Class Equisetopsida C.Agardh (1825) - horsetails see Subclass Equisetidae Warm. (1883) monilophytes - ferns see Clade Monilophyta Cantino & Donoghue 2007 [Doyle, Cantino & Donoghue 2020] Subclass Polypodiidae Cronquist, Takht. & Zimmerm. (1966)