Taxonomic Note: A Pragmatic Approach to the Nomenclature of Phenotypically Similar Genomic Groups URSING, J. B. and ROSSELLÓ-MORA, R. A. and GARCÍA-VALDÉS, E. and LALUCAT, J.,, 45, 604-604 (1995), doi = https://doi.org/10.1099/00207713-45-3-604, publicationName = Microbiology Society, issn = 1466-5026, abstract= Occasionally, genomic groups (DNA groups, genomic species) that have been delimited by DNA-DNA pairing may be phenotypically so similar that they cannot be differentiated for the time being. In these situations it seems best to allow a nomenspecies to contain more than one genomic group and to refer to genomic groups of a nomenspecies as genomovars., language=, type=