A taxonomic note on the genus Lactobacillus: Description of 23 novel genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae Author Zheng, Jinshui Author Wittouck, Stijn Author Salvetti, Elisa Author Franz, Charles M. A. P. Author Harris, Hugh M. B. Author Mattarelli, Paola Author O’Toole, Paul W. Author Pot, Bruno Author Vandamme, Peter Author Walter, Jens Author Watanabe, Koichi Author Wuyts, Sander Author Felis, Giovanna E. Author Gänzle, Michael G. Author Lebeer, Sarah text International Journal of Systematic and Evolutionary Microbiology 2020 2020-04-01 70 4 2782 2858 http://dx.doi.org/10.1099/ijsem.0.004107 journal article 10.1099/ijsem.0.004107 1466-5034 Lactobacillus delbrueckii Lactobacillus delbrueckii ( Bacillus delbrücki ) (del.brueck’i.i. N.L. gen. n. delbrueckii , of Delbrück, named for M. Delbrück, a German bacteriologist). Type species of the genus Lactobacillus . Because of the high phenotypic and genotypic similarities between L. delbrueckii , L. leichmannii , L. lactis and L. bulgaricus , only L. delbrueckii is retained as a separate species. Both L. lactis and L. leichmannii are treated as L. delbrueckii subsp. lactis and L. bulgaricus as L. delbrueckii subsp. bulgaricus [ 60 ]. All strains produce D(−)- lactic acid.