Viridiplantae Cavalier-Smith, 1981 - green plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
Count: 1p;12c;22o;4f;148g;20s
   Streptophyta Jeffrey 1967 [Crane & Kenrick 1997], nom. cl. inval. see Infrakingdom Streptophyta Caval.-Sm. (1993)
  Count: 6c;1o;23g;2s
     charophytes see Phylum Charophyta Migula (1889)
    Count: [c] 6c;1o;23g;2s
       Class Zygnematophyceae C.Hoek, D.G.Mann & H.M. Jahns (1995), nom. inval. - conjugating green algae see Class Zygnematophyceae Round ex Guiry (2013)
      Count: 1o;13g
         Genus Roya West & G.S.West (1896)
        Count: -