Buchanan 1957 (Approved Lists 1980) Beggiatoaceae Migula 1894 (Approved Lists 1980) Simonsiellaceae Steed 1962 (Approved Lists 1980) Leucotrichaceae Buchanan 1957 (Approved Lists 1980) Achromatiaceae Massart 1902 (Approved Lists 1980) Vitreoscilla Pringsheim 1949 emend. Leadbetter 1974 (Approved Lists 1980) Pringsheim E.G. The relationship between bacteria and Myxophyceae 1949 13 2 47 98 Bacteriological Reviews Bacteriol Rev 0005-3678 1098-5557 16350128 Buchanan R.E. Breed R.S. Murray E.G.D. Smith N.R. Family II. Leucotrichaceae Buchanan, Fam. Nov. 1957 7 850 851 Bergey's Manual of Determinative Bacteriology The Williams and Wilkins Co. Baltimore