[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Spirochaetes" Garrity and Holt 2001
       Class "Spirochaetes" Cavalier-Smith, 2002 see Class Spirochaetes Cavalier-Smith 2002
         Order Spirochaetales Buchanan 1917 (Approved Lists 1980)
           Family Spirochaetaceae Swellengrebel 1907 (Approved Lists 1980)
             Genus Borrelia Swellengrebel 1907 (Approved Lists 1980)
               01 Borrelia anserina (Sakharoff 1891) Bergey et al. 1925 (Approved Lists 1980)
               02 Borrelia afzelii Canica et al. 1994
               03 Borrelia baltazardii corrig. (ex Karimi et al. 1979) Karimi et al. 1983
               04 Borrelia brasiliensis Davis 1952 (Approved Lists 1980)
               05 Borrelia burgdorferi Johnson et al. 1984
               06 Borrelia caucasica (Kandelaki 1945) Davis 1957 (Approved Lists 1980)
               07 Borrelia coriaceae Johnson et al. 1987
               08 Borrelia crocidurae (Leger 1917) Davis 1957 (Approved Lists 1980)
               09 Borrelia dugesii (Mazzotti 1949) Davis 1957 (Approved Lists 1980)
               10 Borrelia duttonii (Novy and Knapp 1906) Bergey et al. 1925 (Approved Lists 1980)
               11 Borrelia garinii Baranton et al. 1992
               12 Borrelia graingeri (Heisch 1953) Davis 1957 (Approved Lists 1980)
               13 Borrelia harveyi (Garnham 1947) Davis 1948 (Approved Lists 1980)
               14 Borrelia hermsii (Davis 1942) Steinhaus 1946 (Approved Lists 1980)
               15 Borrelia hispanica (de Buen 1926) Steinhaus 1946 (Approved Lists 1980)
               16 Borrelia japonica Kawabata et al. 1994
               17 Borrelia latyschewii (Sofiev 1941) Davis 1948 (Approved Lists 1980)
               18 Borrelia lusitaniae Le Fleche et al. 1997
               19 Borrelia mazzottii Davis 1956 (Approved Lists 1980)
               20 Borrelia miyamotoi Fukunaga et al. 1995
               21 Borrelia parkeri (Davis 1942) Steinhaus 1946 (Approved Lists 1980)
               22 Borrelia persica (Dschunkowsky 1913) Steinhaus 1946 (Approved Lists 1980)
               23 Borrelia recurrentis (Lebert 1874) Bergey et al. 1925 (Approved Lists 1980)
               24 Borrelia sinica Masuzawa et al. 2001
               25 Borrelia spielmanii Richter et al. 2006
               26 Borrelia tanukii Fukunaga et al. 1997
               27 Borrelia theileri (Laveran 1903) Bergey et al. 1925 (Approved Lists 1980)
               28 Borrelia tillae Zumpt and Organ 1961 (Approved Lists 1980)
               29 Borrelia turdi corrig. Fukunaga et al. 1997
               30 Borrelia turcica Güner et al. 2004
               31 Borrelia turicatae (Brumpt 1933) Steinhaus 1946 (Approved Lists 1980)
               32 Borrelia valaisiana Wang et al. 1997
               33 Borrelia venezuelensis (Brumpt 1921) Brumpt 1922 (Approved Lists 1980)