noun
definition
Any of several reduced floating aquatic plants in the subfamily Lemnoideae of the family Araceae.
Examples of duckweed in a Sentence
Fruiting Duckweed (Nertera) - N. depressa is a pretty creeping and minute plant, thickly studded with tiny reddish-orange berries, and with minute round leaves which are suggestive of the Duckweed of our stagnant pools.
A Moorhen ran across the dense vegetation, including the floating duckweed, that covered 98% of the stream.
Differs from common duckweed in that each frond has many roots.
Soon met with the green duckweed that has been present round here for the past few years.
Pratia - P. angulata is a pretty plant for the rock garden, creeping over the soil like the Fruiting Duckweed; the flowers white, and like a dwarf Lobelia, numerous in autumn, giving place to violet-colored berries about the size of Peas.
The familiar duckweed which covers the surface of a pond consists of a tiny green "thalloid" shoot, one, that is, which shows no distinction of parts - stem and leaf, and a simple root growing vertically downwards into the water.