Concise hierarchy

(Kingdom) Plantae - (Phylum) Charophyta - (Class) Conjugatophyceae

Phylogeny

Paraphyletic/Ancestral (para)

Ref: J.D. Hall & R.M. McCourt, 2015: table 1 (p. 430).

Current position

Conjugatophyceae (Class) Engl. (1892)

Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 29).

Alternative positions

Charophyceae (Class) Rabenh. (1863)	Ref: T.N. Taylor et al., 2009: App. 1 (p. 1027).
Charophyta ([unranked]) Karol et al. (2001)	Ref: C.F. Delwiche et al., 2004: fig. 9.2d.
Chlorophyceae (Class) Wille (1884)	Ref: P.C. Silva, 1982: 157.
Conjugaphida (Class)
Conjugophyceae (Class) auct.	Ref: T. Cavalier-Smith, 1998: 250.
Streptophyta (Clade) Jeffrey 1967 [Crane & Kenrick 1997], nom. cl. inval.	Ref: J. Simons & E.J. van Nieukerken, 2010: 65.
streptophytes ([unranked])	Ref: M.J. Donoghue, 2004: fig. 33.1. [inferred rank]
Zygnematophyceae (Class) C.Hoek, D.G.Mann & H.M. Jahns (1995), nom. inval.	Ref: J.D. Hall & R.M. McCourt, 2015: table 1 (p. 430).
Zygnemophyceae (Class)	Ref: L.A. Lewis & R.M. McCourt, 2004: 1541.

Historical positions

Conjugatophyceae (Class) Engl. (1892)	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 29).
Zygnematophyceae (Class) C.Hoek, D.G.Mann & H.M. Jahns (1995), nom. inval.	Ref: J.D. Hall & R.M. McCourt, 2015: 440, table 1 (p. 430).
Conjugatophyceae (Class) Engl. (1892)	Ref: M.D. Guiry, 2013: table 1 (p. 2).
Streptophyta (Clade) Jeffrey 1967 [Crane & Kenrick 1997], nom. cl. inval.	Ref: J. Simons & E.J. van Nieukerken, 2010: 65.
Charophyceae (Class) Rabenh. (1863)	Ref: T.N. Taylor et al., 2009: table (p. 125), App. 1 (p. 1027).
streptophytes ([unranked])	Ref: M.J. Donoghue, 2004: fig. 33.1.
Zygnemophyceae (Class)	Ref: L.A. Lewis & R.M. McCourt, 2004: 1541.
Charophyta ([unranked]) Karol et al. (2001)	Ref: C.F. Delwiche et al., 2004: 131, fig. 9.2d.
Conjugophyceae (Class) auct.	Ref: T. Cavalier-Smith, 1998: table 6 (p. 250).
Chlorophyceae (Class) Wille (1884)	Ref: P.C. Silva, 1982: 157.

Number of Subtaxa

2024	Available in Systema Naturae 2000	2f;27g;126s
1989-present	Systema Naturae 2000: 3 Feb 2020	[2f;27g]
2013	M.D. Guiry: table 1 (p. 2)	[2f;26g]
1997	TAMU	18g
1982	S.P. Parker	[4f;52g;>4765s]
1982	S.P. Parker	[4f;52g;>4765s]
1982	P.C. Silva	2so[4f52g>4,765s]