Xanthomonas Dowson, 1939 Dataset World Register of Marine Species Rank GENUS Classification kingdom Bacteria phylum Proteobacteria class Gammaproteobacteria order Xanthomonadales family Xanthomonadaceae genus Xanthomonas Name Homonyms Xanthomonas Scagel & J.Stein, 1961 Xanthomonas Dowson, 1939