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)
           Subclass Lycopodiidae Bek. (1863) - clubmosses and quillworts see Class Lycopodiopsida Bartl. (1830)
             Order Lycopodiales DC. ex Bercht. & J.Presl (1820) [monotypic]
               Family Lycopodiaceae P.Beauv. ex Mirb. (1802) - clubmosses
                 1 Genus Huperzia Bernh. (1801)
                 2 Genus Lycopodiella Holub (1964)
                 3 Genus Lycopodium L. (1753)
                 4 Genus Pseudolycopodiella Holub