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 Chaetophorales Wille
           Genus Stigeoclonium Kützing (1843), nom. cons., orth. cons.
             1 Stigeoclonium helveticum Vischer