Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
   Diaphoretickes Adl et al., 2012 see Superkingdom Corticata Lankester, 1878
     [crown] Clade Sar Adl et al. 2012 see Subkingdom Harosa Cavalier-Smith, 2010
       Stramenopiles Patterson, 1990 - stramenopiles see Superphylum Heterokonta Caval.-Sm. (1986)
         Diatomea Kütz. (1844)
           Bacillariophytina Medlin & Kaczmarska (2004) see Subphylum Khakista Caval.-Sm. (2000)
             Bacillariophyceae Haeckel (1878) - pennates
               Genus Asterionella Hassall (1850)