Rickettsia rickettsii (Wolbach 1919) Brumpt 1922 (Approved Lists 1980) Skerman V.B.D. McGowan V. Sneath P.H.A. Approved Lists of Bacterial Names 1980 30 1 225 420 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-30-1-225 Roux V Raoult D. Phylogenetic analysis of the genus Rickettsia by 16S rDNA sequencing 1995 146 385 396 Research in Microbiology Res Microbiol 0923-2508 8525055 A search for 16S L36217 in GenBank yields results Rickettsia rickettsii for strain "R" Currently unable to verify that strain R equals strain ATCC VR-149 but that seems to be the case.