legionella gormanii legionella gormanii legionella gormanii is a gram-negative bacterium from the genus legionella which was isolated from soil samples from a creek bank in atlanta and from the bronchial brush specimen of a patient who suffered from pneumonia. l. gormanii can cause atypical pneumonia together with l. pneumophila. legionella gormanii scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: legionellales family: legionellaceae genus: legionella species: l. gormanii binomial name legionella gormaniimorris et al. 1980 type strain allo3, atcc 33297, atcc 33342, ccug 12267, cip 104724, dsm 16641, ls-13 (allo3), ls12.9, nctc 11401 synonyms fluoribacter gormanii