Concise hierarchy

(Kingdom) Plantae - (Phylum) Tracheophyta - (Class) Magnoliopsida - (Order) Nymphaeales

Subsequent positions

Angiospermae (Clade) Lindley 1830 [Cantino & Donoghue 2007], nom. cl. inval.

Ref: P.D. Cantino et al., 2007: E22.

Current position

Nymphaeales (Order) Salisb. ex Bercht. & J.Presl (1820)

Ref: D.J. Mabberley, 2017: App. (p. 999).

Alternative positions

Angiospermae (Clade) Lindley 1830 [Cantino & Donoghue 2007], nom. cl. inval.	Ref: P.D. Cantino et al., 2007: E22. [new position]
Hydatellales (Order) Cronquist (1980)	Ref: A.B. Doweld, 2001: LXII.
Poales (Order) Burnett (1835)	Ref: APG II, 2003: 417.

Historical positions

Nymphaeales (Order) Salisb. ex Bercht. & J.Presl (1820)	Ref: D.J. Mabberley, 2017: App. (p. 999).
Nymphaeales (Order) Salisb. ex Bercht. & J.Presl (1820)	Ref: APG IV, 2016: App. (p. 14).
Nymphaeales (Order) Salisb. ex Bercht. & J.Presl (1820)	Ref: APG III, 2009: 107.
Basal angiosperms ([unranked])	Ref: T.N. Taylor et al., 2009: App. 1 (p. 1029).
Nymphaeales (Order) Salisb. ex Bercht. & J.Presl (1820)	Ref: D.J. Mabberley, 2008: 418, 930.
Angiospermae (Clade) Lindley 1830 [Cantino & Donoghue 2007], nom. cl. inval.	Ref: P.D. Cantino et al., 2007: E22. [new position]
Poales (Order) Burnett (1835)	Ref: APG II, 2003: 417.
Hydatellales (Order) Cronquist (1980)	Ref: A.B. Doweld, 2001: LXII.
Poales (Order) Burnett (1835)	Ref: APG, 1998: 539.
Hydatellales (Order) Cronquist (1980)	Ref: A. Takhtajan, 1997: 547.
Hydatellales (Order) Cronquist (1980)	Ref: G. Dahlgren, 1989a,b
Hydatellales (Order) Cronquist (1980)	Ref: A. Cronquist, 1982: 475.

Number of Subtaxa

2024	Available in Systema Naturae 2000	2g
1989-present	Systema Naturae 2000	2g;10s
2010	Royal Botanic Gardens, Kew & Missouri Botanical Garden: 12 Aug 2011	1g;12s
2008	D.J. Mabberley: 418	2g;10s
1997	A. Takhtajan	2g;8s
1982	A. Cronquist	2g[5s]