Viridiplantae Cavalier-Smith, 1981 - green plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Chlorophyta Pascher (1914) - green algae
     core chlorophytes
       Class Chlorophyceae Wille (1884) - chlorophytes
         Order Chaetopeltidales C.J. O'Kelly, S. Watanabe & G.L. Floyd (1994)
           Genus Floydiella Friedl & O'Kelly
             Floydiella terrestris (R.D. Groover & A.M. Hofsetter, 1969) Friedl & O'Kelly (2002)