Concise hierarchy

(Kingdom) Pseudomonadati - (Phylum) Spirochaetota - (Class) Spirochaetia - (Order) Leptospirales - (Family) Leptospiraceae

Current position

Leptospiraceae (Family) Hovind-Hougen 1979 (Approved Lists 1980)

Ref: G.M. Garrity et al., 2007: 549; LPSN[15 May 2026].

Alternative positions

Leptospirae (Subphylum) T. Cavalier-Smith 1998	Ref: T. Cavalier-Smith, 1998: 218. [rough position]
Leptospires ([unranked])	Ref: L. Margulis & K.V. Schwartz, 1998: 74.
Spirochaetaceae (Family) Swellengrebel 1907 (Approved Lists 1980)	Ref: E. Canale-Parola, 1982: 30.

Historical positions

Leptospiraceae (Family) Hovind-Hougen 1979 (Approved Lists 1980)	Ref: J.P. Euzéby, 2016: [13 Sep 2017]. [available name]
Leptospiraceae (Family) Hovind-Hougen 1979 (Approved Lists 1980)	Ref: G.M. Garrity et al., 2007: 549.
Leptospiraceae (Family) Hovind-Hougen 1979 (Approved Lists 1980)	Ref: G.M. Garrity et al., 2001b: 24.
Leptospiraceae (Family) Hovind-Hougen 1979 (Approved Lists 1980)	Ref: G.M. Garrity & J.G. Holt, 2001a: 165.
Leptospires ([unranked])	Ref: L. Margulis & K.V. Schwartz, 1998: 74.
Leptospirae (Subphylum) T. Cavalier-Smith 1998	Ref: T. Cavalier-Smith, 1998: table 2 (p. 218). [rough position]
Spirochaetae (Phylum) (Ehrenberg 1855) Cavalier-Smith 1998	Ref: L. Margulis & K.V. Schwartz, 1982: 34. [rough position]
Spirochaetaceae (Family) Swellengrebel 1907 (Approved Lists 1980)	Ref: E. Canale-Parola, 1982: 30.

Number of Subtaxa

2026	Available in Systema Naturae 2000	20s
1989-present	Systema Naturae 2000: 1 Jan 2015	[20s]
2007	G.M. Garrity et al.	[13s]