Because these data were from draft genome assemblies, we could not identify plasmid contigs with certainty. We looked for nine previously identified Legionella species plasmids available in GenBank (accessed 12/29/2016) in our genomes. L. dumoffii (Clade 3) and L. jamestowniensis (Clade 2), carry the Lp Lorraine plasmid pLELO (GI Accession: NC_018141) with 100% identity. Similarly, Lp13 and Lp5 had the Lp Lens plasmid pLPL. We also found partial matches to several other Legionella plasmids in 25 genomes (BLASTN identity >95%), suggesting that other strains contain plasmid genes.