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 10114954 DESCRIPTION OF LAPIDILACTOBACILLUS GEN. NOV. Lapidilactobacillus [La.pi.di.lac.to.ba.cil’lus L. masc. n. lapis , stone, referring to the isolation source of the type species Lapidilactobacillus concavus ; N.L. masc. n. Lactobacillus a bacterial genus; N.L. masc. n. Lapidilactobacillus , a lactobacillus isolated from stone (walls)]. The cells are Gram-positive rods or cocci, homofermentative, non motile, non-spore-forming, facultatively anaerobes, and catalase-negative. Pentose utilization and the pH range for growth are strain dependent, the optimum pH is between 6.0 and 7.0. They are homofermentative and mainly produce L-lactic acid. The optimum temperature for growth is 30–37 °C. No ammonia is produced from arginine. The mol% G+C content of DNA is between 38.1 and 49.0. A phylogenetic tree on the basis of 16S rRNA genes of all species in the genus Lapidiactobacillus is provided in Fig. S6D . The type species is Lapidilactobacillus concavus comb. nov. ; Lapidilactobacillus was previously referred to as L. concavus / dextrinicus group.