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Taxon: Subclass Equisetidae Warm. (1883) (plant)
 Entity: 

Concise hierarchy

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

Current position

Polypodiopsida (Class) Cronquist, Takht. & Zimmerm. (1966) Ref: PPG I, 2016: 570; PPG I, 2016: fig. 1.

Alternative positions

ferns ([unranked]) Ref: D.J. Mabberley, 2017: App. (p. 997).
monilophytes ([unranked]) Ref: M.W. Chase & J.L. Reveal, 2009: 123.
Pteropsida (Class) Ref: B. Odé et al., 2010: 74.

Historical positions

[Ferns] ([unranked]) Ref: D.J. Mabberley, 2017: App. (p. 997).
Polypodiopsida (Class) Cronquist, Takht. & Zimmerm. (1966) Ref: PPG I, 2016: 570.
Polypodiopsida (Class) Cronquist, Takht. & Zimmerm. (1966) Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 32).
Pteropsida (Class) Ref: B. Odé et al., 2010: 74.
monilophytes ([unranked]) Ref: M.W. Chase & J.L. Reveal, 2009: 123.

Number of Subtaxa

2025 Available in Systema Naturae 2000 1o;1f;1g;15s;2v; †3o;15f;39g;5s
1989-present Systema Naturae 2000: 4 Mar 2023 [1o;1f;1g;15s; †3o;15f;39g]
2017 D.J. Mabberley: 335, App. (p. 997) [1o;1f;1g;15s]
2016 PPG I: 571 [1o;1f;1g]
2015b M.A. Ruggiero et al.: table 2 (p. 32) [1o]
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Last updated: 21 Sep 2025