
1) Genus lemna 2) Liliopsid genus 3) Monocot genus
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https://www.crosswordclues.com/clue/lemna

Lemna is a genus of free-floating aquatic plants from the duckweed family. These rapidly growing plants have found uses as a model system for studies in community ecology, basic plant biology, in ecotoxicology, in production of biopharmaceuticals, and as a source of animal feeds for agriculture and aquaculture. ==Taxonomy and growth habits== The d...
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http://en.wikipedia.org/wiki/Lemna

(Duckweed, Ivy-Leaved Duckweed, Star Duckweed) These aquatic plants are found all over the world. L. minor, known as Duckweed, is a tiny plant that floats on top of the water. It produces light green leaves, which have only a single root. Duckweed spreads rapidly and if not controlled will become a nuisance. This plant is eaten by fish and waterfow...
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http://www.encyclo.co.uk/local/10004

[
n] - minute aquatic herbs floating on or below the water surface of still water consisting of a leaflike frond or plant body and single root
Found on
http://www.webdictionary.co.uk/definition.php?query=Lemna
genus Lemna noun minute aquatic herbs floating on or below the water surface of still water consisting of a leaflike frond or plant body and single root
Found on
https://www.encyclo.co.uk/local/20974
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