floating-fern
Nouns
- (n) pantropical aquatic fern Ceratopteris thalictroides,
- (n) aquatic fern of tropical America often used in aquariums Ceratopteris pteridioides, water sprite,
- (n) small free-floating aquatic fern from the eastern United States to tropical America; naturalized in western and southern Europe Azolla caroliniana, Carolina pond fern, mosquito fern,