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 Pernambuco, Ceará, Bahia, United Kingdom, United States, Amazônia, Alaska, SãO Paulo, U.S. Virgin Islands, Mata Atlântica, Rio Grande Do Norte, Canada, Eastern North America, Puerto Rico, Pantanal, Rio De Janeiro, The Contiguous United States, Mato Grosso, Paraná, Rio Grande Do Sul, Santa Catarina, North America, and Mato Grosso Do Sul. They have simple, broad leaves and blue flowers. Individuals can grow to 0.64 m.
EOL has data for 78 attributes, including: