Viridiplantae Cavalier-Smith, 1981 - green plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Streptophyta Jeffrey 1967 [Crane & Kenrick 1997], nom. cl. inval. see Infrakingdom Streptophyta Caval.-Sm. (1993)
     charophytes see Phylum Charophyta Migula (1889)
       ?Mesostigmatophyceae B.Marin & M. Melkonian (1999) - mesostigmatophytes
         Genus Mesostigma Lauterborn (1894)