Class Equisetopsida C.Agardh (1825) - horsetails see Subclass Equisetidae Warm. (1883) angiosperms - flowering plants see Subclass Magnoliidae Novák ex Takht. (1967) Subclass Magnoliidae Novák ex Takht. (1967) - angiosperms core angiosperms - mesangiosperms see [unranked] mesangiosperms Superorder Lilianae Takht. (1967) - monocots Order Petrosaviales Takht. (1997)