floating fern

美 [ˈfloʊtɪŋ fɜːrn]英 [ˈfləʊtɪŋ fɜːn]
  • 网络满江红;水蕨
floating fernfloating fern

noun

1
small free-floating aquatic fern from the eastern United States to tropical America;naturalized in western and southern Europe
Synonym: mosquito fern Carolina pond fern Azolla caroliniana
2
aquatic fern of tropical America often used in aquariums
Synonym: water sprite Ceratopteris pteridioides
3
pantropical aquatic fern
Synonym: Ceratopteris thalictroides

数据来源:WordNet