NOUN
- pantropical aquatic fern
- small free-floating aquatic fern from the eastern United States to tropical America; naturalized in western and southern Europe
- aquatic fern of tropical America often used in aquariums
How To Use floating fern In A Sentence
- While some consider giant salvinia to be an attractive aquatic plant, this free-floating fern is also an obnoxious invader that's sometimes referred to as ‘the world's worst water weed.’