Ceratophyllum demersum (Coontail) is a species of perennial herb in the family Ceratophyllaceae. They have a self-supporting growth form. They are associated with freshwater habitat. They are native to Alaska, United Kingdom, AmazôNia, United States, U.S. Virgin Islands, Pantanal, Rio Grande Do Norte, Santa Catarina, Puerto Rico, Bahia, SãO Paulo, Mato Grosso, Mato Grosso Do Sul, Eastern North America, Canada, Rio Grande Do Sul, Paraná, Rio De Janeiro, North America, Ceará, Pernambuco, The Contiguous United States, and Mata Atlântica. They have simple, broad leaves and blue flowers. Individuals can grow to 0.64 m.
EOL has data for 76 attributes, including: