- Lemna, genus Lemna - minute aquatic herbs floating on or below the water surface of still water consisting of a leaflike frond or plant body and single root
--1 is a kind of monocot genus, liliopsid genus
--1 is a member of Lemnaceae, family Lemnaceae, duckweed family
--1 has members:common duckweed, lesser duckweed, Lemna minor; star-duckweed, Lemna trisulca