Lemnaceae

From Academic Kids

Duckweed family
Spirodela polyrrhiza and Wolffia globosa
Close up of two different duckweeds:
Spirodela polyrrhiza and Wolffia globosa.
The very tiny Wolffia plants are under 2 mm long</small>
Scientific classification
Kingdom:Plantae
Division:Magnoliophyta
Class:Liliopsida
Order:Alismatales
Family:Lemnaceae
Genera

Lemnaceae, or the Duckweed family, is a family of monocot flowering plants containing the duckweeds (also known as water lentils).

These plants are very simple, lacking a stem or leaves, but consisting of a small blade-like structure floating on or just under the water surface, with or without simple rootlets. Reproduction is mostly by budding, but occasionally a flower consisting of two stamens and a pistil (some call it an inflorescence with three unisexual flowers) is produced. The fruit is an utricle, a sac containing air and a seed designed to float. The flower of Wolffia is the smallest in the world at 0.3 mm long.

Missing image
Lemna_minor3.jpg
Common Duckweed (Lemna minor)

The family contains five genera and 38 species and believed to be descended from a plant similar to Pistia in the Family Araceae.

Duckweeds are an important food source for waterfowl and are eaten by humans in parts of Southeast Asia (as khai-nam). Some duckweeds are used in freshwater aquariums and ponds where they may spread rapidly, although in a large pond may be difficult to eradicate once established. The plants can provide nitrate removal (if cropped) and cover for fry.

Reference and external link

Template:Commons Template:Commonsda:Andemad-familien (Lemnaceae) es:Lemnaceae eo:Lemnacoj fr:Lemnace ja:ウキクサ科 lt:Plūdeniniai augalai nl:Eendenkroosfamilie pl:Rzęsa drobna zh:浮萍科

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