pseudomonas asplenii pseudomonas asplenii pseudomonas asplenii is a gram-negative soil bacterium that causes bacterial leaf blight of the bird's-nest fern (asplenium nidus), from which it derives its name. pseudomonas asplenii scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pseudomonadales family: pseudomonadaceae genus: pseudomonas species: p. asplenii binomial name pseudomonas asplenii(ark and tompkins 1946) săvulescu 1947 type strain atcc 23835 ccug 32773 cfbp 3279 cip 106710 dsm 17133 icmp 3944 lmg 2137 ncppb 1947 synonyms phytomonas asplenii ark and tompkins 1946