1. Plantae
  2. Tracheophyta
  3. Magnoliopsida
  4. Ceratophyllales
  5. Ceratophyllaceae

Ceratophyllum

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Ceratophyllanae
order      Ceratophyllales
family       Ceratophyllaceae