Lemna is a genus of free-floating aquatic plants referred to by the common name "duckweed". They are morphologically divergent members of the arum family Araceae.

Lemna minor, the common duckweed [2] [3] or lesser duckweed, is a species of aquatic freshwater plant in the subfamily Lemnoideae of the arum family Araceae. [4] L. minor is used as animal fodder, bioremediator, for wastewater nutrient recovery, and other applications.

The duckweeds (genus Lemna) and related genera of the duckweed family (Lemnaceae) are the smallest flowering plants known. Individual plants consist of a single, flat oval leaf (technically a modified stem) no more than ¼ of an inch long that floats on the surface of still-moving ponds, lakes, and sloughs.

Among the smallest of all flowering plants, common duckweed is a free -floating aquatic perennial that forms a floating mat of minute foliage on the water surface.

This is the only Lemna species that produces turions (overwintering buds). A detailed species description is provided in Flora North America. Additionally, Wayne Armstrong provides detailed taxonomic information for separating species in the Lemnaceae, as well as many good photos.

Duckweed are floating aquatic plants with the scientific name Lemnaceae, which are monocots (like grasses and palms) and are divided into five genera: Lemna, Spirodela, Wolffia, Landoltia, and Wolffiella.

Lemna species, also known as duckweed, grow in stagnant or slow-flowing waters in almost all the world. In most cases they get into an aquarium unnoticed, as hidden in other plants, and once there you won't get rid of them easily.

First published in Sp. Pl.: 970 (1753) The native range of this genus is Cosmopolitan.

Lemna sp is one of the most familiar aquatic plant materials in Indonesia. Lemna or often referred to as duckweed is an aquatic plant that is widely distributed in Indonesian waters. Several types of Lemna found in nature consist of: Lemna perpusilla and Lemna minor. Lemna mostly grows in calm waters and is protected from the wind.

In Lemna the connection to the mother frond is formed by a thin white stipe at the base that falls off or decays after the frond is grown (frond of L. trisulca is narrowed at base into a green stalk persisting on frond).