Flora Europaea Haeckel (1866) - plants
   Spermatophyta Goebel (1882) see Phylum Spermatophyta Goebel (1882)
     Angiospermae J. Lindley (1830) see Infraphylum Angiospermae auct.
       Helobiae
         Family Ruppiaceae Horan. (1834), nom. cons. - ditch-grass family