xanthomonas hyacinthi xanthomonas hyacinthi xanthomonas hyacinthi is a species of bacteria. xanthomonas hyacinthi scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: xanthomonadales family: xanthomonadaceae genus: xanthomonas species: x. hyacinthi binomial name xanthomonas hyacinthi(wakker 1883) vauterin et al. 1995