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Monotypic taxon: Family Ruppiaceae Horan. (1834), nom. cons. - ditch-grass family (plant)
 Entity: 

Concise hierarchy

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

Current position

Alismatales (Order) R.Br. ex Bercht. & J.Presl (1820) Ref: D.J. Mabberley, 2017: App. (p. 1000).

Alternative positions

Najadales (Order) Bercht. & J.Presl (1820) Ref: A. Cronquist, 1982: 465.
Potamogetonales (Order) Dumort. (1829) Ref: A.B. Doweld, 2001: LIX.

Historical positions

Alismatales (Order) R.Br. ex Bercht. & J.Presl (1820) Ref: D.J. Mabberley, 2017: App. (p. 1000).
Alismatales (Order) R.Br. ex Bercht. & J.Presl (1820) Ref: APG IV, 2016: App. (p. 15).
Alismatales (Order) R.Br. ex Bercht. & J.Presl (1820) Ref: APG III, 2009: 109.
Alismatales (Order) R.Br. ex Bercht. & J.Presl (1820) Ref: D.J. Mabberley, 2008: 754, 931.
Alismatales (Order) R.Br. ex Bercht. & J.Presl (1820) Ref: APG II, 2003: 416.
Potamogetonales (Order) Dumort. (1829) Ref: A.B. Doweld, 2001: LIX.
Alismatales (Order) R.Br. ex Bercht. & J.Presl (1820) Ref: APG, 1998: 538.
Potamogetonales (Order) Dumort. (1829) Ref: A. Takhtajan, 1997: 572.
Najadales (Order) Bercht. & J.Presl (1820) Ref: A. Cronquist, 1982: 465.
Helobiae (Order) Ref: D.M. Moore, 1982: 292.
Najadales (Order) Bercht. & J.Presl (1820) Ref: L.J. Audus & V. Heywood, 1981

Number of Subtaxa

2024 Available in Systema Naturae 2000 1g;2s;1v
1989-present Systema Naturae 2000 1g;>7s
2010 Royal Botanic Gardens, Kew & Missouri Botanical Garden: 12 Aug 2011 1g;7s
2008 D.J. Mabberley: 754 1g;>7s
1997 A. Takhtajan 1g;3-7s
1982 A. Cronquist 1g1s
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Last updated: 1 Feb 2024