chromalveolates see Supergroup Chromalveolata Adl et al., 2005
   Kingdom Chromista Caval.-Sm. (1981) - chromists
     Subkingdom Chromobiota Caval.-Sm. (1991)
       Infrakingdom Heterokonta Caval.-Sm. (1986) - heterokonts see Superphylum Heterokonta Caval.-Sm. (1986)
         Phylum Ochrophyta Caval.-Sm. (1995)
           Subphylum Phaeista Caval.-Sm. (1995)
             Infraphylum Chrysista Caval.-Sm. (1993)
               1 Class Raphidophyceae Chadef. ex P.C.Silva (1980) - raphidophytes
               2 Class Eustigmatophyceae Hibberd & Leedale (1971)
               3 Class Chrysophyceae Fritsch (1927)
               4 Class Chrysomerophyceae Caval.-Sm. (1995)
               5 Class Phaeothamniophyceae R.A. Andersen & J.C. Bailey (1998)
               6 Class Xanthophyceae P. Allorge ex Fritsch (1935) - yellow-green algae
               7 Class Phaeophyceae Hansgirg (1886) - brown algae