pseudomonas orientalis pseudomonas orientalis pseudomonas orientalis is a gram-negative, rod-shaped bacterium isolated from spring waters in lebanon. based on 16s rrna analysis, p. orientalis has been placed in the p. fluorescens group. pseudomonas orientalis scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pseudomonadales family: pseudomonadaceae genus: pseudomonas species: p. orientalis binomial name pseudomonas orientalisdabboussi, et al., 1999 type strain cfml 96-170 cip 105540