plants Haeckel (1866) - plants Division Charophyta Migula (1889) - charophyte algae and embryophytes see charophytes Subdivision [Streptophytina] see [unranked] Streptophytina Lewis & McCourt (2004) Class Equisetopsida C.Agardh (1825) - horsetails see Subclass Equisetidae Warm. (1883) Vascular Plants see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998) [Seed-Plants; Spermatophyta] Gymnosperms see Class Spermatopsida Subclass Cycadidae Pax (1894) [monotypic] - cycads Order Cycadales Pers. ex Bercht. & J.Presl (1820) - cycads Family Cycadaceae Pers. (1807), nom. cons. - Cycas family