Concise hierarchy

(Kingdom) Plantae - (Phylum) Tracheophyta - (Class) Polypodiopsida

Subsequent positions

Leptosporangiatae (Clade) Bessey 1907 [Cantino & Donoghue 2007]

Ref: P.D. Cantino et al., 2007: E16.

Current position

Polypodiidae (Subclass) Cronquist, Takht. & Zimmerm. (1966)

Ref: PPG I, 2016: 574.

Alternative positions

Leptosporangiatae (Clade) Bessey 1907 [Cantino & Donoghue 2007]	Ref: P.D. Cantino et al., 2007: E16. [new position]
Polypodinae (Class)	Ref: L.J. Audus & V. Heywood, 1981: 1246.
Polypodiopsida (Class) Cronquist, Takht. & Zimmerm. (1966)	Ref: Новіков, А. & Барабаш-Красни, Б. / Novikoff, A. & Barabasz-Krasny, B., 2015: 50.
Schizaeopsida (Class) Doweld (2001)	Ref: A.B. Doweld, 2001: X. [new position]

Historical positions

Polypodiidae (Subclass) Cronquist, Takht. & Zimmerm. (1966)	Ref: D.J. Mabberley, 2017: App. (p. 998).
Polypodiidae (Subclass) Cronquist, Takht. & Zimmerm. (1966)	Ref: PPG I, 2016: 574.
Polypodiidae (Subclass) Cronquist, Takht. & Zimmerm. (1966)	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 32).
Polypodiopsida (Class) Cronquist, Takht. & Zimmerm. (1966)	Ref: A. Novikoff & B. Barabasz-Krasny, 2015: 50.
Polypodiopsida (Class) Cronquist, Takht. & Zimmerm. (1966)	Ref: D.J. Mabberley, 2008: 928.
Leptosporangiatae (Clade) Bessey 1907 [Cantino & Donoghue 2007]	Ref: P.D. Cantino et al., 2007: E16. [new position]
Polypodiopsida (Class) Cronquist, Takht. & Zimmerm. (1966)	Ref: A.R. Smith et al., 2006: 711, fig. 2; 726.
Polypodiidae (Subclass) Cronquist, Takht. & Zimmerm. (1966)	Ref: K.M. Pryer et al., 2004: fig. 10.5B.
Schizaeopsida (Class) Doweld (2001)	Ref: A.B. Doweld, 2001: X. [new position]
Polypodinae (Class)	Ref: L.J. Audus & V. Heywood, 1981: 1246.

Number of Subtaxa

2024	Available in Systema Naturae 2000	3f;4g;3s; †4f;10g;1s
1989-present	Systema Naturae 2000: 23 Mar 2023	[3f;4g; †4f;10g]
2017	D.J. Mabberley: App. (p. 998)	[3f;4g]
2016	PPG I: 574	[3f;4g]
2015	A. Novikoff & B. Barabasz-Krasny: 50	[3f;4g; †4f;10g]
2008	D.J. Mabberley	[3f;4g]
2006	A.R. Smith et al.	[3f;4g;>155s]
2001	A.B. Doweld: X	[3f; †4f]
1981	L.J. Audus & V. Heywood	[1f;5g;170s]