legionella lansingensis legionella lansingensis legionella lansingensis is a gram-negative, catalase- and oxidase-positive bacterium from the genus legionella with a single polar flagellum which was isolated from a patient with pneumonia through bronchoscopy. legionella lansingensis scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: legionellales family: legionellaceae genus: legionella species: l. lansingensis binomial name legionella lansingensisthacker et al. 1994 type strain 1677-mi-h, atcc 49751, ccug 31227 a, ccug 31227 b, cdc 1677-mi-h, cip 103542, dsm 19556, nctc 12830