RT Journal Article SR Electronic(1) A1 WATSON, STANLEY W.YR 1971 T1 Taxonomic Considerations of the Family Nitrobacteraceae Buchanan JF International Journal of Systematic and Evolutionary Microbiology, VO 21 IS 3 SP 254 OP 270 DO https://doi.org/10.1099/00207713-21-3-254 PB Microbiology Society, SN 1466-5034, AB A revision of the family Nitrobacteraceae Buchanan is proposed. It is requested that the Judicial Commission issue an Opinion placing the generic names Nitrosocystis Winogradsky, Nitrosogloea Winogradsky, and Nitrocystis Winogradsky on the list of rejected names as nomina dubia. Organisms currently placed in these genera are to be transferred to other genera or their names are to be regarded as later, subjective synonyms of other names or as nomina dubia. Thus Nitrosocystis oceanus Watson will be transferred to Nitrosococcus as Nitrosococcus oceanus (Watson) comb. nov.; Nitrosocystis coccoides Starkey is to be regarded as a synonym of Nitrosococcus nitrosus (Migula) Buchanan, Nitrosomonas monocella Nelson, a synonym of Nitrosomonas europaea Winogradsky, Nitrosospira antaretica Winogradsky and Winogradsky, a synonym of Nitrosospira briensis Winogradsky and Winogradsky, and Nitrocystis sarcinoides Winogradsky, Nitrocystis micropunctata (Winogradsky) Winogradsky, and Nitrobacter agilis Nelson as later, subjective synonyms of Nitrobacter winogradskyi Winslow et al.; Nitrosogloea merismoides Winogradsky, Nitrosogloea membranacea Winogradsky, Nitrosogloea schizobacteroides Winogradsky, and Nitrosocystis javanensis (Winogradsky) Starkey are to be regarded as nomina dubia. The Judicial Commission is requested, therefore, to issue an Opinion placing these nomina dubia (names whose application is uncertain) on the list of rejected names. The type strain of Nitrosolobus multiformis, ATCC 25196, is described. The following strains are described and are here designated as type strains: Nitrosococcus oceanus ATCC 19707, Nitrococcus mobilis ATCC 25380, and Nitrospina gracilis ATCC 25379. The following strains are described and are here designated as neotypes: Nitrosomonas europaea ATCC 25978, Nitrosospira briensis ATCC 25961, and Nitrobacter winogradskyi ATCC 25391., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-21-3-254