Strain NCDO 1859 (= IFO 3884) was selected as the neotype strain of by Garvie in 1974 and was confirmed as such on the Approved Lists in 1980. and are difficult to separate by using only phenotypic data, and the choice of NCDO 1859 relied on such data. Subsequently, two independent deoxyribonucleic acid (DNA)-DNA homology studies have shown that the DNA of NCDO 1859 has high levels of homology with the DNAs of strains of , including the type strain (93 to 100%), but low levels of homology (20 to 34%) with authentic strains of Moreover, the guanine-plus-cytosine content of the DNA of NCDO 1859 is within the range of guanine-pluscytosine contents, which are 4 to 5 mol% below the guanine-plus-cytosine contents of strains of Clearly, at some point, NCDO 1859 was misidentified by using only phenotypic data and should be rejected as the neotype strain of In addition, I propose that should be conserved, with DSM 20284 as the neotype strain. This action is not in line with strict application of the International Code of Nomenclature of Bacteria but will ensure the continuity of nomenclature and avoid the confusion which would result from the alterations necessary if the code were followed in this instance.


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