floating fern — noun 1. small free floating aquatic fern from the eastern United States to tropical America; naturalized in western and southern Europe • Syn: ↑mosquito fern, ↑Carolina pond fern, ↑Azolla caroliniana • Hypernyms: ↑aquatic fern, ↑water fern … Useful english dictionary
aquatic fern — noun ferns that grow in water • Syn: ↑water fern • Hypernyms: ↑fern • Hyponyms: ↑clover fern, ↑pepperwort, ↑pillwort, ↑Pilularia globulifera, ↑ … Useful english dictionary
mosquito fern — noun small free floating aquatic fern from the eastern United States to tropical America; naturalized in western and southern Europe • Syn: ↑floating fern, ↑Carolina pond fern, ↑Azolla caroliniana • Hypernyms: ↑aquatic fern, ↑water fern … Useful english dictionary
water fern — noun ferns that grow in water • Syn: ↑aquatic fern • Hypernyms: ↑fern • Hyponyms: ↑clover fern, ↑pepperwort, ↑pillwort, ↑Pilularia globulifera … Useful english dictionary
Azolla caroliniana — noun small free floating aquatic fern from the eastern United States to tropical America; naturalized in western and southern Europe • Syn: ↑mosquito fern, ↑floating fern, ↑Carolina pond fern • Hypernyms: ↑aquatic fern, ↑water fern • … Useful english dictionary
Azolla — noun a genus of fern sometimes placed in its own family Azollaceae • Syn: ↑genus Azolla • Hypernyms: ↑fern genus • Member Holonyms: ↑Salviniaceae, ↑family Salviniaceae • Member Meronyms: ↑ … Useful english dictionary
genus Azolla — noun a genus of fern sometimes placed in its own family Azollaceae • Syn: ↑Azolla • Hypernyms: ↑fern genus • Member Holonyms: ↑Salviniaceae, ↑family Salviniaceae • Member Meronyms: ↑ … Useful english dictionary
List of nature centers in the United States — NOTOC ListByUSStateTOC center=yes bottom left=yes washington dc=yes territories=yes seealso=yesAlabama* [http://www.biophilia.net Biophilia Nature Center] (Elberta, Alabama) * [http://www.outdooralabama.com/public lands/stateLands/WNC/ Gatra… … Wikipedia
List of dams and reservoirs in the United States — This list is incomplete; you can help by expanding it. The following is a partial list of dams and reservoirs in the United States. There are an estimated 75,000 dams in the United States, impounding 600,000 mi (970,000 km) of river or about 17%… … Wikipedia
List of reservoirs and dams in the United States — There are an estimated 75,000 dams in the United States, blocking 600,000 miles (960,000 km) of river or about 17% of rivers in the nation . [cite web|url=http://www.pcffa.org/dams.htm |title=Dams and salmon |accessdate=2008 02 11] The following… … Wikipedia