Class Dinophyceae Pascher (1914)
   Order Peridiniales Haeckel (1894)
     Family Gonyaulacaceae Er. Lindem. (1928)
       Genus Alexandrium Halim (1960)
         01 Alexandrium andersonii Balech
         02 Alexandrium balechii (Steidinger) Balech
         03 Alexandrium catenella (Whedon & Kofoid) Balech
         04 Alexandrium compressum (Fukuyo, Yoshida & Inoue) Balech
         05 Alexandrium concavum (Gaarder) Balech
         06 Alexandrium foedum Balech
         07 Alexandrium insuetum Balech
         08 Alexandrium kutnerae (Balech) Balech
         09 Alexandrium leei Balech (1985)
         10 Alexandrium margalefii Balech
         11 Alexandrium minutum Halim
         12 Alexandrium ostenfeldii (Paulsen) Balech & Tangen
         13 Alexandrium pseudogonyaulax (Biecheler) Kita & Fukuyo
         14 Alexandrium tamarense (Lebour) Balech (1995)
         15 Alexandrium taylorii Balech