What is "lemna"

Lemna \Lemna\ n. A genus of minute acquatic herbs floating on or below the water surface of still water consisting of a leaflike frond or plant body and single root.

Syn: genus 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, ecotoxicology, and production of biopharmaceuticals, and as a source of animal feeds for agriculture and aquaculture. Currently, 14 species of Lemna are recognised.